[PD] algorithms for drawing filter response curves

[Hans-Christoph Steiner]

On Feb 7, 2011, at 3:33 PM, Mathieu Bouchard wrote:

>>>> On 07.02.2011, at 00:12, Hans-Christoph Steiner wrote:
>>>>> I've started to write a GUI for generating biquad coefficients  
>>>>> (something like Max/MSP's [filtergraph~]).  I've gotten the GUI  
>>>>> interaction working well, now I'm looking for the algorithms for  
>>>>> generating a plot of the frequency response of a given set of  
>>>>> biquad coefficents?  It'll end up being Tcl, but I can easily  
>>>>> read C, Csound, Java, Perl, Python, etc.
>
> Actually, why don't you push a [sig~ 1] through a [rifft~] and use  
> that as a probe with which you will connect to a spectrogram patch ?
>
> (the probe's [rifft~] and the spectrogram's [fft~] have to use the  
> same block size.)


Because I'm doing this in Tcl... Its a GUI object.

.hc






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