[PD] convert reson filter bandwidth to decay time

Derek Holzer derek at umatic.nl
Tue Jan 22 19:43:05 CET 2008

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...


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"

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