Re: Lilypond's internal pitch representation and microtonal notation

[David Kastrup]

Joseph Wakeling <address@hidden> writes:

> On 09/20/2010 03:22 PM, Graham Percival wrote:
>> Hmm.  This is similar to the distinction between cis and des, correct?
>
> Yes, exactly, it's an enharmonic equivalence.
>
>>  Am I also correct in assuming that d-3/4 is not sufficient?  Also, is
>> there a frequency difference between c+1/4 and cis-1/4 ?  Or is this
>> purely a difference in graphical notation?
>
> Indeed, d-3/4 is not sufficient [1]: in arrow quarter-tone notation you
> want to be able to indicate quarter-tone raising or lowering of any of
> the 12 standard tones.

One solution would be to allow pitch modifiers to be a list of fractions
rather than just a single fraction.

Sounds rather messy.

-- 
David Kastrup