[PD] Resonant filter using cpole~ czero~

[Frank Barknecht]

On Thu, Feb 02, 2012 at 03:32:00AM +0000, Ed Kelly wrote:
> Here is my first attempt at making a resonant lowpass filter using cpole~ and
> czero~ objects. It's the first version I've made which actually sounds
> halfway towards what I want to achieve, which is a decent diode-ladder or
> transistor-ladder filter emulation. I want to make this using only vanilla
> objects, particularly rpole~, cpole~ etc. so that they can be ultra-portable
> and signal-controlled. Also,
> http://www.timstinchcombe.co.uk/index.php?pge=poles#diode
> 
> 
> Does anyone else have any ideas, or patches we can share?

Most filters in the rj library (https://github.com/rjdj/rjlib) use a similar
approach. They even include a biquad-clone written with elementary filters. Some
are modelled after the classic reson-filters used since CSound times.

Ciao
-- 
 Frank Barknecht            Do You RjDj.me?          _ ______footils.org__