Hi,

I'd have though this was a common situation and there'd be
a good solution, but a look around didn't show anything.
After a lot of trial and error, I got a solution that seems to work,
but am I missing something obvious?

When you play a real instrument, or a normal synth, repeating
a note with the sustain pedal held down just replaces the original
sounding instance with the new one.  Csound is different, though,
in that each MIDI Note On starts a new instance, and if the sustain
is on, it remains sounding until the pedal is released.

With my sometimes-heavy pedal (:-/), this quickly takes me into
out-of-range territory, with typically nasty results.  I would think
there should be a way of ensuring a given note number only
has a single instance, but I couldn't find one.

I eventually hacked a scheme that uses a 128-slot table to
record sounding notes, and any instrument initialization that
finds the same note sounding kills itself.  It seems to work,
but is not at all elegant!

Also I was not helped by the fact that the behaviour of 'tablew'
has changed (at some point before 6.12) and *it does not match
the manual*!!  The manual (even the latest) clearly states that
tablew *always* only runs at performance time, even with i-time
parameters.  this was true in Csound 5 where I originally created
a working scheme, but it s *not* so in 6.12!  Experimentally, using
i-parameters only, tablew writes at i-time (only)!

In addition, I'm not sure that 'turnoff' is doing what I expected.
I found I have to explicitly skip the performance code once the
instrument is 'turned off', or the release phase seems to happen
anyway -- when the sustain is released.

	-- Pete --

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