15/11: Difference between revisions
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| Name = undecimal augmented fourth | | Name = undecimal augmented fourth | ||
| Color name = | | Color name = | ||
| FJS name = A4<sup>5</sup><sub>11</sub> | |||
| Sound = jid_15_11_pluck_adu_dr220.mp3 | | Sound = jid_15_11_pluck_adu_dr220.mp3 | ||
}} | }} | ||
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== See also == | == See also == | ||
* [[22/15]] – its [[octave complement]] | |||
* [[11/10]] – its [[fifth complement]] | |||
* [[Gallery of just intervals]] | * [[Gallery of just intervals]] | ||
[[Category:11-limit]] | [[Category:11-limit]] | ||
[[Category:Interval ratio]] | [[Category:Interval ratio]] | ||
[[Category:Just interval]] | [[Category:Just interval]] | ||
[[Category:Fourth]] | |||
[[Category:Superfourth]] | [[Category:Superfourth]] | ||
[[Category:Listen]] | [[Category:Listen]] | ||
[[Category:Over-11]] | [[Category:Over-11]] | ||
Revision as of 07:40, 20 September 2020
| Interval information |
[sound info]
The undecimal augmented fourth, or 15/11, is the difference between the 11th and 15th partials of the harmonic series. It is 536.95 cents wide, exactly 45/44 larger than a perfect fourth, and almost exactly a sixth-tone sharper than a 12edo fourth. It is narrower than 11/8 by exactly 121/120. 15/11 can be called a superfourth, as it falls between the interval categories of perfect fourth and tritone. 4 steps of 9edo is an excellent approximation for 15/11.