Prince Albert United Reformed Church 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 40 28 2.9 631 Eb2 24 962 B2 -45 1315 E3 -4 1733 A3 -37 2195.5 Db4 -17 3268 Ab4 -28 4442.5 Db5 2