[PD] Resonant filter using cpole~ czero~

[Mathieu Bouchard]

Le 2012-02-19 à 14:08:00, Mike Moser-Booth a écrit :

> Pretty sure, though I mess that up all the time. Aren't you supposed 
> change the signs of the feedback coefficients when z-transforming the 
> difference equation?

Why would you change the signs of a and b but not c ?

(Was I giving the formula relative to ax²+bx+c=0 or did I assume ax²+bx=c 
by accident ?)

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