Hi Miller, still trying to get my head around this. But anyway, one thing I have to note is that the source code of [vcf~] says it is a "two pole filter", not a "one complex pole" filter.
Should that description be changed? If not, why? thanks 2014-04-12 14:13 GMT-03:00 Miller Puckette <m...@ucsd.edu>: > Yep - vcf~ is essentially a wrapper for cpole~. > > cheers > M > > On Sat, Apr 12, 2014 at 02:10:19PM -0300, Alexandre Torres Porres wrote: > > that's great to know, thanks! > > > > Let me just see if I get a bit of the theory. Can I get [vcf~] with just > > one [cpole~] object and the right coeficients? > > > > Cheers > > > > > > 2014-04-12 13:36 GMT-03:00 Miller Puckette <m...@ucsd.edu>: > > > > > They're quite different. bp~ is the cheapest possible bandpass filter > > > (as far as I know). vcf~ is a one-pole complex filter whose outputs > are > > > the real and imaginry parts. The real part may be used as a resonant > > > bandpass filter and the imaginary as a resonant low-pass filter, but > > > they can be combined to make other possibilities. > > > > > > It's possible to graph their frequency responses using the help patch > > > "H10.measurement.pd' in 3.audio.examples. > > > > > > cheers > > > Miller > > > > > > On Sat, Apr 12, 2014 at 04:28:11AM -0300, Alexandre Torres Porres > wrote: > > > > Hi there, who can confirm that both [bp~] and [vcf~] are exactly the > > > really > > > > same thingy? The code looks quite different... > > > > > > > > Moreover, why the two outlets for vcf~? Help doesn't say anything. > > > > > > > > Thanks > > > > > > > _______________________________________________ > > > > pd-l...@iem.at mailing list > > > > UNSUBSCRIBE and account-management -> > > > http://lists.puredata.info/listinfo/pd-list > > > > > > >
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