Difference between revisions of "Humdrum lab 8"

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# Parallel 5ths between two voices when moving to different pitch classes.
 
# Parallel 5ths between two voices when moving to different pitch classes.
 
# Parallel Octaves between two voices when moving to different pitch classes.
 
# Parallel Octaves between two voices when moving to different pitch classes.
# Contrary parallel 5ths -- when two voices move in parallel 5ths displaced by an octave.
+
# Contrary parallel 5ths -- when two voices move in parallel 5ths displaced by an octave. (such as an octave and a fifth going to a fifth)
 
# Unequal 5ths -- when the bass part and another voice move from dim 5ths to perfect 5ths or vice versa.
 
# Unequal 5ths -- when the bass part and another voice move from dim 5ths to perfect 5ths or vice versa.
 
# Hidden 5ths -- when the soprano moves in similar motion with another voice and the soprano leaps to a perfect 5th with that voice.
 
# Hidden 5ths -- when the soprano moves in similar motion with another voice and the soprano leaps to a perfect 5th with that voice.

Revision as of 18:24, 15 May 2018


1 chorck

Chorck is a Humdrum Extras tool for checking the part-writing syntax of chorales. documentation for the chork tool

Eight syntax rules are checked by the program, as defined in the music-theory textbook: . Tonal Harmony with an Introduction to Twentieth-Century Music by Stefan Kostka and Dorthy Payne:

  1. Parallel 5ths between two voices when moving to different pitch classes.
  2. Parallel Octaves between two voices when moving to different pitch classes.
  3. Contrary parallel 5ths -- when two voices move in parallel 5ths displaced by an octave. (such as an octave and a fifth going to a fifth)
  4. Unequal 5ths -- when the bass part and another voice move from dim 5ths to perfect 5ths or vice versa.
  5. Hidden 5ths -- when the soprano moves in similar motion with another voice and the soprano leaps to a perfect 5th with that voice.
  6. Hidden 8va -- when the soprano moves in similar motion with another voice and the soprano leaps to a perfect octave with that voice.
  7. Voice crossing -- when an inner voice goes above the soprano voice or below the bass voice.
  8. Open spacing -- when the interval between successive voices other than the bass exceeds an octave.

2 cint

cint is a tool that extract counterpoint modules from polyphonic music.


2.1 parallel thirds

The three-interval counterpoint module for stepwise rising parallel thirds is "3 2 3". this can be done as a filter in VHV:

  !!!filter: cint -O --search "3 2 3"

The -O option collapses intervals greater than an octave to less than an octave, such as 10th (an octave plus a 3rd) being transposed to 3rds.

Risingthirds.png