[PD] deep notch filter

Mathieu Bouchard matju at artengine.ca
Thu Aug 17 08:35:00 CEST 2006


On Thu, 17 Aug 2006, Hans-Christoph Steiner wrote:

> I want to build a very steep, narrow notch filter.  Any suggestions as 
> to how to do this?  I've played with [notch] and [biquad~] but haven't 
> seem to get the results I am looking for.

If you put twice the same filter serially, then the gain for each 
frequency will be squared (double the decibels). This makes the filter 
steeper (but not narrower).

  _ _ __ ___ _____ ________ _____________ _____________________ ...
| Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju
| Freelance Digital Arts Engineer, Montréal QC Canada


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