Setting Oscillator 1 Frequency - Octave/Semitone/Cent

By clicking the corresponding up/down buttons you can tune, i.e. change the frequency of Oscillator 1 in three ways:

In Octave steps

The range is 0 - 9. The default setting is 4 (where "A" above middle "C" on your keyboard generates 440 Hz).

In Semitone steps

Allows you to raise the frequency in 12 semitone steps (1 octave).

In Cent steps (100th of a semitone)

The range is -50 to 50 (down or up half a semitone).