Re: [fluid-dev] fluidsynth with jack: one channel per MIDI instrument

[Pedro Lopez-Cabanillas]

On Wednesday, June 17, 2009, laurent schwartz wrote:
> Can we define or set one jack audio channel output per MIDI instrument used
> ?

Yes. But I advice you to use QSynth [1] to do this, it has a checkbox 
labelled "Multiple Jack Outputs" in the audio tab allowing you to enable this 
feature. The settings "audio channels" and "audio groups" are used to map the  
MIDI channels into jack outputs.

If you want to do this with the FluidSynth command line interface, then you 
would need some options at startup, for instance:

$ fluidsynth -a jack -r 48000 -o audio.jack.multi=yes \ 
             -o synth.audio-channels=16 \ 
             -o synth.audio-groups=16 \          
             SoundFont.sf2

The above sample should map every MIDI channel into a different jack output, 
but I warn you that it didn't work for me, so it can be broken or needs some 
other option that I can't remember.

[1] http://qsynth.sourceforge.net

Regards,
Pedro