[sdiy] Looking for schematic for simple percussive envelope generator

[Dave Leith]

what about the envelope generator from a simmons drum machine - it's
just a decay control? There's a thread with schematics and pictures
electro-music.com/forum/topic-16985-150.html


On 11/7/08, mark verbos <mverbos at earthlink.net> wrote:
> oh yeah, you need the HOLD portion of the Korg MS-10 envelope and a simple
> AR envelope with zero A. Try the AR in an ARP odyssey.
>
>  Mark
>
>
>
>
>
>
>  On Nov 7, 2008, at 6:39 PM, Adam Schabtach wrote:
>
>
> > Dear Lazyweb:
> >
> > I'm seeking a schematic for a simple envelope generator with the following
> > features:
> >
> > -One control for decay. Attack is always "instantaneous".
> > -One control for hold time, which is the duration that the output stays
> > fully on before it starts to decay. This should range from zero to, oh,
> half
> > a second or so.
> > -Positive-edge triggered. I'd like to be able to trigger it with a rising
> > edge and not worry about how long the pulse I send it has to be.
> > -Small parts count (of course). I want to cram four of these into one
> > module, along with some other stuff.
> >
> > Any suggestions will be very much appreciated. Yes, I know how to use
> > Google, and yes, I've looked at various EG schematics (mostly ADSRs). I'm
> > hoping that someone will look at the above feature list and go "oh yeah,
> you
> > need ...".
> >
> > Thanks--
> > --Adam
> >
> > _______________________________________________
> > Synth-diy mailing list
> > Synth-diy at dropmix.xs4all.nl
> > http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
> >
>
>  _______________________________________________
>  Synth-diy mailing list
>  Synth-diy at dropmix.xs4all.nl
>  http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>