http://megalego.free.fr/pd/scoregame/polyrytharm.pd
For adding spice I've also divided the octave by the number of notes in the polyrythm.
That's really interesting, and I love the graphical output. It's very whimsical, having the animated notes that go around in circles on the score.
I've been particulary interested by your microtonal guitar, and I'm curious if the player is able to make good sounding chords with it. Also it's possible to play microtonal scales with an usual guitar, with just tuning strings differently, for example by lowering the G string about 1/4 tone, then with the ratio between the G string and the B string, it's possible to play 24 notes scales, not in an easy way, I admit.
The guitar is not that hard to play, after all. Diatonic scales line up very well in 19-tet, but there's extra notes in between. In 12-tet you have a diatonic scale as follows: 0,2,4,5,7,9,11,12 In 19-tet, you have 0,3,6,8,11,14,17,19 so, there are notes of the chromatic scale as follows: C,C#,Db,D,D#,Eb,E,E#,F,F#,Gb,G,G#,Ab,A,A#,Bb,B,B#,C
Chords based on diatonic scale line up very well in 19-tet. I can play nearly anything on the "microtonal" 19-tet scale that I could also play in 12-tet. It's advantage is in chromatic voice variation, since there are extra notes to use, and some intervals become evenly divisible. Example, a perfect 4th is 8/19th of an octave; it's divisible by 2,4, or 8 On the other hand, 19 is a prime number, so none of the intervals evenly divide the octave any more. So, diminished/augmented chords are out, despite having more variations that all sound like dim or aug chords with small variations
At the moment, I have tuned the guitar from C to E, so that the frequency ratio between any two strings is an odd harmonic ratio.
it goes: C, A, D#, G, B#, E (as numbers: 0,14,23,30,37,44) and the ratios between strings are: 5/3 , 7/5 , 9/7 , 9/7 , 9/7
and I have no idea what to do with it. I work on it sometimes, but I don't know how it's actually useful for anything.
Chuck