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Envelope Controlled Filter using tubes?

7/28/2000 1:34 AM
jon	Envelope Controlled Filter using tubes? Hi Reading thru the recent thread on the autowha, I was wondering if someone would be kind enough to explain how envelope controlled filters work, and if anyone knows of any tube based circuits that will do this? I've been going nuts trying to get a tube frequency divider to do the octave below thing...I can get the guitar signal translated to a sawtooth that will reliably trigger the flip-flop, but when the note decays, I get unpredictable oscillation and degradation of the signal. If I could modify the envelope before or after, might clear things up a bit. Thanx, Jon

7/28/2000 1:34 AM

jon

Envelope Controlled Filter using tubes?

Hi
Reading thru the recent thread on the autowha, I was wondering if someone would be kind enough to explain how envelope controlled filters work, and if anyone knows of any tube based circuits that will do this?

I've been going nuts trying to get a tube frequency divider to do the octave below thing...I can get the guitar signal translated to a sawtooth that will reliably trigger the flip-flop, but when the note decays, I get unpredictable oscillation and degradation of the signal. If I could modify the envelope before or after, might clear things up a bit.
Thanx,
Jon

Replies:

Don Symes Compress before the divider?... -- 7/28/2000 4:03 PM
zachary vex there's a schematic for the doctor ... -- 7/29/2000 9:16 AM
Mark Hammer I'm preparing a Technology of Auto-... -- 8/2/2000 1:46 PM