button sets a <em>constant</em> playback/record speed. It can be set
in semitones (1 semitone = × 2 <sup>1⁄12</sup> ≈
105,9%), or cents of semitones, and is armed/disarmed by clicking the
button sets a <em>constant</em> playback/record speed. It can be set
in semitones (1 semitone = × 2 <sup>1⁄12</sup> ≈
105,9%), or cents of semitones, and is armed/disarmed by clicking the