MPE support

[muziker]

I'd like mpe support to be built into fluidsynth. With this, it becomes possible to use individual pitch bends on every channel as opposed to only one pitch bend per fluidsynth instance. This enables the use of microtonal scales. I'd like to be able to use an orchestral library and adopt a microtonal scale over it.

[derselbst]

With this, it becomes possible to use individual pitch bends on every channel

Every MIDI channel has its own pitch bend by default.

as opposed to only one pitch bend per fluidsynth instance

This is wrong.

This enables the use of microtonal scales.

Fluidsynth already supports MTS. But this has nothing to do with MPE. MPE was invented to allow controlling notes individually in terms of CC, pitch, aftertouch, etc.

[muziker]

I was a little terse on the microtonal part. But enable the use of microtonal scales by means of midi note+pitch bending on a per channel basis, it's a use case of mine.

[derselbst]

You should not abuse the pitch bend for microtonal tuning. MTS allows you to tune single notes. This is what fluidsynth can do. You don't need MPE for this.

[muziker]

From the man page, it seems that specifying a tuning scale and storing it to a program and issuing midi program changes should work? For a given note, I'm trying to glissando to the target tuning though, which is why i'm using the pitch bending technique.

…

On Mon, Apr 26, 2021 at 4:34 AM Tom M. ***@***.***> wrote: You should not abuse the pitch bend for microtonal tuning. MTS allows you to tune single notes. This *is* what fluidsynth can do <https://www.fluidsynth.org/api/group__tuning.html#ga3a9f995c967a9a227f9603ff57ee2304>. You don't need MPE for this. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#853 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJLF4UX7YV6PETNZM6AGUCDTKR4F3ANCNFSM43EA2PKA> .

[derselbst]

From the man page, it seems that specifying a tuning scale and storing it to a program and issuing midi program changes should work?

The tuning program is not related to the midi program. And tunings must be explicitly activated. We have little about tuning, so you'll have to figure it out yourself.

I'm trying to glissando to the target tuning though, which is why i'm using the pitch bending technique.

Sounds like portamento/legato would be a better solution than pure pitch bend. See the polymono documentation for details and examples.