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.


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