For those that haven't come across the rather groovy MIDI MurF Moogerfooger (aka MF-105M MIDI Multiple Resonance Filter Array) it's well worth checking out - have a peek at the video demos on the Moog ...
2RuleFilter is described by its designers as a self-resonant Moog type filter that allows the filter cut-off frequency to be controlled manually, or by LFO, or by an envelope follower. They say that ...