Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Warning: Cannot modify header information - headers already sent by (output started at /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php:2581) in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/Feed/ChannelFeed.php on line 104

Warning: Cannot modify header information - headers already sent by (output started at /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php:2581) in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/Feed/ChannelFeed.php on line 109

Warning: Cannot modify header information - headers already sent by (output started at /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php:2581) in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/Request/WebResponse.php on line 80

Warning: Cannot modify header information - headers already sent by (output started at /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php:2581) in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/Request/WebResponse.php on line 80

Warning: Cannot modify header information - headers already sent by (output started at /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php:2581) in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/Request/WebResponse.php on line 80
https://wiki.ccarh.org/index.php?action=history&feed=atom&title=Base_40 Base 40 - Revision history 2026-08-06T00:05:01Z Revision history for this page on the wiki MediaWiki 1.43.0
Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

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https://wiki.ccarh.org/index.php?title=Base_40&diff=8872&oldid=prev Craig: /* References */ 2019-12-24T23:54:45Z <p><span class="autocomment">References</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:54, 24 December 2019</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l237">Line 237:</td> <td colspan="2" class="diff-lineno">Line 237:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/notearray/#base40</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/notearray/#base40</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/transpose</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/transpose</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* A generalized version of base-40 is implemented in C++ for the [http://www.verovio.org verovio] Transposer class: [https://github.com/rism-ch/verovio/blob/develop-transpose/src/transposition.cpp transpose.cpp], [https://github.com/rism-ch/verovio/blob/develop-transpose/include/vrv/transposition.h transpose.h].</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=Exercises=</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=Exercises=</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[image:base40exercise.svg|700px|center]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[image:base40exercise.svg|700px|center]]</div></td></tr> </table> Craig
Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627
https://wiki.ccarh.org/index.php?title=Base_40&diff=8871&oldid=prev Craig at 23:51, 24 December 2019 2019-12-24T23:51:17Z <p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:51, 24 December 2019</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l2">Line 2:</td> <td colspan="2" class="diff-lineno">Line 2:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The base-40 system <del style="font-weight: bold; text-decoration: none;">is a method for encoding </del>pitches as integers <del style="font-weight: bold; text-decoration: none;">in such </del>a <del style="font-weight: bold; text-decoration: none;">way </del>that <del style="font-weight: bold; text-decoration: none;">the diatonic interval with chromatic alteration is represented </del>as the difference between any two <del style="font-weight: bold; text-decoration: none;">numbers in the system</del>.  It can be used to encoding diatonic pitches names with chromatic alterations up to double sharps or flats.  The base-40 pitch space can be built up from the property that a minor second is a difference of 5 between two pitch numbers, and major seconds are a difference of 6.  The C chroma value is set to the value 2 rather than 0 so that the octave values for C&amp;#x266d; and C&amp;#x266d;&amp;#x266d; remain in the same octave as C&amp;#x266e; just above these pitches when using division by the base to extract the octave number.  Here is a complete table of the base-40 chroma, <del style="font-weight: bold; text-decoration: none;">using </del>C<del style="font-weight: bold; text-decoration: none;">=</del>2 <del style="font-weight: bold; text-decoration: none;">as the reference</del>:</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The base-40 system <ins style="font-weight: bold; text-decoration: none;">represents </ins>pitches as integers<ins style="font-weight: bold; text-decoration: none;">, and it is </ins>a <ins style="font-weight: bold; text-decoration: none;">method of representing pitch </ins>that <ins style="font-weight: bold; text-decoration: none;">allows intervals to be calculated </ins>as the difference between any two <ins style="font-weight: bold; text-decoration: none;">pitch integers</ins>.  It can be used to encoding diatonic pitches names with chromatic alterations up to double sharps or flats.  <ins style="font-weight: bold; text-decoration: none;">In particular, this allows a simple algorithm to transpose music by adding a transposition interval to the starting pitches to calculate the transposed pitch.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The base-40 pitch space can be built up from the property that a minor second is a difference of 5 between two pitch numbers, and major seconds are a difference of 6.  The C chroma value is set to the value 2 rather than 0 so that the octave values for C&amp;#x266d; and C&amp;#x266d;&amp;#x266d; remain in the same octave as C&amp;#x266e; just above these pitches when using division by the base to extract the octave number.  Here is a complete table of the base-40 chroma, <ins style="font-weight: bold; text-decoration: none;">placing </ins>C <ins style="font-weight: bold; text-decoration: none;">pitch classes at position </ins>2:</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> </table> Craig
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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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https://wiki.ccarh.org/index.php?title=Base_40&diff=8870&oldid=prev Craig: /* Transposition */ 2019-12-24T23:41:21Z <p><span class="autocomment">Transposition</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:41, 24 December 2019</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l215">Line 215:</td> <td colspan="2" class="diff-lineno">Line 215:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>= Transposition =</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>= Transposition =</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Transposition of notes within the base-40 system is simple: just add a constant interval to the base-40 pitch numbers.  Below is an example <del style="font-weight: bold; text-decoration: none;">which transpose </del>the music up a major second.  In the base-40 system, a major second is represented by the integer 6, so add 6 to all of the pitch numbers in the original music to transpose them up a major second.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Transposition of notes within the base-40 system is simple: just add a constant interval to the base-40 pitch numbers.  Below is an example <ins style="font-weight: bold; text-decoration: none;">that transposes </ins>the music up a major second.  In the base-40 system, a major second is represented by the integer 6, so add 6 to all of the pitch numbers in the original music to transpose them up a major second.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[image:transpose.svg|700px|center]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[image:transpose.svg|700px|center]]</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">= Generalization =</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">There are other higher-order bases that can be used to handle accidentals beyond double sharps and flats.  Here is the equation to calculate the base according to the maximum number of sharp/flats on a note:</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">    base = 7 * (2 * max + 1) + 5</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">For example, when max=2, then base=40.  When max=3, then base=54.  Another convent base is when max=42 and base=600.</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>= References =</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>= References =</div></td></tr> </table> Craig
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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2627

