What are the equations for all those funny knobs?

Brian Towles gt7276a at prism.gatech.edu
Fri May 8 02:30:28 CEST 1998

As I try to design my first VCF, I'm trying to correlate how
different filter quality names relate to the frequecny response
of a filter.  Obviously cutoff is cutoff.  What about resonance?
Does that have something to do with the Q value?  Also,
people are always talking about 12db/24db rolloff -- has
anyone ever designed a 36db rolloff filter?  Or is that just
too crazy !? ;)


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