[sdiy] Polyevolver

[Tim Parkhurst]

Hi Joseph / E.O.J.

The Poly is basically five Evolvers stuck in one case. There are a LOT more
knobs on the control surface, which is a good thing (Dave Smith does NOT
like the "a few buttons and an LCD" style of interface, but he was stuck on
the Evo Rack because he didn't want to make it bigger than 1U), but the
internal sound path / architecture is identical to the original Evolver. It
basically uses a PIC micro for control, two specialized Curtis chips for the
analog VCOs, VCFs and VCAs, and an Analog Devices DSP for everything else
(digital oscillators, high pass filter, distortion, delay). Here's a link to
a signal flow chart that pretty much spells it out.

http://www.davesmithinstruments.com/downloads/signal_flow.pdf


Tim (much bigger than 1U) Servo

"Imagination is more important than knowledge." - Albert Einstein




> -----Original Message-----
> From: Joseph Palermo [mailto:fatjoebear at tmail.com]
> Sent: Tuesday, April 19, 2005 9:36 PM
> To: Synth diy list
> Subject: [sdiy] Polyevolver
> 
> Anyone have one of these or spend anytime with it. Seems to have nice
> specs and the price isn't bad, there cheaper then a lot of p5s I see on
> ebay. Anyone know what the analog section is
> 
> Oh yeah,
> All you guys kick ass, I learn more from reading your posts and pages
> then I do from my teachers at school. Thank you much
> E.O.J the Bum
> 
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