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581
https://wiki.ccarh.org/index.php?title=Base_40&diff=4441&oldid=prev Craig: Error report by DR 2014-02-24T03:19:13Z <p>Error report by DR</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 03:19, 24 February 2014</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l179">Line 179:</td> <td colspan="2" class="diff-lineno">Line 179:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;26&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;dd6&lt;/i&gt;]&lt;/td&gt;&lt;/tr&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;26&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;dd6&lt;/i&gt;]&lt;/td&gt;&lt;/tr&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;27&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d6&lt;/td&gt;&lt;/tr&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;27&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d6&lt;/td&gt;&lt;/tr&gt;</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;<del style="font-weight: bold; text-decoration: none;">38</del>&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;m6&lt;/td&gt;&lt;/tr&gt;</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;<ins style="font-weight: bold; text-decoration: none;">28</ins>&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;m6&lt;/td&gt;&lt;/tr&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;29&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;M6&lt;/td&gt;&lt;/tr&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;29&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;M6&lt;/td&gt;&lt;/tr&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;30&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A6&lt;/td&gt;&lt;/tr&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     &lt;tr&gt;&lt;td align=right&gt;30&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A6&lt;/td&gt;&lt;/tr&gt;</div></td></tr> </table> Craig
Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/MessageCache.php on line 198

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

Warning: unexpected NAN value was coerced to string in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 3151

