Re: [fluid-dev] pan by channel

[Dave Serls]

On Fri, 27 Aug 2004 12:41:47 +0200
Peter Hanappe <address@hidden> wrote:

> 
> 
> Dave Serls wrote:
> > Is there a mechanism to direct most (or all) of a given MIDI channel to
> > a given stereo channel?  or specify mix by channel, I guees.
> 
> I'm not 100% sure I understand your question. It could be:
> 
> 1) Is it possible to specify a pan and/or volume for every MIDI
>     channel? Yes, it is. You can send the standard MIDI Control Change
>     messages to change both (if you're using the fluidsynth API, you
>     can call fluid_synth_cc()).
> 
> But I don't think that is what you were asking.
> 
> It could be:
> 
> 2) Is it possible for the synth to output multiple audio channels
>     and have, for example, MIDI channel 2 write to
>     audio channel 3? The multiple audio streams can than be mixed
>     in an external mixer program. This is somewhat possible but it
>     is still adventure land. You can start the synth
>     with multi audio out, in which case MIDI channel 1 goes to
>     (stereo) audio channel 1, MIDI channel 2 to audio channel 2, etc.
>     I believe it only sort of works when you use the jack audio
>     driver.
> 
> I'm not quite sure this will help you out. Send us some more details
> if it doesn't.

  I'm sorry I haven't replied, but the exigencies of this life....

  Here's hoping that I can express what I actually want.
  I'd like to plat my midi keyboard with its builtin 'split' enabled,
  so that the left=-hand set of keys outputs a different channel (n+1)
  than the right; I would like fluidsynth to balance the higher channel (80-20)%
  to the left channel of lineout, and thelower channel (80-20)% to the right.
  I've tried 'cc x 7 nn'  and it seems to be ignored.
  From a poor inspection of the code, the range of values seems to be 
  numbers in the hundreds.  I wasn't sure how these were scaled.
  At any rate 0 seemed to turn a midi channel off at both left and right 
speakers.
  The behavior is as if all results are mixed equally (?).

  Thanks for your attention.
  

> 
> P
> 
> > Thanks for any info.
> > 
> > Dave
> > 
> > 
> > 
> 
> 
> 
> 
> 
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> 


-- 
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*   Dave Serls                                 Littleton, CO, USA      *
*   dashs.denver.co.us                         sorrybiscuit.com        *
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