Harmonics 11–22: Difference between revisions

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{{Infobox AFDO|steps=11}}
{{Infobox harmonics|11}}
'''11afdo''' ([[AFDO|arithmetic frequency division of the octave]]), or '''11odo''' ([[otonal division]] of the octave), divides the octave into eleven parts of 1/11 each. It is a superset of [[10afdo]] and a subset of [[12afdo]]. As a scale it may be known as [[Harmonic mode|mode 11 of the harmonic series]] or the [[Overtone scale #Over-n scales|Over-11]] scale. As 11 is a small odd number, this AFDO does not contain a perfect fifth above the root, although it does contain a [[16/11]] subfifth and a [[17/11]] ultrafifth / inframinor sixth.
{{Harmonics intro|11}} As 11 is a small odd number, this scale does not contain a perfect fifth above the root, although it does contain a [[16/11]] subfifth and a [[17/11]] ultrafifth / inframinor sixth.
 
[[:File:11afdo notes.jpg|File:11afdo notes.jpg]]


== Intervals ==
== Intervals ==
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[[Category:AFDO]]
{{Navbox harmonics}}

Latest revision as of 00:06, 11 October 2026

Harmonics 11–22
Prime factorization 11 (prime)
Dual sharp fifth 17/11 (753.637c)
Dual flat fifth 16/11 (648.682c)

The harmonic segment 11::22 (also harmonics 11–22) consists of harmonics 11 through 22 (11:12:…:22) and spans one octave above the root. Used as a scale, it is also called mode 11 of the harmonic series. The inverse consists of subharmonics 11–22. As 11 is a small odd number, this scale does not contain a perfect fifth above the root, although it does contain a 16/11 subfifth and a 17/11 ultrafifth / inframinor sixth.

Intervals

# Cents Ratio Decimal Interval name Audio
0 0 1/1 1.0000 perfect unison
1 150.63 12/11 1.0909 small whole tone
2 289.21 13/11 1.1818 tridecimal minor third
3 417.51 14/11 1.2727 undecimal major third
4 536.95 15/11 1.3636 undecimal augmented fourth
5 648.68 16/11 1.4545 undecimal subfifth
6 753.64 17/11 1.5455 septendecimal subminor sixth
7 852.59 18/11 1.6364 undecimal neutral sixth
8 946.20 19/11 1.7273 undevicesimal semitwelfth
9 1035.00 20/11 1.8182 undecimal supraminor seventh
10 1119.46 21/11 1.9091 undecimal major seventh
11 1200.00 2/1 2.000 perfect octave
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