[sdiy] 2164-based SVF [was: Re: SEM filter questions]

[David G Dixon]

> Here is Motohiko Takeda's example:
> 
> http://www.aleph.co.jp/~takeda/radio/harvest/img/schem/ssm2164
> -schem.gif

This one is interesting too, as he has put the limiting diodes on the input
summer, and has used the spare pair of VCAs as a linearized VCA, and used a
JFET to provide VCQ.  There seems to be a very large variety of approaches
to handling the resonance.  Someone should do a comparison...