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Re: [fluid-dev] New patch: polyphonic key pressure (aftertouch)

From: Marcus Weseloh
Subject: Re: [fluid-dev] New patch: polyphonic key pressure (aftertouch)
Date: Tue, 23 May 2017 14:59:01 +0200

2017-05-23 14:43 GMT+02:00 Kjetil Matheussen <address@hidden>:
Thanks for the explanation! It seems seems like polyphonic aftertouch
is a more advanced feature than I though, and you know a lot more
about this than me. I thought polyphonic aftertouch was just a way to
change the individual volume of single notes after they have started

It can be configured that way, but by default it does nothing is most soundfonts.
It would be very nice to have a simple option for setting the volume of individual
notes after they start playing though. But perhaps that would require a different
type of extension to fluidsynth?

If you edit the soundfont and configure a Key Pressure -> Initial Attenuation modulator for every included preset, then that will work with my patch.

If you want this kind of behavior on every possible soundfont by default, then you are basically asking for an additional (non-standard) default Key Pressure -> Initial Attenuation modulator. That would require the addition of this modulator to the list of default modulators in FluidSynth. It would be very easy to add a command-line switch or API configuration option to implement this, but I'm not sure if this kind of non-standard behaviour is acceptable or not.



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