[PD-dev] I need a formula

[Dan Neveu]

On Mon, 3 Jun 2002, Yves Degoyon wrote:

> hi,
> 
> i'm trying to use a bp~ object so that it can filter
> frequencies betweem Fmin and Fmax.
> 
> i think the central frequency should be set to ( Fmin+Fmax )/2,
> but what value should be given to the Q factor ??

assuming that you consider Fmin and Fmax to be the -3dB cutoff points, then
the formula should be:
Q = Fcenter/(Fmax-Fmin)

-dan

> 
> thanx.
> 
> yves/
> 
> 
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