The frequency in Hertz (Hz, cycle per second) of a sound can be estimated based on knowledge of the octave and semitone.
There are 8 octaves ranging from C0 to C7.
sound frequency in Hz =
= (frequency of C0) * (2 ^ (octave number from 0 to 7)) * (semitone ratio frequency)
The frequency of C0 is 16.35156 Hz.
The semitone value is described in the previous section. It describes the power of 2^(1/12) associated with the semitone.
