Q: what do filter cutoff and resonance mean for a synth
A: if your synth has a filter cutoff knob, if you turn it down it will sound like someone closed the windows, while the sound is outside. (it cuts out the high frequency). if you turn it up and down it will make a 'wawawa' sound, like a wa-wa pedal, which does the same thing. resonance, i don't really know how that one works, i just know if you turn it up too high it makes a loud squeal