Hi, On Mon, Dec 15, 2014 at 03:41:45PM +0000, Claude Heiland-Allen wrote: > On 15/12/14 14:49, Alexandre Torres Porres wrote: > >Do any of you know if they're Butterworth or what? > > I'm not sure how much difference it makes for low-order filters > (biquad has 2 poles and 2 zeros). The differences really matter > more for higher order filters, say 8 poles or more... > > You could waste time calculating coefficients for a biquad cascade > (the process is quite involved - see the mkfilter package online), > but I'd just use the ones already made in iemlib...
There's also a 3rd order BW in the docs, if you're interested in the inner workings: 3.audio.examples/H13.butterworth.pd Ciao -- Frank Barknecht _ ______footils.org__ _______________________________________________ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list