[sdiy] 4 channel polyphonic midi2cv with trigger

[Scott Bernardi]

I use the capacitvely couple gate edge to generate single triggers
already.  I use a jack with a NC connection that capacitively couples to
the gate input in the absence of something plugged into the trigger
jack.
I'll look into differentiating the CV - that's an idea I hadn't thought
of before that would allow me to retrofit the EFM midi2cv to provide a
trigger. Thanks.

harrybissell wrote:

> Why trigger...
>
> you can get a trigger from the rising edge of the gate with a
> capacitor and resistor... (single trigger)
>
> or a multi trigger by differentiating the step in voltage as the
> CV changes....
>
> I built the trigger circuits right into my env. generators, and just
> use gates. I'm not personally fond of multi-trigger anyway... but
> its not hard to do (in hardware... which I AM personally fond of...)
>
> H^) harry
>
> sbernardi at attbi.com wrote:
>
> > I've got an EFM rxcvpro midi2cv, and a PAIA midi2cv. The
> > rxcvpro is nice because it is cheap, but it does not
> > have a separate trigger output. The PAIA is $99 and can
> > do two simultaneous channels with CV, gate, trigger,
> > velocity, mod wheel, and aftertouch.
> > What I would really like is something that could do 4
> > channel polyphonic with CV, gate, trigger, and velocity.
> > That's 16 outputs - should be possible with a PIC based
> > midi2cv? Does anybody know of such an animal that
> > doesn't cost $100's?
> > Lord have mercy - I'm thinking of doing a 4 voice
> > polyphonic synth.