From: Pitch Ranking, Melody Contour and Instrument Recognition Tests Using Two Semitone Frequency Maps for Nucleus Cochlear Implants
Groups
Semitone intervals
1
D3, D3#
D4, D4#
D5, D5#
G3#, A3
G4#, A4
G5#, A5
3
D3, F3
D4, F4
D5, F5
G3#, B3
G4#, B4
G5#, B5
6
D3, G3#
D4, G4#
D5, G5#
G3#, D4
G4#, D5
G5#, D6