[PD-dev] [PD] steep filter?

[volker böhm]

sorry, wrong list.
this is so stupid...

On 16 Mar 2009, at 11:31, volker böhm wrote:
>
>> Jo?o Pais hat gesagt: // Jo?o Pais wrote:
>>
>>> 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.
>
>
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