[sdiy] Harmonic content of the "sigmoid" half-sine wave

David G. Dixon dixon at interchange.ubc.ca
Wed Jun 3 20:14:59 CEST 2009


Yup!  Around here, it's "Re-invented Wheels 'R' Us"!

> Golly! I think you've just reinvented Casio's Phase Distortion
> synthesis! Only this time it's analog!
> 
> 
> On 3 Jun 2009, at 18:55, David G. Dixon wrote:
> 
> > Oh yeah, I almost forgot!  What would also be cool is the ability
> > to morph
> > the incoming wave from saw-to-triangle-to-ramp, and put that into
> > the sine
> > shaper.  This is easily done with a couple of diodes or a couple of
> > JFETs on
> > the triangle core.  My LFOs do this, and they can generate
> > frequencies into
> > the audio range.  Maybe I'll rig that up through a sine shaper (too
> > bad I
> > didn't put sine shapers on my LFOs!).
> >
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> >





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