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

[Joe White]

Hey Alexandre,

This blog - EarLevel
Engineering<http://www.earlevel.com/main/2003/02/28/biquads/> -
really helped with my understanding of poles/zeros and biquads. Hope it's
useful!

Cheers,
Joe


On 24 September 2013 06:36, Alexandre Torres Porres <porres at gmail.com>wrote:

> for what i see, it's not some sort of straight formula, right? seems a bit
> more complicated than that.
>
> cheers
>
>
> 2013/9/23 Funs Seelen <funsseelen at gmail.com>
>
>> 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
>>>
>>
>> Cool.
>>
>>
>>>
>>> > 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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