140/81: Difference between revisions
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Created page with "{{Infobox Interval | Ratio = 140/81 | Monzo = 2 -4 1 1 | Cents = 947.3196 | Name = septimal semidiminished seventh, <br>septimal inframinor seventh | Color name = zy7, zoyo 7t..." |
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| Monzo = 2 -4 1 1 | | Monzo = 2 -4 1 1 | ||
| Cents = 947.3196 | | Cents = 947.3196 | ||
| Name = septimal semidiminished seventh, <br>septimal inframinor seventh | | Name = septimal semidiminished seventh, <br> septimal inframinor seventh | ||
| Color name = zy7, zoyo 7th | | Color name = zy7, zoyo 7th | ||
| FJS name = m7<sup>35</sup> | |||
| Sound = | | Sound = | ||
}} | }} | ||
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== See also == | == See also == | ||
* [[81/70]] | * [[81/70]] – its [[octave complement]] | ||
* [[Gallery of just intervals]] | * [[Gallery of just intervals]] | ||
Revision as of 20:17, 27 September 2020
| Interval information |
septimal inframinor seventh
140/81, the septimal semidiminished seventh or septimal inframinor seventh is a 7-limit interseptimal ratio of about 947 cents. It is sharp of a supermajor sixth 12/7 by a sensamagic comma 245/243, and flat of a minor seventh 16/9 by a septimal quartertone 36/35.
It is also sharp of a major sixth 5/3 by a subminor second 28/27. For this fact it is useful in the Canovian chord and provides the function of a voice leading down to the major sixth.
The interval is so perfectly approximated by 19-edo, with an error of 0.05 cents. There are a number of edos that do this equally well, 171-edo to name one. The first edo that does this better than 19-edo with patent val is 660-edo.