[sdiy] NIC-based wave folder/shaper

[Ian Fritz]

> > I think this circuit begs to have a tracking bipolar supply
> > connected to the opamp so you can vary the point at which
> > the opamp saturates....
>
>Or for a bounding circuit which allows the opamp output to
>be clipped without the opamp being saturated. It might
>make a difference with high pitched input signals.

Yes, I agree.  I generally prefer not to bang an amplifier into saturation, 
but for a quick and simple initial circuit I thought it would be OK.  And 
it's what was suggested in the Itoh paper.

   Ian