[sdiy] polivoks filter

[Sven Windisch]

Hi all.

Somewhere i read about the Polivoks, a russian synth, and it's filter.
Could someone please point me to a schematic of this filter??

Greetings,
Sven.

-- 
To some ears, "computational philosophy of science" will
sound like the most self-contradictory enterprise in
philosophy since business ethics.
[Paul Thagard in "Computational Philosophy of Science"]