ODP: repl pots with vc

[Roman Sowa]

Done that in my Polysynth
State variable with Q control over CA3080.
Works OK. It can oscilate.
If you want there's a sample:
http://www.multimania.com/romcio/filtersweep.wav
eight voice filter sweep with high Q

Roman

> -----Oryginalna wiadomość-----
> Od:	Martin Czech [SMTP:martin.czech at intermetall.de]
> Wysłano:	8 lutego 1999 10:06
> Do:	synth-diy at mailhost.bpa.nl
> Temat:	repl pots with vc
> 
> Some modules have pots that are not so easy to replace with voltage
> control, e.g. Q in filters. No change in sound should occour. Over the
> weekend I tryed to figure out, how this could be done.
> 
> 3. Use ota. Better use 13700. Has anybody tryed to give a state var filter
> a ota resonance control ? I must try this.
> 
> 
> 
> Any comments ?
> 
> m.c.