Riebeek West, DRC Hum Prime Tierce Quint Nominal Superquint Double Octave Diameter Height Thickness Freq Note Dev Freq Note Dev Freq Note Dev Freq Note Dev Freq Note Dev Freq Note Dev Freq Note Dev 50.5 36 4.3 559.5 Db2 15 930.5 Bb2 -3 1221.5 Eb3 -32 1675.5 Ab3 14 2006.5 B3 26 2939 F#4 -12 3977 B4 11