So the modulator stage takes a modulation frequency input and a carrier frequency input
The modulation frequency input "frequency rate" changes the amplitude of the carrier signal
Example
So if the frequency rate is going up and down , up ,up and down , down , up
The amplitude of the carries is going to go up and down, up , up and down, down , up
This is like a LFO frequency interfaced with a Volume pot
But a modulator is still different if u look at the pictures/graphs it compresses and expands the "envelope voltages"
This Envelope voltage compressing and expanding is what im confussed about