[PD] pd filter with pole and zero

[cyrille henry]

Hello Claude,

this is very nice.

changing resonnance does affect the amplitude, so it's quite hard to use this parameter.
so i think it's possible to make a better one, but i'll use it for now.

thanks
Cyrille

 
Claude Heiland-Allen a écrit :
> cyrille henry wrote:
>> i did not find in any of them a low pass resonant filter but i'll have 
>> to investigate.
> 
> I made a (non-scientific, but sounds ok to my (bad) ears...) resonant 
> low-pass filter, see attached.  two zeros at 1/2 sampling rate, plus two 
> poles (conjugate pair) that can be moved about controlled by audio 
> input.  The gain formula comes from Miller's book, iirc, and I probably 
> misused it, but it seems to work ok.
> 
>> thanks,
>> cyrille
> 
> Thanks,
> 
> 
> Claude
> 
> 
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