[sdiy] Random Tone Generator redux

[Kyle Stephens]

I've been talking to Ian off list, and thus far we got:

-4024 as a suboscillator on the output; individual outs and/or summed staircase out
-The bigger divisions off the 4024 can work as CV or gates
-Spare Schmitts modulating existing Schmitts A, B, or C with Vactrols
-MFOS WSG tricks, like a transistor VCA
-Multiple, buffered taps out from within the circuit, pending they give dramatically different enough outputs
-External clock/line in (again, to Schmitts A, B, or C), not unlike this guitar FX design here:
http://www.geocities.com/tpe123/folkurban/fuzz/pwm.gif

As for a dirt simple filter, maybe a rotary switch with various cap values on the output. I reckon it'd keep feature creep down (not that it hasn't been chugging along already) to let an external filter do the work.

And by way of waveshaping, there's some interesting stuff to be had here:

http://www.geocities.com/picsynth/sawtooth.jpg

Main site: http://www.geocities.com/picsynth/


Indeed, I'm curious how the beast sounds as is too!


_Kyle

--- On Tue, 3/24/09, Colin Hinz <asfi at eol.ca> wrote:

> From: Colin Hinz <asfi at eol.ca>
> Subject: RE: [sdiy] Random Tone Generator redux
> To: "synth diy" <synth-diy at dropmix.xs4all.nl>
> Date: Tuesday, March 24, 2009, 9:26 PM
> On Mon, 23 Mar 2009, Ian Smith
> wrote:
> 
> >
> > Hi all,
> >
> > Here's a link to a schematic that I drew up for that
> pseudo-random tone
> > generator.
> >
> > http://www.sdiy.org/modius13/randtonereduxschem.pdf
> 
> Interesting! How does it sound?
> 
> > If there's anything anyone can think of to add to it
> feature-wise
> > that would make it a decent module, I'm open to
> suggestions.
> > (trigger outputs, different waveforms, multiple voices
> in one
> > package, etc.)
> 
> Output level control, with perhaps some dumb simple
> waveshaping or
> filtering?
> 
> - Colin
> 
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at dropmix.xs4all.nl
> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>