i'm sorta curious as to what a musical application is for elliptical filters that cannot be better done with butterworth or, perhaps, type 2 tchebyshev filters?� the latter two are a bit easier to derive closed-form solutions for the coefficients. whatever.� (but i am curious.) -- r b-j � � � � � � � � �r...@audioimagination.com "Imagination is more important than knowledge." � ---------------------------- Original Message ---------------------------- Subject: Re: [music-dsp] Elliptic filters coefficients From: "Dario Sanfilippo" <sanfilippo.da...@gmail.com> Date: Fri, February 2, 2018 6:37 am To: music-dsp@music.columbia.edu -------------------------------------------------------------------------- > Thanks, Vadim. > > I don't have a math background so it might take me longer than I wished to > obtain the coefficients that way, but it's probably time to learn it. With > that regard, would you have a particularly good online resource that you'd > suggest for pole-zero analysis and filter design? > > Thanks to you too, Shannon. > > Best, > Dario > > On 1 February 2018 at 11:16, Vadim Zavalishin < > vadim.zavalis...@native-instruments.de> wrote: > >> Hmm, the Wikipedia article on elliptic filters has a formula to calculate >> the poles and further references the Wikipedia article on elliptic rational >> functions which effectively contains the formula for the zeros. Obtaining >> the coefficients from poles and zeros should be straightforward. >> >> Regards, >> Vadim >> >> >> On 01-Feb-18 12:00, Dario Sanfilippo wrote: >> >>> Hello, everybody. >>> >>> I was wondering if you could please help me with elliptic filters. I had >>> a look online and I couldn't find the equations to calculate the >>> coefficients. >>> >>> Has any of you worked on that? >>> >>> Thanks, >>> Dario >>> >>> >>> _______________________________________________ >>> dupswapdrop: music-dsp mailing list >>> music-dsp@music.columbia.edu >>> https://lists.columbia.edu/mailman/listinfo/music-dsp >>> >>> >> -- >> Vadim Zavalishin >> Reaktor Application Architect >> Native Instruments GmbH >> +49-30-611035-0 >> >> www.native-instruments.com >> _______________________________________________ >> dupswapdrop: music-dsp mailing list >> music-dsp@music.columbia.edu >> https://lists.columbia.edu/mailman/listinfo/music-dsp >> >> > _______________________________________________ > dupswapdrop: music-dsp mailing list > music-dsp@music.columbia.edu > https://lists.columbia.edu/mailman/listinfo/music-dsp �
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