14:18:21: Difference between revisions

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{{Infobox Chord|ColorName=ru or r}}
{{Infobox chord|ColorName=ru or r}}


'''14:18:21''', the ''supermajor triad'' or ''septimal major triad'', is a triad in the [[7-limit]] sometimes used in place of a [[major triad]]. It is the inversion of [[6:7:9]], the septimal minor triad or subminor triad. The supermajor triad, unlike the [[4:5:6]] major triad, is [[utonal]]. Due to the more complex [[9/7]] interval above the root, it may sound less consonant than 6:7:9, similarly to how the [[10:12:15]] minor triad is generally considered less consonant than [[4:5:6]].
'''14:18:21''', the ''supermajor triad'' or ''septimal major triad'', is a triad in the [[7-limit]] sometimes used in place of a [[major triad]]. It is the inversion of [[6:7:9]], the septimal minor triad or subminor triad. The supermajor triad, unlike the [[4:5:6]] major triad, is [[utonal]]. Due to the more complex [[9/7]] interval above the root, it may sound less consonant than 6:7:9, similarly to how the [[10:12:15]] minor triad is generally considered less consonant than [[4:5:6]].
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* [[70:90:105:126|70:90:105:126 or 1/(9:7:6:5)]], the ''subharmonic seventh chord'' – adds [[9/5]]
* [[70:90:105:126|70:90:105:126 or 1/(9:7:6:5)]], the ''subharmonic seventh chord'' – adds [[9/5]]
* [[28:36:42:49]], a type of [[dominant seventh chord]] – adds [[7/4]]
* [[28:36:42:49]], a type of [[dominant seventh chord]] – adds [[7/4]]
* [[14:18:21:24]] – adds [[12/7]]
* [[14:18:21:27]] – adds [[27/14]]
* [[14:18:21:27]] – adds [[27/14]]


[[Category:Major triads|##]] <!-- 2-digit first number -->
[[Category:Major triads|##]] <!-- 2-digit first number -->

Revision as of 10:09, 30 December 2025

Chord information
Harmonics 14:18:21
Subharmonics 1/(9:7:6)
Intervals from root 1/19/73/2
Cents from root 435¢702¢
Step intervals 9/7, 7/6
Step cents 435¢, 267¢
Color name ru or r
Prime limit 7
Genus 327 (63)
Intervallic odd limit 9
Otonal odd limit 21
Utonal odd limit 9
Consistent edos (d ≥ 2) 5edo*, 14edo*, 17edo*, 19edo*, …

14:18:21, the supermajor triad or septimal major triad, is a triad in the 7-limit sometimes used in place of a major triad. It is the inversion of 6:7:9, the septimal minor triad or subminor triad. The supermajor triad, unlike the 4:5:6 major triad, is utonal. Due to the more complex 9/7 interval above the root, it may sound less consonant than 6:7:9, similarly to how the 10:12:15 minor triad is generally considered less consonant than 4:5:6.

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