----- Original Message ----- From: Hans Aberg <hab...@math.su.se> Date: Monday, February 16, 2009 1:52 pm Subject: Re: Persian musical koron and sori To: Kees van den Doel <kvand...@shaw.ca> Cc: Behnam Rassi <beh...@videotron.qc.ca>, Graham Breed <gbr...@gmail.com>, lilypond <lilypond-user@gnu.org>
> On 16 Feb 2009, at 21:43, Kees van den Doel wrote: > > > > Might you give some examples of this (which written notes)? > > > > E.g., D Ep F (F 20 cent flat, so actually D Ep and Ep F are > the same > > interval) > > If the musical function or intent is that these intervals should > be > equal, then the note is F#pp, that is, a double koron. Cute, I never thought of that! However it does't quite work because the *approximate* 20C fat is independent of the koron (which is *approximately* 40C). So the equation '>' = "#p' is an exact constraint. Anyways the 20C flat note is not considered an accidental, not notated, inconsistently used, and irrelevant for notation. One has > (in any > tuning) F#pp - Ep = F#p - E = F> - E = n, where n is the > neutral > second that Farhat uses, the same as Ep - D, then. > On the other hand, if it is lowered an unspecified amount, then > when > transposed, you will need another symbol that raises an interval > so > that the sum is M-m. If you look at the persian.ly file I sent, you will find the symbol for that I think (a blank). Kees > Hans > > > _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
