Filter sub goes whistle by Daniel Bergqvist Karlsson

sub whistle

Don't know if it's corny or cool :) but anyway I was starting off with Starsky Carrs pwm+sub patch, and then added vibrato by modulating the vca with the lfo tri output, and then discovered the spooky whistle by having the "sub-osc" (aka filter resonance) sweeping up to higher frequencies by modulating it with the envelope.

Oh and you need a dummy cable in the ext audio input - couldnt draw a dummy cable in the patch here it seems?