The VA engine consists of 3 different wave shapes with a morph parameter.
Bottom waveform is at 0, mid waveform is at 0.5 and top waveform is at 1.
The amplitude parameter is set by default to an ADSR but that can be changed if needed.
Pitch controls the relative pitch, at 1 is the root note and at 0 is a 12 cent below.
Pulse width controls the length of the pulse or square wave.