Re: [fluid-dev] Sostenuto CC 66

[josh]

Quoting "S. Christian Collins" <address@hidden>:

> I noticed that the Sostenuto pedal (CC 66) doesn't seem to be
> implemented in FluidSynth, unless I'm missing something.  I think this
> feature should definitely be implemented at some point.  Do you all
> agree?
>
> -~Chris

Hello Chris,

Indeed the SoundFont specification lists Sostenuto on the list of  
controllers which are expected to behave as defined by the MIDI  
standard and it doesn't appear to be implemented currently with  
FluidSynth.  The Soft Pedal Switch is also on that list and not  
implemented.

For reference (wasn't really familiar with this myself):

The Sostenuto pedal switch affects only active voices when it is  
pressed, which sustain until it is released.  The Sustain switch does  
not affect these voices and additional note events are not affected by  
the Sostenuto.

The soft pedal switch is supposed to make the affected instrument  
softer via initial attenuation and filter cutoff parameters in a  
"pre-defined manner", whatever that means.

One thing I noticed in the spec, which I was not aware of before, is  
that these controllers are not supposed to be usable as modulator  
sources.


I think these should definitely be implemented.  I've added a ticket for each:
http://fluidsynth.resonance.org/trac/ticket/47
http://fluidsynth.resonance.org/trac/ticket/48

Sostenuto is perhaps a little more complex to implement since all  
voices need to be looped over and those which are active tagged as  
Sostenuto.  Should probably wait until mutex issues are cleared up.   
In fact, I think that is the highest priority for the moment.

Thanks for pointing this out.  Cheers!

Josh