[PD] Good filtering package

Alexandre Torres Porres porres at gmail.com
Sat Sep 12 15:35:07 CEST 2020

If you just want to see the freq/phase response, check [else/biplot], an
abstraction that plots biquad coefficients (also more than one biquad
filter in cascade). Use it with [else/bicoeff] that generates the
coefficients for many different filters - all of which are also present as
dedicated objects that also take signals to set frequency/resonance, like
else/bandpass~ (so you can use them and then bicoeff/biplot just for

The biplot is actually an abstraction and you can build your own to plot
from difference equations/transfer functions. The ELSE library comes with a
tutorial that explains lots of computer music theory, including this filter
theory (see chapter 31). For reference, see
https://github.com/porres/pd-else/releases but you can also get it directly
from Pd (aka deken).


Em sáb., 12 de set. de 2020 às 06:55, Jean-Marie Adrien <
jm.adrien.mnt at gmail.com> escreveu:

> Hello List
> Just to know : is there somewhere a good package / object for sound
> filtering with a sort of graphical interface showing the transfer function
> a bit like what is available in the Logic pro channel EQ, (a bunch of
> filters with frequency center, Q and dB sort of and resulting transfer
> function against freq) ?
> Thanking !
> Jm
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