> it's accurate to say that [biquad~] is a real-valued 2-pole/2-zero filter.
but why, if the poles and zeros can have complex values? 2014-07-25 8:18 GMT-03:00 IOhannes m zmölnig <zmoel...@iem.at>: > On 07/24/2014 10:14 PM, Alexandre Torres Porres wrote: > >> vcf~ isn't a 2-pole real filter but a 1-pole complex one > > > > kinda relative to this, since biquad~ can be emulated with 2 complex > poles > > + 2 complex zeros > > it can not only be emulated, it can be implemented with a complex > 2-pole/2-zero filter. > > > , is it more accurate to say biquad is a > > 2-complex_pole-2-complex_zero-filter??? > > > > no. > it's accurate to say that [biquad~] is a real-valued 2-pole/2-zero filter. > > real values are a subset of complex values (with the imaginary part set > to 0). > > > In its description it says it is a 2-pole-2-zero-filter... > > which is true. > > gfmasdr > IOhannes > > > > _______________________________________________ > Pd-list@lists.iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > >
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