[sdiy] pitch quantizing

harry harrybissell at prodigy.net
Mon Jun 4 04:54:41 CEST 2001


You could use a Wiard / Blacet Mini-Wave and quantize to several preset
scales in ROM. I'm using this on a Theremin with pitch to voltage control
PV-1.  <cheap plug mode>

<cheap shot political statement mode on>

I'd send you a schematic... but Grant won't send me one   ;^)

(tee hee!)

H^) harry

all modes off



René Schmitz wrote:

> At 16:33 02.06.01 -0400, Mountain Man wrote:
> >Actually, voltage quantization for CV's would be fine ... how would I do
> >*that* ?  :)
>
> An discrete solution to that would start with a staircased waveform voltage.
> (E.g. from a counter and a DAC.)
> Then comparing the input CV with the staircase, as soon as the input is
> greater than the input, you sample&hold the current voltage of the staircase.
> The counter would have to run pretty fast to get a decent response time.
>
> The polyfusion 2092 quantizer did it that way.
> I have a schematic, if anyone is interested.
>
> Cheers,
>  René
>
> --
> uzs159 at uni-bonn.de
> http://www.uni-bonn.de/~uzs159
>
>




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