TWPitch facilitates the use of pitch class notation in SuperCollider. Pitch class notation is a system in which pitches and their enharmonic equivalents are identified by integers ranging from
0: C 1: C sharp / D flat 2: D ... 9: A 10: A sharp / B flat 11: B
Octaves are identified by integers ranging from
inf. Pitch class
0 in octave
0 produces C at ~8.176Hz. Pitch class
9 in octave
5 produces A at 440.0Hz.