[PD] [bp~] really equal to [vcf~]?
msp at ucsd.edu
Sat Apr 12 19:13:59 CEST 2014
Yep - vcf~ is essentially a wrapper for cpole~.
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?
> 2014-04-12 13:36 GMT-03:00 Miller Puckette <msp at 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
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