[sdiy] clickless muting

David G Dixon dixon at mail.ubc.ca
Mon Oct 29 20:12:34 CET 2012

> If you're working at those sorts of signal levels you really 
> need to think about your test equipment.

Well, I don't usually.  I was just curious about the attenuation.  It's
amazing how a sawtooth wave through a triggered resonant filter really cuts
through the noise, even at uV levels!  It really accentuates the need for
good muting.

> Sounds like you have a solution.

Yes, I think so, and it will only require about 25 cents in additional
parts.  The best part of this discussion for me was being reminded that I
have a copy of Douglas Self's book and that it includes an entire chapter on
muting.  It was a very enlightening read, and I think I've got the basic
principles well and truly digested now.  It will be very interesting to see
how much better of a "gate" the 2164 can be with a shunt transistor on the

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