Harmonics 6–12: Difference between revisions

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{{Infobox AFDO|steps=6}}
{{Infobox harmonics|6}}
[[File:6ado scale.wav|thumb]]
[[File:6ado scale.wav|thumb]]


'''6afdo''' ([[AFDO|arithmetic frequency division of the octave]]), or '''6odo''' ([[otonal division]] of the octave), divides the octave into six parts of 1/6 each. It is a superset of [[5afdo]] and a subset of [[7afdo]]. As a scale it may be known as [[Harmonic mode|mode 6 of the harmonic series]] or the [[Overtone scale #Over-n scales|Over-6]] scale. ([[Budjarn Lambeth]] calls it the ''Freeway scale''.{{idiosyncratic}}) In its root position, 6afdo is an effective system that contains several useful intervals such as [[7/6]], [[4/3]] and [[3/2]], although it lacks a major third.
{{Harmonics intro|6}} In its root position, it is an effective system that contains several useful intervals such as [[7/6]], [[4/3]] and [[3/2]], although it lacks a major third.


== Intervals ==
== Intervals ==
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== Scales ==
== Scales ==
6:7:8:9:11:12 Geode{{idiosyncratic}}
6:7:8:9:11:12 Geode{{idiosyncratic}}
{{Navbox harmonics}}

Latest revision as of 23:52, 10 October 2026

Harmonics 6–12
Prime factorization 2 × 3
Fifth 9/6 (701.955c)

The harmonic segment 6::12 (also harmonics 6–12) consists of harmonics 6 through 12 (6:7:8:9:10:11:12) and spans one octave above the root. Used as a scale, it is also called mode 6 of the harmonic series. In its root position, it is an effective system that contains several useful intervals such as 7/6, 4/3 and 3/2, although it lacks a major third.

Intervals

# Cents Ratio Decimal Interval name Audio
0 0 1/1 1.000 perfect unison
1 266.9 7/6 1.1667 subminor third
2 498.0 4/3 1.3333 just perfect fourth
3 702.0 3/2 1.5000 just perfect fifth
4 884.5 5/3 1.6667 just major sixth
5 1049.4 11/6 1.8333 undecimal neutral seventh
6 1200.0 2/1 2.0000 perfect octave

Scales

6:7:8:9:11:12 Geode[idiosyncratic term]

View • Talk • EditOvertone scales 
Small modes 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24
Larger modes 30 • 32 • 36 • 48 • 60 • 128
Families /2: 2 • 4 • 8 • 16 • 32 • 128
/3: 3 • 6 • 9 • 12 • 15 • 18 • 21 • 24
/5: 5 • 10 • 15 • 20 • 25 • 30 • 35 • 60 • 80
/7: 7 • 14 • 21 • 28 • 35 • 56
/11: 11 • 22 • 33
/13: 13 • 26
Related Harmonic series • Subharmonic series • Carlos harmonic scale • Ringer scale • Primodality