I wanted to make sure that it is possible to tune the pitch to each cent in that range, so the number of cents has to be less than the knob range in pixels.
+/- 6 Semitones is +/- 600 cents, so totally 1200 cents (one octave). The range of the knob + CTRL key is 2000 px.
I could make it go +/- 1200 cents, but then it would be a bit harder to handle precise tuning and impossible to select some cents.
If you guys want a wider range, but less precision, let me know.
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