In case I missed anything....

[Josh Rowe]

I usually just lurk in the background, but in this case I'm throwing
my 2 cents in, but I would also like to see any good VCA
designs ( high dynamic range/low noise ) that anyone has.

Some of the stuff I've gotten from the web, I'm skeptical of.  And I 
do have the Electronotes Builder's Guide/PCC, but those are dated and 
I'm wondering if a really good VCA can be had with and handful of op 
amps, etc.  Incidentally, I'd like to have a good VCA because I'm 
planning to build a modular that has VC of every parameter, and I'll 
need tons of VCAs for Env Depth, FM Depth, PWM Depth, etc.

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Date:          Tue, 18 Feb 97 17:16:25 PST
From:          gstopp at fibermux.com
To:            synth-diy at horus.sara.nl
Subject:       In case I missed anything....

     Hi DIY, 
     
     If anybody tried to email me anything and got no answer (like ASM-1 
     queries), please re-send. I have been off-line for several days, till 
     this afternoon (Tuesday 2/18). Sorry for the bother! Any good threads, 
     I probably missed :(
     
     Corporate LAN problems.
     
     Anyway for lack of email I have had plenty of time to goof around on 
     the test bench. Some of the stuff I want to report about include:
     
     * A pretty cool voltage-controlled waveshaper
     
     * A real nice voltage-controlled full ADSR design
     
     * Modifying PC serial ports to work at MIDI rates
     
     Also - I want to find out if anybody has a high-performance discreet 
     VCA design. I'd like to know if there is a design that uses 
     easy-to-get parts, and would be something that a modular synthesizer 
     power-user would welcome into his system. You know, wide dynamic 
     range, ultra-low noise specs, things like that. Any help there?
     
     Hope I'm still subscribed,
     
     - Gene
     gstopp at fibermux.com

Josh Rowe
jrowe at everest.acpl.lib.in.us