[sdiy] What the heck is this?

[Richard Wentk]

At 16:34 19/03/2003 -0800, John L Marshall wrote:
>It has been on ebay a couple of times.
>
>It is designed for hearing research. No control voltage.
>
>Of limited musical use in my opinion
>
>I resent the implied musical/sound application by including a Buchla 100 and
>a Capabara 320 in the same photo.

Never mind the Axcel Resynth. Did that ever get beyond the prototype stage?

That aside, the idea of controllable phase offset between two oscillators 
is a very interesting one with not a few potential applications.

Naive recipe:

Take a standard sawtooth oscillator core
Add a second comparator
Add some voltage offset circuitry to the comparator input and some kind of 
monostable-ish thing to shape the output to a narrow pulse
Use that new reset pulse to control the flyback on a second switched integrator

=> Two pitch-locked ramp VCOs - one with a VC phase offset.

Can anyone see any problems with this? Has it perhaps been done already?

Richard