Equal Temperament - Twelve-tone Equal Temperament

Twelve-tone Equal Temperament

In twelve-tone equal temperament, which divides the octave into 12 equal parts, the width of a semitone, i.e. the frequency ratio of the interval between two adjacent notes, is the twelfth root of two:

(98.9545922303675 cents)
(99.9940603186753 cents)
(100.000000672849 cents)

This interval is divided into 100 cents.

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