[sdiy] Guitar Synth boards ready...

[john mahoney]

----- Original Message ----- 
From: "harrybissell" <harrybissell at prodigy.net>
> Ahhh but...
>
> ... It is indeed 'trebley' (is that a word?)

Well, almost! I should have removed the "e":
    http://dictionary.reference.com/search?q=trebly

Harry, we've discussed it a little before, but I'd like to review your
concept of "hacking a Matrix 1000." The M1000 (and Matrix6) use the Curtis
CEM3396, a chip that can do complex waveshaping and filtering and so on. The
3396 is normally driven with square waves from DCOs.

Your intention, as I recall, is to use square waves from Muffy to drive the
3396s, right? But there was an issue that I can't recall...

Do you also need a CV that's proportional to the pitch, and thus you must
have pitch-to-voltage converters on each string to derive the CVs?

Or, was it that you need a trigger and/or gate for each string? Now that
I've written it, I seem to recall that the challenge was to produce a valid
gate. The tricky part is that a string's output trails off, but this isn't
really any different from using a noise gate on a guitar. (Oh, right -- 
noise gates often chop off the sustain, which lead to special
made-for-guitar gates.)

A guitar-driven Matrix would be very nice.
--
john