Re: [fluid-dev] Status of synth.audio-channels and synth.audio-groups

[Lorenzo Sutton]

On 26/04/16 17:21, Tom M. wrote:
> > Indeed that's the behaviour I expect. Do I have to specify 16? I tested
> > with lower numebrs (e.g. 4, 6)... Maybe that is the problem?
>
> Well, one midi port can always address 16 channels, and to avoid tinkering
> like "on which midi channel does instrument 5 has to play now so it will be
> heard on output 3" you better just use synth.audio-channels=16 ;)

[...]
> > > fluidsynth -o audio.jack.multi=no -o synth.audio-channels=16 -o
> > > synth.audio- groups=16  "someSoundfont.sf2"
> > >
> > > you should get 16 stereo output channels. and since there 16 midi
> > > channels,
> > > each midi channel will get its own stereo channel. or which behaviour do
> > > you experience?

Well unfortunately I tested this and that's not the expected behavior.
What that command achieves is indeed 16 stero pairs (l_00, r_00 etc.) 
but all channels are played on the first l_00 / r_00 pair plus there's 
'something' coming out of l_01 / r_01 I am guessing it's maybe the reverb..

I opened a similar thread on LAU and someone provided interesting 
answers / pointers:

http://lists.linuxaudio.org/pipermail/linux-audio-user/2016-April/104713.html

Lorenzo.