20:25:30:36: Difference between revisions
reduce jargon; some of it is redundant with the chord infobox anyway |
mNo edit summary |
||
| (2 intermediate revisions by one other user not shown) | |||
| Line 1: | Line 1: | ||
{{Infobox Chord|20:25:30:36}} | {{Infobox Chord|20:25:30:36|ColorName=yo gu-7 or y,g7}} | ||
'''20:25:30:36''' is a ''major-minor seventh chord'', sometimes considered a form of [[dominant seventh chord]]. It combines a [[5/4]] major third with the [[consonant]] [[9/5]] seventh that would be found in a [[10:12:15:18|minor seventh chord]] on the same root, creating a [[36/25]] tritone between the two. | '''20:25:30:36''' is a ''major-minor seventh chord'', sometimes considered a form of [[dominant seventh chord]]. It combines a [[5/4]] major third with the [[consonant]] [[9/5]] seventh that would be found in a [[10:12:15:18|minor seventh chord]] on the same root, creating a [[36/25]] tritone between the two. | ||
| Line 7: | Line 7: | ||
In the [[septimal meantone]] tuning of this chord, the ~36/25 tritone is equated with the more consonant interval [[10/7]], and the major-minor seventh chord becomes an [[essentially tempered chord]] in the [[9-odd-limit]]. | In the [[septimal meantone]] tuning of this chord, the ~36/25 tritone is equated with the more consonant interval [[10/7]], and the major-minor seventh chord becomes an [[essentially tempered chord]] in the [[9-odd-limit]]. | ||
If [[128/125]] is tempered out, this chord is tuned identically to both [[256:320:375:450]] and [[128:160:192:225]]. | |||
[[Category:Dominant seventh chords|##]] <!-- 2-digit first number --> | [[Category:Dominant seventh chords|##]] <!-- 2-digit first number --> | ||
Latest revision as of 06:04, 4 December 2024
| Chord information |
20:25:30:36 is a major-minor seventh chord, sometimes considered a form of dominant seventh chord. It combines a 5/4 major third with the consonant 9/5 seventh that would be found in a minor seventh chord on the same root, creating a 36/25 tritone between the two.
The major-minor seventh chord is found rooted at the I (1⁄1) and IV (4⁄3) of the duodene.
In the meantone tuning of this chord, the ~9/5 seventh is equated with ~16/9, making it equivalent to the meantone tuning of 36:45:54:64.
In the septimal meantone tuning of this chord, the ~36/25 tritone is equated with the more consonant interval 10/7, and the major-minor seventh chord becomes an essentially tempered chord in the 9-odd-limit.
If 128/125 is tempered out, this chord is tuned identically to both 256:320:375:450 and 128:160:192:225.