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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581
https://wiki.ccarh.org/index.php?title=Base_40&diff=3862&oldid=prev Craig at 02:04, 28 February 2013 2013-02-28T02:04:23Z <p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 02:04, 28 February 2013</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l92">Line 92:</td> <td colspan="2" class="diff-lineno">Line 92:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/table&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/table&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/center&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/center&gt;</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The "base-40" name for the system refers to the property that an octave is represented by the integer 40.  C4 is 162 while C5 is 162+40=202.  To extract the octave number from a pitch value, just divide by 40.  To extract the chroma from the pitch value, subtract the octave times 40.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">      octave = value / 40</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">      chroma = value - octave * 40</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>To calculate an absolute pitch such as G4 (The G above middle C), multiply the octave  by 40 and add the chroma value for the G pitch-class:  </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>To calculate an absolute pitch such as G4 (The G above middle C), multiply the octave  by 40 and add the chroma value for the G pitch-class:  </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">        pitch = octave * 40 + chroma</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  G4 = 4 * 40 + 25 = 160 + 25 = 185</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>  G4 = 4 * 40 + 25 = 160 + 25 = 185</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Alternatively, G4 can be calculated by adding 3 half-steps (major seconds) and one minor second to C4 (represented as the number 162 in base-40):</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Alternatively, G4 can be calculated by adding 3 half-steps (major seconds) and one minor second to C4 (represented as the number 162 in base-40):</div></td></tr> </table> Craig
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https://wiki.ccarh.org/index.php?title=Base_40&diff=3861&oldid=prev Craig at 01:59, 28 February 2013 2013-02-28T01:59:44Z <p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 01:59, 28 February 2013</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The base-40 system is a method <del style="font-weight: bold; text-decoration: none;">to encoded </del>pitches as integers in such a way that the diatonic interval with chromatic alteration is represented as the difference between any two numbers in the system.  It <del style="font-weight: bold; text-decoration: none;">is a method of </del>encoding diatonic pitches with <del style="font-weight: bold; text-decoration: none;">accidentals </del>up to double sharps or flats.  The base-40 <del style="font-weight: bold; text-decoration: none;">chroma for pitches </del>can be built up from the property that a minor second is a difference of 5 between pitch numbers <del style="font-weight: bold; text-decoration: none;">in the base-40 system</del>, and major seconds are a difference of 6.  The C chroma value is set to the value 2 rather than 0 so that the octave values for C&amp;#x266d; and C&amp;#x266d;&amp;#x266d; remain in the same octave as C&amp;#x266e; just above these pitches when using division by the base to extract the octave number.  Here is a complete table of the base-40 chroma, using C=2 as the reference:</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">__TOC__</ins></div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> </del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The base-40 system is a method <ins style="font-weight: bold; text-decoration: none;">for encoding </ins>pitches as integers in such a way that the diatonic interval with chromatic alteration is represented as the difference between any two numbers in the system.  It <ins style="font-weight: bold; text-decoration: none;">can be used to </ins>encoding diatonic pitches <ins style="font-weight: bold; text-decoration: none;">names </ins>with <ins style="font-weight: bold; text-decoration: none;">chromatic alterations </ins>up to double sharps or flats.  The base-40 <ins style="font-weight: bold; text-decoration: none;">pitch space </ins>can be built up from the property that a minor second is a difference of 5 between <ins style="font-weight: bold; text-decoration: none;">two </ins>pitch numbers, and major seconds are a difference of 6.  The C chroma value is set to the value 2 rather than 0 so that the octave values for C&amp;#x266d; and C&amp;#x266d;&amp;#x266d; remain in the same octave as C&amp;#x266e; just above these pitches when using division by the base to extract the octave number.  Here is a complete table of the base-40 chroma, using C=2 as the reference:</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;center&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;center&gt;</div></td></tr> <tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l99">Line 99:</td> <td colspan="2" class="diff-lineno">Line 102:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=Intervals=</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>=Intervals=</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"> </del>A useful property of the base-40 system is that the difference between pitch numbers in the base-40 system represent one-to-one mappings with diatonic intervals with chromatic alterations:</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A useful property of the base-40 system is that the difference between pitch numbers in the base-40 system represent one-to-one mappings with diatonic intervals with chromatic alterations:</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   </div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;center&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;center&gt;</div></td></tr> <tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l217">Line 217:</td> <td colspan="2" class="diff-lineno">Line 220:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/notearray/#base40</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/notearray/#base40</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/transpose</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* http://extra.humdrum.org/man/transpose</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">=Exercises=</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[image:base40exercise.svg|700px|center]]</ins></div></td></tr> </table> Craig
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Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

