Harmonics 7–14: Difference between revisions

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{{Infobox ADO|steps=7}}
{{Infobox harmonics|7}}
'''7ado''' ([[ADO|arithmetic division of the octave]]), or '''7-ODO''' ([[otonal division]] of the octave), divides the octave into seven parts of 1/7 each. As a scale it may be known as [[Harmonic mode|mode 7 of the harmonic series]] or the [[Overtone_scale#Over-n_scales|Over-7]] scale. As 7 is a small odd number, this ADO does not contain a perfect fifth or any reasonable approximation to it, and it is relatively poor for its size at creating traditional tonal music.
{{Harmonics intro|7}} As 7 is a small odd number, this scale does not contain a perfect fifth or any reasonable approximation to one in its root position. This makes it relatively poor for its size at creating traditional tonal music unless rotated. The [[otonal heptad]] is the same scale but starting on the second degree.


== Intervals ==
== Intervals ==
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[[Category:ADO]]
== Scala files ==
<pre>
! harmd-mix.scl
!
HarmD-Mixolydian. Harmonics 7-14                                               
7
!
8/7
9/7
10/7
11/7
12/7
13/7
2/1
</pre>
 
 
{{Navbox harmonics}}
[[Category:7-tone scales]]
[[Category:Pages with Scala files]]

Latest revision as of 08:19, 11 October 2026

Harmonics 7–14
Prime factorization 7 (prime)
Dual sharp fifth 11/7 (782.492c)
Dual flat fifth 10/7 (617.488c)

The harmonics 7–14 (also harmonic series segment 7::14 or harmonic series mode 7) are a scale that consists of harmonics 7 through 14 (7:8:9:10:11:12:13:14) and repeats at the octave. Used as a tuning system, it is also called 7afdo. As 7 is a small odd number, this scale does not contain a perfect fifth or any reasonable approximation to one in its root position. This makes it relatively poor for its size at creating traditional tonal music unless rotated. The otonal heptad is the same scale but starting on the second degree.

Intervals

# Cents Ratio Decimal Interval name Audio
0 0 1/1 1.0000 perfect unison
1 231.2 8/7 1.1429 supermajor second
2 435.1 9/7 1.2857 supermajor third
3 617.5 10/7 1.4286 high tritone
4 782.4 11/7 1.5714 undecimal minor sixth
5 933.1 12/7 1.7143 supermajor sixth
6 1071.7 13/7 1.8571 tridecimal submajor seventh
7 1200.0 2/1 2.0000 perfect octave

Scala files

! harmd-mix.scl
!
HarmD-Mixolydian. Harmonics 7-14                                                
7
!
8/7
9/7
10/7
11/7
12/7
13/7
2/1


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