[PD] convert reson filter bandwidth to decay time

Libero Mureddu libero.mureddu at gmail.com
Wed Jan 23 23:23:45 CET 2008

Hi Derek,
thanks for your help, but my problem is related with the answer given
by Charles Henry.
Thanks anyway!

On Jan 22, 2008 7:43 PM, Derek Holzer <derek at umatic.nl> wrote:
> Is what you are looking for a resonant comb filter? I.e. a delay line
> with a resonant frequency which "rings"? Check the archives for the
> "resonant comb filter series" thread. Me, Davide Morelli and Ian
> Smith-Heisters worked out a bunch of stuff there. I wouldn't know
> off-hand how to convert a band pass filter to a comb filter, though. I
> only how to do it with delay lines right now. Some Googling on filter
> theory could fix that pretty fast, though...
> best,
> d.
> Libero Mureddu wrote:
> > Hi,
> > I have  a simple patch with a [click~] object connected to a [reson~]
> > filter. I'd like to know how it is possible to convert the bandwith
> > parameter of the filter to decay lenght (in milliseconds).
> > In SuperCollider there is a particular version of the "resonz" filter
> > called "ringz", here is the description:
> > Ringz.ar(in, freq, decaytime, mul, add)
> --
> derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
> ---Oblique Strategy # 117:
> "Make it more sensual"

Libero Mureddu
Vanha Viertotie, 21 as 417
00350 Helsinki

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