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Envelope Follower PCBs (Do they exist?)
MUFF WIGGLER Forum Index -> Music Tech DIY  
Author Envelope Follower PCBs (Do they exist?)
valis
I really don't want to buy a Doepfer A-119 and convert it into my format but as far as I can tell, nobody sells an envelope follower PCB. Am I correct? I know Ray Wilson sells an envelope follower with a filter but that's more of an effect than a control module.

I read in the archives about some circuits that may do the trick but it seems like this PCB should exists somewhere. Am I missing something?
tragedybysyntax
Blacet I/O.... it's what I used. Really cool because you can use the env 1 and env 2 out to shape the signal a bit. And lag on env 2 out! smile
goiks
mmm amplitude follower
https://www.muffwiggler.com/forum/viewtopic.php?t=13147
valis
Neither of these companies just sells the pcb though, right? I have to buy a kit or partially assembled board?

ooh, thanks for that link. I miss so much here somehow..
goiks
i think you are correct but it would seem preferable to buying an a-119 to take apart
valis
goiks wrote:
i think you are correct but it would seem preferable to buying an a-119 to take apart


Yeah, you're probably right about that..
tragedybysyntax
pssh.... fuck it. Take it apart! Be the first one to chop shop a a-119!

I chopped an Oakley lag and stuffed it in a sequential switch panel. Also an MFB Dual LFO into a frac ear.! smile
Hi5
full wave rectifier followed by a lowpass filter with a cutoff around 15-20hz. that is all it is. add a comparator on the output for gates.
you could stripboard this easy.
krisp14u
http://www.oakleysound.com/follower.htm
numbertalk
http://www.oakleysound.com/follower.htm

Ha, oops, Paul beat me to it. I've built the deluxe version of this (with the little lag) and it's awesome.
valis
Good info everyone. I have a few more options to consider that I didn't know about.

My DIY modular (rev. 2.0) is finally taking shape and I'm gettting super-excited..
NV
The Oakley EFG is about as good as it gets - LEDs for reference, a fast and slow CV output for the envelope follower, a solid gate extractor with a unique response control, and a high quality pre-amp. Everything you need from this type of circuit on one PCB.
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