[sdiy] State Variable Filter self oscillation

[Grant Richter]

This is straight from the 13700 ap note.

> From: "Paul Maddox" <P.Maddox at signal.qinetiq.com>
> Reply-To: "Paul Maddox" <P.Maddox at signal.qinetiq.com>
> Date: Wed, 2 Apr 2003 09:00:36 +0100
> To: <synth-diy at dropmix.xs4all.nl>
> Subject: Re: [sdiy] State Variable Filter self oscillation
> 
> John,
> 
>>> Has anyone built a classic state variable that can oscillate?
>>> 
>>> I have a few versions of this filter that get close but do not sustain
>>> an oscillation.
> 
> Chris Macdonalds does, I have two of them in my modular (currently
> undergoing a facelift).
> and MAN do they oscillate :-)
> 
> Paul
> 
>