[PD] [bp~] really equal to [vcf~]?

[i go bananas]

just chipping in with my 2 cents that it would be fantastic to get more
documented info on all this.

especially curious about:  "but they can be combined to make other
possibilities."

what sort of possibilities???


On Thu, Jul 24, 2014 at 5:07 PM, Alexandre Torres Porres <porres at gmail.com>
wrote:

> 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 <msp at 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 <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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>
>
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