Tomgs excellent adventure

[Thomas Hudson]

I've been looking at a Thomas Henry design for an envelope
follower that uses the NE570. It rectifies the input signal
twice allowing a smaller filtering cap for better response
times. I believe this technique is also discussed in 
Electronotes. The NE570 design is in "Making Music with the
NE570 Compander" see 
http://Prairie.Lakes.com/~map/books.html#ne570

Thomas

> -----Original Message-----
> From: owner-synth-diy at mailhost.bpa.nl
> [mailto:owner-synth-diy at mailhost.bpa.nl]On Behalf Of Johan Gustavsson
> Sent: Thursday, August 27, 1998 10:48 AM
> To: synth-diy at mailhost.bpa.nl
> Subject: Tomgs excellent adventure
> 
> 
> Took a look at Toms new modules - Looks nice! Only one thing...What is
> a KLM type filter? I mean, I thought I'd mastered the synth TLAs by
> now, when out of the blue a new one appears. I'm stunned.
> 
> On another note, does anyone have a lead on an external input module
> schemo? I'd like a space with external input, mic preamp, envelope
> follower and trigger/gate generator. I've got the schematic and PCB of
> Paias 2700-series envelope follower, but I seem to remember that that
> one runs off strange voltages or something...
> /Moxie (Contemplating keyboard designs)
> 
>