9/5: Difference between revisions
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Added Wikipedia box, added alternate name, misc. edits, categories |
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{{Infobox Interval | {{Infobox Interval | ||
| Ratio = 9/5 | | Ratio = 9/5 | ||
| Monzo = 0 2 -1 | | Monzo = 0 2 -1 | ||
| Cents = 1017.5963 | | Cents = 1017.5963 | ||
| Name = just minor seventh | | Name = just minor seventh, <br>classic minor seventh | ||
| Color name = g7, gu 7th | | Color name = g7, gu 7th | ||
| FJS name = m7<sub>5</sub> | | FJS name = m7<sub>5</sub> | ||
| Sound = jid_9_5_pluck_adu_dr220.mp3 | | Sound = jid_9_5_pluck_adu_dr220.mp3 | ||
}} | }} | ||
{{Wikipedia|Minor seventh}} | |||
'''9/5''' is a treated as a consonance in [[5-limit]] [[just intonation]], forming a part of such chords such as the 1-6/5-3/2-9/5 minor seventh chord, and the supermajor tetrad, 1-9/7-3/2-9/5 in the 7-limit. | '''9/5''' is a treated as a consonance in [[5-limit]] [[just intonation]], forming a part of such chords such as the 1-6/5-3/2-9/5 minor seventh chord, and the supermajor tetrad, 1-9/7-3/2-9/5 in the 7-limit. | ||
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== See also == | == See also == | ||
* [[10/9]] – its [[octave complement]] | * [[10/9]] – its [[octave complement]] | ||
* [[Gallery of | * [[Gallery of just intervals]] | ||
[[Category:5-limit]] | [[Category:5-limit]] | ||
[[Category:Seventh]] | [[Category:Seventh]] | ||
[[Category:Minor seventh]] | [[Category:Minor seventh]] | ||
[[Category:Over-5]] | [[Category:Over-5]] | ||
{{todo|expand|review interval name}} | |||
Revision as of 04:59, 22 January 2022
| Interval information |
classic minor seventh
[sound info]
9/5 is a treated as a consonance in 5-limit just intonation, forming a part of such chords such as the 1-6/5-3/2-9/5 minor seventh chord, and the supermajor tetrad, 1-9/7-3/2-9/5 in the 7-limit.
Coincidentally, the ratio between a common "alternative" tuning frequency (A432) and the most common AC electrical frequency (60hz) is exactly 36/5, two octaves above 9/5. This is notably a more consonant interval than the 11/6 formed by the more common tuning frequency of A440, which may lead to a noticeable improvement in consonance when electrically powered instruments or amplifiers are interfered with by AC power.