Harmonics 27–54: Difference between revisions

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{{Infobox AFDO|steps=27}}
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'''27afdo''' ([[AFDO|arithmetic frequency division of the octave]]), or '''27odo''' ([[otonal division]] of the octave), divides the octave into 27 parts of 1/27 each. It is a superset of [[26afdo]] and a subset of [[28afdo]]. As a scale it may be known as [[Harmonic mode|mode 27 of the harmonic series]] or the [[Overtone scale #Over-n scales|Over-27]] scale.
{{Harmonics intro|27}}

Latest revision as of 00:27, 11 October 2026

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Harmonics 27–54
Prime factorization 33
Dual sharp fifth 41/27 (723.197c)
Dual flat fifth 40/27 (680.449c)

The harmonics 27–54 (also harmonic series segment 27::54 or harmonic series mode 27) are a scale that consists of harmonics 27 through 54 (27:28:…:54) and repeats at the octave. Used as a tuning system, it is also called 27afdo.