70:90:105:126: Difference between revisions

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{{Infobox Chord|ColorName=ru gu-7 or r,g7}}
{{Infobox Chord|ColorName=ru gu-7 or r,g7}}


'''70:90:105:126''' is the ''subharmonic seventh chord''. It is the inverse of [[6:7:9:10]], the harmonic sixth chord. It can be found by inflecting both [[5/4]] and [[7/4]] of the [[4:5:6:7|harmonic seventh chord]] up by [[36/35]].  
'''70:90:105:126''' is a septimal ''dominant 7th chord.'' It is a type of subharmonic seventh chord, but that term is usually reserved for the simpler [[60:70:84:105|1/(7:6:5:4)]] chord. It is the inverse of [[6:7:9:10]], the harmonic sixth chord. It can be found by inflecting both [[5/4]] and [[7/4]] of the [[4:5:6:7|harmonic seventh chord]] up by [[36/35]].  


[[Category:Dominant seventh chords|##]] <!-- 2-digit number -->
[[Category:Dominant seventh chords|##]] <!-- 2-digit number -->

Revision as of 23:56, 10 March 2026

Chord information
Harmonics 70:90:105:126
Subharmonics 1/(9:7:6:5)
Intervals from root 1/1–9/7–3/2–9/5
Cents from root 0¢–435¢–702¢–1018¢
Step intervals 9/7, 7/6, 6/5
Step cents 435¢, 267¢, 316¢
Color name ru gu-7 or r,g7
Prime limit 7
Genus 32⋅5⋅7 (315)
Intervallic odd limit 9
Otonal odd limit 105
Utonal odd limit 9
Consistent edos (d ≥ 2) 19edo*, 27edo*, 41edo*, 72edo**

70:90:105:126 is a septimal dominant 7th chord. It is a type of subharmonic seventh chord, but that term is usually reserved for the simpler 1/(7:6:5:4) chord. It is the inverse of 6:7:9:10, the harmonic sixth chord. It can be found by inflecting both 5/4 and 7/4 of the harmonic seventh chord up by 36/35.

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