On Fri, 14 Apr 2000, Frank Vanaman wrote:
> Here's a link to something similar--
> It looks like something which might be fun to build and use on its own,
> though it really doesn't cover the whole harmonic series, just octaves
> and fifths.
> Someone with an electronics background might be better equipped to
> comment on whether or not this could be modified to cover more/other
> pitches or harmonics.
>
> http://www.idg.se/personal/bergfors/bergfotron/vco.htm
> -head for the "octave quantizer" section
What this is is a 4-bit "flash" digitizer built around four comparators
with binary weighting. These four bits select which 'tiered' voltages get
to be summed for the new CV output. The trick to this circuit is in the
accuracy of those 20K resistors in the voltage divider/buffer chain. I'll
have to make one and see how it performs.
Crow
/∗∗/