Re: Microtonal midi output

[Graham Breed]

On 08/05/2021, Hans Åberg <haberg-1@telia.com> wrote:
>
>> On 8 May 2021, at 22:18, brahim.pro <brahim.pro@protonmail.com> wrote:
>>
>> Thanks for the reply. For example, I would like to play A minor scale with
>> normal A(440Hz). But I would like the interval A, B to be 203 cents
>> instead of 200. Or I would like the interval A, C to be 315 cents instead
>> of 300 cents.
>>
>> If I understand your answer correctly the note is tied to the midi value.
>> But I would like for that midi value generate a slightly different
>> frequency. Is that possible?
>
> You can't do it like that. The MIDI value is tied to the note values, the
> other way around. And you can't adjust the tuning frequency, it is C4 not
> A4. One can do fine tunings by going up in ET, Graham Breed is doing that,
> but I do not keep track of that.

No, you can do fine tuning.  LilyPond will do it with pitch bends by
default.  I have scripts to turn the pitch bends into MIDI Tuning
Standard messages, which are much more solid.  Details at
http://x31eq.com/lilypond

Some things break with newer versions of LilyPond.


                          Graham