Re: [LAD] Stabilising self-oscillating filters?

From: Fons Adriaensen <fons@email-addr-hidden>
Date: Mon Aug 27 2007 - 12:35:24 EEST

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?

Yes.

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

-- 
FA
Follie! Follie! Delirio vano è questo !
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Received on Mon Aug 27 16:15:02 2007

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