[PD] from poles/zeros to biquad coefficients - how to? (something like max's z-plane)

Funs Seelen funsseelen at gmail.com
Mon Sep 23 19:10:47 CEST 2013

On Mon, Sep 23, 2013 at 5:35 PM, Alexandre Torres Porres
<porres at gmail.com>wrote:

> thanks, here's a pic of what I have so far
> https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn1/11212_10151872996046683_1825736206_n.jpg


> > For extra inspiration you could have a look at PoZeTools
> It sure does look like what I need. Thanks. But extracting what I need to
> know about the math of converting from coordinates to coefficients was just
> over my head :P unfortunately, sorry.
> I was hoping for something simpler, like just the operations needed. If
> the info is in code, I need it to more explicit. I'd really appreciate if
> anyone knows how to read from this and just points it out for me so I can
> put it in a patch.
> I'm assuming it's rather simple math

I remember I once learned how to do this but never repeated the practice.
If I find time to do that I would gladly try to figure it out again, but if
someone more experienced feels the urge to chime in before that time I
would be very happy too :).
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