[sdiy] random thought about sine shapers

[David G. Dixon]

I was just looking at the front panel of the Buchla 261e (VCO), and I had a
thought:  Why not take the sine symmetry and shape trimmers on my VCO out to
the front panel?  The shape trimmer in particular goes from triangle through
sine to square.  That would be a pretty useful thing to have under user
control, or even voltage control (could be a creative use for one of those
spare 2164 VCAs...).

A question:  What does a typical waveform selection knob actually do?  Does
it simply crossfade from one static waveshape to another, or is it
performing an actual waveshaping function, like a sine shape trimmer?