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 visualization).
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). cheers Em sáb., 12 de set. de 2020 às 06:55, Jean-Marie Adrien < [email protected]> 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 > > > > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > https://lists.puredata.info/listinfo/pd-list >
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