196650 ⎘
Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments; Special musical scales, i.e. other than the 12- interval equally tempered scale; Special input devices therefor; Equally tempered scale, i.e. note tuning scale in which every pair of adjacent notes has an identical frequency ratio equal to 2 to the power 1/n if the scale has n notes per octave Quarter tone scale, i.e. 24 equal intervals per octave, e.g. for Arabic music