In FM mode, oscillator 1 generates a sine wave. The Wave 1 parameter has no effect in this mode.
FM mode oscillator parameters
Ratio coarse field: Drag to adjust the frequency ratio between oscillator 2 and oscillator 1 in semitone steps.
Ratio fine field: Drag to adjust the frequency ratio between oscillator 2 and oscillator 1 in cents. One hundred cents equals one semitone step.
FM Int slider: Drag to determine the intensity of modulation. Higher values result in a more complex waveform with more overtones.