Re: [PD-dev] [PD] steep filter?

Jo?o Pais hat gesagt: // Jo?o Pais wrote:

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I looked in my list of pd-ext objects, but found no elliptic filters. are there any, or any way of getting their coefficients to use with biquad~?

Elliptic filters are rather hard to design, most of the time you will find Butterworth or Chebyshev designs in our little audio world.

hey, joão you still haven't made friends with fft? ;) i've just finished a max external that does chebyshev filtering with a variable number of poles and adjustable % of ripple in the passband. repackaging this into a pd external wouldn't be too hard. if you are interested in trying this out, drop me a mail and i'll see when i can get it done. volker.