[LAD] Stabilising self-oscillating filters?

Fons Adriaensen fons at kokkinizita.net
Mon Aug 27 09:35:24 UTC 2007

On Mon, Aug 27, 2007 at 12:32:26AM +0100, Gordon JC Pearce wrote:

> Something I've been wondering about recently is this - if you implement
> a digital filter, how do you maintain stability when it's pushed into
> self-oscillation?  Most "real" synths seem to put out a slightly clipped
> sinewave when in self-oscillation.  Might it be as simple as an atan()
> clipper in the feedback loop?


You can use atanf(), tanh(), x / sqrtf (1 + x * x), ...


Follie! Follie! Delirio vano è questo !

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