The only defined controls I see for reverb and chorus are for Reverb send
and Chorus send (CC 91 and 93).  That could be used sensibly for reverb and
chorus send levels.  That still leaves Reverb room size, damping, and
width.  With chorus it leaves the number of voices, speed, depth and type.
Other CCs could of course be selected for these additional parameters, but
that wouldn't be standard and might cause confusion if someone is trying to
use the controls for something else.

Thinking about this more, I like the idea of having a Sysex interface to
the FluidSynth command shell, which would open up a whole world of
possibilities.  Seems like the MIDI standard doesn't really have a
"unregistered" manufacturer ID though for Sysex which makes things awkward
and I don't think it is worth trying to buy our own ID for $200/yr.

NRPNs could be used potentially as well for reverb and chorus parameters
and could provide a wider value range than the typical 7 bit MIDI values
that CCs usually suffer from (unless treating them as 14 bit).

Best regards,

Element

On Fri, Jul 8, 2016 at 6:38 PM, Peter Billam <p...@pjb.com.au> wrote:

> Greetings.. Element writes:
> > there are no embedded MIDI commands (to my knowledge) for setting
> > the reverb/chorus parameters (depth, frequency, etc) in a MIDI stream.
> > There aren't any MIDI standards for these things (to my knowledge),
> Similarly Jean-Jacques writes:
> > As far i remember there is no specific CC (ie: for reverb or chorus)
> > in the MIDI specifications.
>
> But see:
>   http://www.pjb.com.au/muscript/gm.html#cc
> In particular, check out controllers 91-95.  See also:
>   http://www.blitter.com/~russtopia/MIDI/~jglatt/
>   http://www.midi.org/techspecs/index.php
>   http://www.midi.org/techspecs/midimessages.php
> and various other places...
>
> Regards,  Peter Billam
>
> http://www.pjb.com.au      p...@pjb.com.au     (03) 6278 9410
> "Follow the charge, not the particle."  --  Richard Feynman
>  from The Theory of Positrons, Physical Review, 1949
>
>
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>
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