[sdiy] multiplier questions/experiments AD633

[David G. Dixon]

> > If you take a four-quadrant multiplier, and feed it two
> > audio rate signals, it makes a great "ring modulator"
> > sound...
> 
> Unless you have a DC offset on any of the inputs, which causes fairly
> severe leakages.

Yes 4-quadrant multipliers should always have the option of AC coupling on
the inputs.  I like to do it with a switch, so I can also use them for CV
processing.