On Tue, Jul 21, 2020 at 4:24 AM Hans Åberg <[email protected]> wrote: > > > > On 21 Jul 2020, at 05:08, Freeman Gilmore <[email protected]> wrote: > > > > This is where I got ly:pitch-alteration. from, but I do not know how > > to use it: > > http://x31eq.com/lilypond/ > > This is Graham Breed, you might check out some of his posts here on the > LilyPond lists. > > > The Pitch Model > > > > Pitches in Lilypond are a combination of the position on the staff, > > and the alteration relative to the nominal at that position, as a > > rational fraction of a 200 cent whole tone. Pitch names repeat every > > 1200 cent octave. You can create a pitch with ly:make-pitch and find > > out about an existing pitch with ly:pitch-octave, ly:pitch-notename, > > and ly:pitch-alteration. There's also > > ly:pitch-steps, which is a combination of ly:pitch-octave and > > ly:pitch-notename, and ly:pitch-semitones which can be risky in a > > microtonal context. > > It is very complicated to use. You might try the regular.ly file which allows > for ETs in the MIDI output. I can send you some examples for some of them, > like E53. Graham has made a file that allows for more complicated > microtonality, by using a high ET so that the microtones do not clash. > It looks like I misunderstand what ly:pitch-alteration.is used for. I was thinking it could use it To check on what is going on in a program or check or follow what you have written. Graham did not say that though. Just a thought, do not put any more time on this.
Thank you, ƒg
