20:25:30:36: Difference between revisions
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remove “Essentially tempered chords” category: the JI chord itself is not an essentially tempered chord, it just corresponds to one |
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In [[Meantone_family#Septimal_meantone|septimal meantone]], 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 [[Meantone_family#Septimal_meantone|septimal meantone]], 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]]. | ||
[[Category:Dominant seventh chords]] | [[Category:Dominant seventh chords|##]] <!-- 2-digit first number --> | ||
Revision as of 04:27, 20 August 2024
| Chord information |
20:25:30:36, a major-minor seventh chord, is a tetrad in 5-limit harmony, 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 Ptolemaic 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 septimal meantone, 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.