
At now I'm using an expression pedal connected to my MIDI keyboard/controller to emulate a wah pedal.
Being a very long time since the days i stomped a wah-wah, i can't exactly remember the behaviour of the pedal: does it broaden filter bandwidth (or sweep to high freq) when pushing down, or vice versa?
Moreover, which is the more suitable filter, a resonant lowpass, a band pass or what else? Which filter order (4 pole)?