My question is pretty simple, i'd like to know where can i get some information on what is really the vcf~, i've read the help and it says it's a resonnant bandpass and low pass filter. Where can i get more information about these? I've already read about how to build analog filters and the math involved but can't make an idea of how a vcf~ works in real life.

Thanks,
Jose

Hi, I would recommend you to take a look at chapter 8.4.1 "Subtractive synthesis" in Miller Puckette's book The Theory and Technique of Electronic Music, available at http://msp.ucsd.edu/techniques.htm, and then pages 256-257 (of the book printed page numbering, not the pdf file page numbering) for the usage in Pd.

Cheers,
Gilberto

@gsagostinho Thanks!! I will do it right now. I´ll keep posting if i have more doubts.

Thank you very much Gilberto,
Jose

My pleasure, Jose, and fire up if you have any more questions. I have to say that Miller's book is really the ultimate source for these kind of things, in particular if you want to understand what truly goes on with these objects (be ready for some good amount of math).

Cheers!
Gilberto

< https://ccrma.stanford.edu/~jos/filters/Complex_Resonator.html >

@Jojo-Lapin Thanks Jojo!! i'll check that when i finish reading the chapter from the book.