> On 24 Nov 2019, at 00:58, kupirijo <[email protected]> wrote: > > I think I found it here > https://lists.gnu.org/archive/html/lilypond-devel/2018-10/msg00129.html
Adam has worked quite a but on it since then, so get the latest. > Yes it seems to have both AEU notation and some other notation that is new > (it cannot be HE as HE is for just notation) I will try it out anyway. It is Helmoltz-Ellis, because in E53 they are the same, and in addition AEU is not transposable, so it makes sense to use when transposing, which was one motivation, but others, such as it is easy to read. The interval difference is small, and may only be significant in harmony, simultaneous pitches, in which case it is Just Intonation one should use anyway. > By the way, what is a generator? One has a finite set of pitches and add transposition to that, then it is what is called in mathematics a finitely generated torsion free Abelian group, and such is a product of number of copies of the set of integers, and the number of those opcies is the rank. > Is it related to meantone temperament? An extended meantone temperament has two generators, which traditionally is the octave and the the fufth, but one can change basis and take any two, such as the minor and major second. LilyPond uses the sharp and the major second. Two generators is necessary for correct typesetting of the staff system. In Turkish, Arabic, and Persian music, one would need three generators each, but LilyPond cannot handle that. > Also in the new turkish_makam.ly, why is the Holdrian comma 1/10 of a whole > 12-TET tone i.e. 200/10 = 20 cents? The HC is approx. 22.64 cents (i.e. very > close to a 1/9 of a 12-TET whole tone) Adam will have to come along and say exactly what he has done. But if one does not want to use the file regular.ly as it is not in the current LilyPond distribution, then E72 or E60 are alternatives one can use.
