[sdiy] Smith's Evolver Desktop's spikey VCO waveforms

Michael Zacherl sdiy-mz01 at blauwurf.info
Thu Jun 6 18:08:49 CEST 2013

On 6.6.2013, at 09:39 , Mattias Rickardsson wrote:

> Den 6 jun 2013 01:24 skrev "Michael Zacherl" <sdiy-mz01 at blauwurf.info>:
> >
> > yeah, I think the triangle is the only shape where this glitch can be heard.
> The triangle is a soft waveform without discontinuities, so even a much smaller glitch than the one you showed will be heard easily.
> > but the 'normal' notches on triangles I know are right on the tip of the wave and (IIRC!) symmetric on both halves.
> The ordinary simple way of constructing the triangle from a rectified sawtooth gives this glitch (if nothing more is done to prevent it). It's just on the tops OR the bottoms though!

alright, so I didn't recall correctly - thanks.
I just looked up some schematics to refresh my memory.

> Regarding the other waveforms, I don't know what could possibly cause glitches in them. But it's not as critical soundwise.

of course, and it's the triangle wave where he became aware that something's wrong.


keep your ears open: http://blauwurf.at

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