[sdiy] Walsh Generators

[Tony Clark]

> > There were a number of experiments with using sliders to 'draw' waveforms
> > directly...
> 
> I remember in the electronic music lab at Wash U, I once took the
> sequencer on the 2500 and clocked it at audio rates. You could get some
> wild sounds that way - it was weird hearing it shift from individual tones
> or amplitudes into a totally new sound with a pitch at the rate you were
> clocking it at. I remember modulating both the VCA and the VCO with it.

   I can do this with the sequential voltage generator I built last 
year.  It's pretty interesting, but nothing too terribly radical.  Having 
the ability to lag (smooth) the steps is a plus, but still nothing overly 
impressive.
   A simple lo-rez digital oscillator (ala Monowave) is much more 
interesting, so I'm sure that must be why we don't have modular synths 
with 8 sequencers and no VCOs.

   OTOH, I really need to get around to making these Walsh chips I have 
into modules...then maybe I'll have a bit more to say about this stuff.

   Cheers,

   Tony

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