Walsh Function Primer

[Ken Stone]

>Hi folks. This walsh function thing is really hotting up. To generate the
>high frequency needed I used a CEM3340 with a smaller cap than usual.
>Tuning wasn't a problem, but I was only using it monophonically, it may be
>worse if you were to mix it with another VCO.

My roland 100m VCO runs high enough to drive the Digisound wavetable as it is,
so chances are it won't have problems. As i only run the beast of an analog
sequencer, I have no idea of how it tracks though.

>And remember, you need to use a tracking filter to iron out the nasty
>staircase waveform you get when you add those rectangular babies together.
>I used a SSM vcf, it worked a treat. Shame my digital EG didn't work. Long
>live the ADSR!!

Maybe use the same trick as used in the Digisound VCDO - a 741 with a sluggish
slew rate. The Digisound module (or rather, my version of it) produces waves
that look very good on a CRO. No stepping at all.

Ken
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                Ken Stone  sasami at blaze.net.au
                   ** Catgirl Paradise **
               <http://www.anime.net/~kens/>
         ** Australian Miniature Horses and ponies **
             <http://www.blaze.net.au/~sasami/>
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