How come it sounds like discrete notes even thought I move continuously? Like I can move around a bit and the note doesn't change very much and then all of a sudden it changes in a discrete jump?
Quantising the oscillator pitch into discrete steps like this is pretty common when it comes to synthesisers. Generally there is also a fine-tuning control that allows the user to offset the output by up to an octave. Makes it easier to not be out-of-tune with other instruments.