Deprecated: ord(): Providing a string that is not one byte long is deprecated. Use ord($str[0]) instead in /disk/data1/ccarh-project/ccarhwiki-v1.43.0/mediawiki-1.43.0/includes/language/Language.php on line 2581

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https://wiki.ccarh.org/index.php?title=Base_40&diff=3859&oldid=prev Craig: Created page with "The base-40 system is a method to encoded pitches as integers in such a way that the diatonic interval with chromatic alteration is represented as the difference between any t..." 2013-02-28T01:47:41Z <p>Created page with &quot;The base-40 system is a method to encoded pitches as integers in such a way that the diatonic interval with chromatic alteration is represented as the difference between any t...&quot;</p> <p><b>New page</b></p><div>The base-40 system is a method to encoded pitches as integers in such a way that the diatonic interval with chromatic alteration is represented as the difference between any two numbers in the system. It is a method of encoding diatonic pitches with accidentals up to double sharps or flats. The base-40 chroma for pitches can be built up from the property that a minor second is a difference of 5 between pitch numbers in the base-40 system, and major seconds are a difference of 6. The C chroma value is set to the value 2 rather than 0 so that the octave values for C&amp;#x266d; and C&amp;#x266d;&amp;#x266d; remain in the same octave as C&amp;#x266e; just above these pitches when using division by the base to extract the octave number. Here is a complete table of the base-40 chroma, using C=2 as the reference:<br /> <br /> <br /> &lt;center&gt;<br /> &lt;table cellspacing=10 cellpadding=6&gt;<br /> &lt;tr&gt;&lt;td colspan=7&gt;&lt;center&gt;&lt;b&gt;Base-40 chroma values (pitch classes)&lt;/b&gt;&lt;/center&gt;&lt;/td&gt;&lt;/tr&gt;<br /> <br /> &lt;tr valign=top&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;0&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;C&amp;#x266d;&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;1&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;C&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;2&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;C&amp;#x266e;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;3&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;C&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;4&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;C&amp;#x266f;&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;5&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;D&lt;/i&gt;&amp;#x266d;&amp;#x266d;&amp;#x266d;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;6&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;D&amp;#x266d;&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;7&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;D&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;8&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;D&amp;#x266e;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;9&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;D&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;10&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;D&amp;#x266f;&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;11&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;E&lt;/i&gt;&amp;#x266d;&amp;#x266d;&amp;#x266d;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;12&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;E&amp;#x266d;&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;13&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;E&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;14&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;E&amp;#x266e;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;15&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;E&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;16&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;E&amp;#x266f;&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;17&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;F&amp;#x266d;&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;18&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;F&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;19&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;F&amp;#x266e;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;20&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;F&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;21&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;F&amp;#x266f;&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;22&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;&lt;i&gt;unused&lt;/i&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;23&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;G&amp;#x266d;&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;24&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;G&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;25&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;G&amp;#x266e;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;26&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;G&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;27&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;G&amp;#x266f;&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;28&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;A&lt;/i&gt;&amp;#x266d;&amp;#x266d;&amp;#x266d;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;29&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A&amp;#x266d;&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;30&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;31&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A&amp;#x266e;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;32&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;33&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A&amp;#x266f;&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;34&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;B&lt;/i&gt;&amp;#x266d;&amp;#x266d;&amp;#x266d;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;35&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;B&amp;#x266d;&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;36&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;B&amp;#x266d;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;37&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;B&amp;#x266e;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;38&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;B&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;39&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;B&amp;#x266f;&amp;#x266f;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/center&gt;<br /> <br /> To calculate an absolute pitch such as G4 (The G above middle C), multiply the octave by 40 and add the chroma value for the G pitch-class: <br /> G4 = 4 * 40 + 25 = 160 + 25 = 185<br /> Alternatively, G4 can be calculated by adding 3 half-steps (major seconds) and one minor second to C4 (represented as the number 162 in base-40):<br /> G4 = C4 + 3 * M2 + m2 = 162 + 3 * 6 + 5 = 162 + 23 = 185<br /> <br /> Note that base-40 