[sdiy] SVF: 2-pole to 4-pole ?

Paul Perry pfperry at melbpc.org.au
Tue Nov 11 00:10:46 CET 2003


At 05:47 PM 10/11/03 -0500, you wrote:
>two filter sections.....in the case of a SVF that would mean quad FREQ 
>pots, which is not feasible for me.

FWIW, the MS20 pitch to voltage section has a quad frequency pot for the
low pass filter at its input.
The beauty of PWM switched resistor filters, is that you can have as many 
"pots" ganged as you want ;D
But an OTA based filter allow as many "variable resistors" as you want too.
paul perry melb aust




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