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{| | {{Infobox Interval | ||
| Icon = [[File:glyph_9_7.png|124px]] <small><br/>[[JI glyphs|JI glyph]]</small> | |||
| Ratio = 9/7 | |||
| | | Monzo = 0 2 0 -1 | ||
| | | | Cents = 435.08410 | ||
| Name = supermajor third | |||
| Sound = jid_9_7_pluck_adu_dr220.mp3 | |||
| Color name = | |||
}} | |||
In [[Just intonation|Just Intonation]], 9/7 is a supermajor third of approximately 435.1¢, characteristic of [[7-limit]] and beyond. On its own, it has a very strident quality, but in the context of a chord, it can sound perfectly consonant. The 9-limit hexad 4:5:6:7:8:9 includes a septimal supermajor third between the 7th and the 9th. The interval has an interesting neutral quality to it similar to the way 9/8 behaves as ratios of nine all share this quality. | |||
A just chord can be built with this wide third in place of the more traditional [[5/4]]. This supermajor triad would be 14:18:21. This triad can be very effective in music, but in this context, the modern ear accustomed to 12edo thirds of 400¢ is likely to hear 9/7 as a mistuned major third instead of a new class of interval in its own right. Because 9/7 is a ratio of 9, it shares sonority qualities with [[9/8]] much more than 5/4. Chords such as the [[9-limit]] hexad above and subsets of it give more opportunity for 9/7 to be heard as consonant. | |||
[[ | == See also == | ||
* [[Gallery of Just Intervals]] | |||
* [http://en.wikipedia.org/wiki/Septimal_major_third Septimal major third] (Wikipedia) | |||
[[Category:7-limit]] | [[Category:7-limit]] | ||
[[Category:interval]] | [[Category:interval]] | ||
Revision as of 22:39, 17 October 2018
| Interval information |
[sound info]
In Just Intonation, 9/7 is a supermajor third of approximately 435.1¢, characteristic of 7-limit and beyond. On its own, it has a very strident quality, but in the context of a chord, it can sound perfectly consonant. The 9-limit hexad 4:5:6:7:8:9 includes a septimal supermajor third between the 7th and the 9th. The interval has an interesting neutral quality to it similar to the way 9/8 behaves as ratios of nine all share this quality.
A just chord can be built with this wide third in place of the more traditional 5/4. This supermajor triad would be 14:18:21. This triad can be very effective in music, but in this context, the modern ear accustomed to 12edo thirds of 400¢ is likely to hear 9/7 as a mistuned major third instead of a new class of interval in its own right. Because 9/7 is a ratio of 9, it shares sonority qualities with 9/8 much more than 5/4. Chords such as the 9-limit hexad above and subsets of it give more opportunity for 9/7 to be heard as consonant.
See also
- Gallery of Just Intervals
- Septimal major third (Wikipedia)