[fluid-dev] Re : no effects applied using multiple stereo channels

[CERESA Jean-Jacques ENAC/ENAC]

Hi

1) If you want to use more than 1 stereo channel output
you need to set  "audio-channels" settings to the number of output you want.
For example, to use 3 outputs (assuming your audio card has 3 outputs!)
set audio-channels to 3.

2) With this settings FluidSynth mixer dispatchs voices to the 3 outputs
depending on MIDI channel. Like this:
MIDI Channels 0,3,6,9, 12,15.. to output 0.
MIDI Channels 1,4,7,10,13,16.. to output 1.
MIDI Channels 2,5,8,11,14,17.. to output 2.

3) But, no matter the number of outputs you need, the output of effects
units (reverb & chorus) go to audio output 0 only !.
So in the above example, if you apply reverb to Instrument on MIDI channels
0,1 and 2 the result is:
- Dry sound from MIDI Channel 0 go to output 0, and reverb sound go to output 0.
- Dry sound from MIDI Channel 1 go to output 1, but reverb sound go to output 0 (not 1!).
- Dry sound from MIDI Channel 2 go to output 2, but reverb sound go to output 0.(not 2!).

jjc

 

 

Le 07/04/15, "Tom M." <address@hidden> a écrit :

hi,

i'm trying to get reverb effect applied separately for each midi
channel. however, no matter what i try, if my output has more than 1
stereo channel, no reverb effect is applied. is this
supposed to work somehow?

in my case the reverb effect is enabled / controlled via MIDI CC 91.


using FluidSynth 1.1.6 under openSUSE.


Tom

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