Hello Trev,
I haven't actually used it, but it looks like the outkpb opcode might
do what you want.
There's also a outkpat for poly aftertouch, and outkc (or outkc14 for
higher precision) for controller data.
best
Oeyvind

2012/5/18 William Wignall :
> Hello,
>
> I'm working on a pitch to MIDI/amplitude to velocity tracker. I'd like to
> use the output 'koct' from the opcode 'pitch' to send MIDI pitch bend data
> out of csound. Since MIDI notes are fixed, bending and vibrato are
> impossible. On violin, this really cuts out expressiveness! Could anyone
> help me get started with this?
>
> Thanks,
> Trev Wignall



-- 

Oeyvind Brandtsegg
Professor of Music Technology
NTNU
7491 Trondheim
Norway
Cell: +47 92 203 205

http://flyndresang.no/
http://www.partikkelaudio.com/
http://soundcloud.com/brandtsegg
http://soundcloud.com/t-emp

I've never tried this, but it strikes me you have a few issues to grapple
with. The koct output of pitch seems to want to lock the tracked pitch value
to scale steps. Assuming you're planning to use standard 12-note equal
temperament, you could set the ifrqs argument to 120 rather than 12, which
the opcode seems to allow. This would give the koct output a resolution of
1/10 semitone. After turning these fractional values into pitch-bend data
(somehow) and setting your receiving synth to a bend depth of 1 semitone,
you would have to detect when the pitch of the input signal has changed by a
large enough value that you need to terminate the current MIDI note, reset
the pitch-bend, and start a new MIDI note.

If 1/10 semitone is not enough resolution for your pitch-bends, you might
try inserting some sort of lag processor (lowpass filter) into the signal
path to smooth out the values before sending them as pitch-bend messages.

Don't know if this will help ... it's just off the top of my head.

--JA


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