[PD] how to change bp~ frequency at sample rate?

[Andy Farnell]

Yes its useful to have signal control over resonance too
although less common to need it. An example is if you make
a string or drum skin model with parallel resonances and you 
want to dampen it when it's sounding.

Its been done before using [rpole~] and [rzero~] objects,
but IIRC was unstable when sweeping the resonance and
cutoff simultaneously. Filter topologies, with 
the same poles and zeros but in different orders, will behave
differently when you vary the coefficients, so testing
with envelopes on both controls should be done.


On Fri, 2 Sep 2011 16:49:14 -0400 (EDT)
Mathieu Bouchard <matju at artengine.ca> wrote:

> On Fri, 2 Sep 2011, Roman Haefeli wrote:
> 
> > According to its helpfile, [vcf~ ] is the same as [bp~ ], but with a 
> > voltage controlled aka signal rate inlet for frequency.
> 
> Now let's say that I want to have all three inlets as signals.
> 
> Is there an abstraction for doing that ?
> 
> I just made part of one, by looking at 
> http://crca.ucsd.edu/~msp/techniques/latest/book-html/node143.html
> 
> But I'm not done yet. Anyone interested ?
> 
>   _______________________________________________________________________
> | Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, QC


-- 
Andy Farnell <padawan12 at obiwannabe.co.uk>