filter with v cont F&Q

[Paul Perry]

.....wonder whether anyone has built the state varable
filter with f and q control shown in Hal Chamberlin's
Musical applications of Microprocessors 1st ed. p209.
uses three 3080s and four TL084 stages.....also wonder how 
similar it is to the filter section of the Electroharmonix
 env follower filter just released.....

actually i don't see much reference to the chamberlin book,
or its 2nd ed, but despite the d*gital content there are 
eminently practical ckts there

paul perry melb australia