On 29 Jul 2014, at 21:16, Graham Breed <gbr...@gmail.com> wrote: > I didn't use a music font because it was too much trouble to create a music > font with Sagittal. Also, it's possible to use strings for chained > accidentals with a text font. This would be important for Extended Helmholtz > if anybody wired it up.
Some info about the Extended Helmholtz microtonal accidentals [1] that Graham mentions: It might be nice to have some of the 5-limit intervals in [1]. The 5-limit is the most important one, as this is what a Western orchestra typically adapts towards. In a LilyPond implementation, one can choose E53 (53 equal temperament) as an approximation of Pythagorean tuning, and then approximate the syntonic comma 81/80, about 21.506 cents, with one E53 tonestep, also called a comma. The approximation is so good that the difference barely can be heard in simultaneous sounding notes. The interval of a sharp or flat in E53 is 5 commas, so it makes it possible to have the single- and double-arrows in [1] implemented in E53. The other ones would end up in E53 enharmonic equivalence. FYI, E53 is also used in the description of Turkish music, and might be suitable for Persian (with koron and sori glyphs added), and in Arabian music. Currently, the files for these use something else: ETs that are multiples of 12, due to limitations in past versions of LilyPond. 1. http://www.newmusicbox.org/assets/72/HelmholtzEllisLegend.pdf _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
