On Fri, 31 Aug 2007 17:01:21 -0400, Mats Ahlgren <[EMAIL PROTECTED]> wrote:
>> (What would graduated sustain even mean?)
> 
> It would mean it takes longer/shorter for the vibrations to die down.
> (This has a firm root in actual physics and real instruments: by changing
> the coefficient of the friction term, energy dissipates at a
> slower/quicker rate, thus making it take longer/shorter for the sound to
> dissipate.)

That makes sense.  Unfortunately, for MIDI, hold and sustain are simply
defined in terms of deferring note off processing:

 http://jedi.ks.uiuc.edu/~johns/links/music/midispec.htm#Hold
 http://jedi.ks.uiuc.edu/~johns/links/music/midispec.htm#Sus

As far as I know, control of simulated physical "damping" would require
the use of a vendor-specific controller.

-mental


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