[sdiy] clickless muting

David G Dixon dixon at mail.ubc.ca
Mon Oct 29 05:23:18 CET 2012


> What I remember about this design was that the gates took 
> advantage of the virtual ground of the negative input of an 
> opamp as well as another gate being in the op amp feedback 
> loop.  It thus eliminated the usual signal distortion as well 
> as supported signals up to the supply rails - which a CD 
> series chip would normally not do.

Hmmm.  Interesting.  However, if the transmission gate is in the feedback
loop, then when this if off, the opamp hits the rail.  Are you sure it
wasn't at the input?

> Where are the "figures" you refer to?

Oops!  I forgot to type the source: Douglas Self's "Small Signal Audio
Design".




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