Difference between revisions of "Humdrum homework"
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Revision as of 18:33, 7 March 2019
Contents
Music 253 Humdrum Homework
Examine the melodic and harmonic properties of the Bach chorale data set. Refer to Humdrum Lab 1 for how to download the chorales (and install the tools useful for the homework).
Melodic intervals
Here is a template for extracting the melodic intervals for the tenor part in the chorales and plotting them in a histogram by percentages:
extractx -s 2 *.krn | mint | grep -v r | ridx -H | grep -v [[] | \
sortcount -vp --sort interval -T "Tenor melodic intervals" > melodic-tenor.html
This plot should be displayed when opening up the generated HTML file:
Also make plots for bass (spine 1), alto (spine 3), and soprano (spine 4) and visually compare the plots to each other.
Questions:
1. Which part has the most repetitions (P1 interval)?
2. Which part has the most leaps (intervals greater than 2 or less than -2)?
Scale Degrees
Harmonic intervals
Here is an example of how to extract the harmonic intervals between the soprano and bass parts:
extractx -s 1,4 *.krn | hint | ridx -H | grep -v [r-] | sortcount -pv -T "Harmonic intervals between Soprano and Bass" --sort interval > analysis.html
This plot should be displayed when opening up the generated HTML file:
Make plots comparing each pair of parts bass (spine 1), tenor (spine 2), alto (spine 3), and soprano (spine 4), which is a total of 6 plots.
Questions:
3. What is the most common harmonic interval between each part pair?