pitch representations preserve chromatic alterations of diatonic pitch-classes (up to double sharps/flats). Therefore F&amp;#x266f;4 (180) is not in the same as the base-40 pitch G&amp;#x266d;4 (184). <br /> <br /> =Intervals=<br /> <br /> A useful property of the base-40 system is that the difference between pitch numbers in the base-40 system represent one-to-one mappings with diatonic intervals with chromatic alterations:<br /> <br /> &lt;center&gt;<br /> &lt;table cellpadding=6 cellspacing=10&gt;<br /> &lt;tr&gt;&lt;td colspan=7&gt;&lt;center&gt;&lt;b&gt;Base-40 interval classes&lt;/b&gt; (d=diminished, m=minor, M=major, P=perfect, A=augmented)&lt;/center&gt;&lt;/td&gt;&lt;/tr&gt;<br /> <br /> &lt;tr valign=top&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;-2&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;dd1&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;-1&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d1&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;0&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;P1&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;1&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A1&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;2&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;AA1&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;3&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;dd2&lt;/i&gt;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;4&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d2&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;5&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;m2&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;6&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;M2&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;7&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A2&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;8&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;AA2&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;9&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;dd3&lt;/i&gt;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;10&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d3&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;11&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;m3&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;12&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;M3&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;13&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A3&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;14&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;AA3&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;15&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;dd4&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;16&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d4&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;17&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;P4&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;18&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A4&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;19&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;AA4&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;20&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;&lt;i&gt;unused&lt;/i&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;21&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;dd5&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;22&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d5&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;23&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;P5&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;24&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A5&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;25&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;AA5&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;26&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;dd6&lt;/i&gt;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;27&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d6&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;38&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;m6&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;29&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;M6&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;30&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A6&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;31&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;AA6&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;&lt;/td&gt;&lt;td width=5&gt;&lt;/td&gt;&lt;td&gt;&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;td&gt;<br /> &lt;table&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;32&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;[&lt;i&gt;dd7&lt;/i&gt;]&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;33&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;d7&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;34&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;m7&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;35&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;M7&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;36&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;A7&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;37&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;AA7&lt;/td&gt;&lt;/tr&gt;<br /> &lt;tr&gt;&lt;td align=right&gt;(40&lt;/td&gt;&lt;td width=5&gt;=&lt;/td&gt;&lt;td&gt;&lt;i&gt;octave&lt;/i&gt;)&lt;/td&gt;&lt;/tr&gt;<br /> &lt;/table&gt;<br /> &lt;/td&gt;<br /> <br /> &lt;/tr&gt;<br /> <br /> &lt;/table&gt;<br /> &lt;/center&gt;<br /> <br /> &lt;p&gt; <br /> As an example, consider the interval between E4 (174) and C4 (162) which is 174-162 = 12, representing a major third according to the table<br /> shown above. All intervals can be constructed by observing that major seconds are 6 and minor seconds are 5, so note that a major third, consisting<br /> of two major seconds, is 6&amp;nbsp;+&amp;nbsp;6&amp;nbsp;=&amp;nbsp;12. Below is an example segment of music with the pitches labeled in<br /> the base-40 system. Try subtracting values and comparing the results to numbers in the base-40 interval-class table above.<br /> <br /> <br /> [[image:intervals.svg|700px|center]]<br /> <br /> = Transposition =<br /> <br /> Transposition of notes within the base-40 system is simple: just add a constant interval to the base-40 pitch numbers. Below is an example which transpose the music up a major second. In the base-40 system, a major second is represented by the integer 6, so add 6 to all of the pitch numbers in the original music to transpose them up a major second.<br /> <br /> [[image:transpose.svg|700px|center]]<br /> <br /> <br /> = References =<br /> <br /> * [http://www.ccarh.org/publications/reprints/base40 A Base-40 Number-line Representation of Musical Pitch Notation], Walter Hewlet, &lt;i&gt;Musikometrika&lt;/i&gt; 4 (1992), 1-14.<br /> * http://extra.humdrum.org/man/notearray/#base40<br /> * http://extra.humdrum.org/man/transpose</div> Craig