Yeah, I'm interested in SVF mainly for modulating the cutoff frequency, although that's not necessarily important in this application (unless the firmware modulates the cutoff frequency; I don't attach the LFO to it)... which would imply it's also equivalent to trapezoidal integration in the time-varying case (which ... is what you really want when modulating filters). The trapezoidal SVF is known to be ridiculously well behaving numerically, with or without modulation.
I guess for an output filter I could use a ladder-lattice, although I'm not sure if I can just calculate the same b0 b1 b2 a1 a2 poles and zeroes as for a biquad and stick them in the place for the respective coefficients. Ladder-lattice looks neat though. Zeroes across the top and then it flows down through the ladder. I really need to find a good book on this.
Does "trapezoidal SVF" have something to do with trapezoidal versus rectangular riemann sums or are we getting into territory where I need more than just the one math course I've taken to understand what's going on?
Statistics: Posted by jrmoserbaltimore — Fri Jan 05, 2024 2:28 am