15/11: Difference between revisions
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Userminusone (talk | contribs) No edit summary |
added the color name |
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| Cents = 536.95077 | | Cents = 536.95077 | ||
| Name = undecimal augmented fourth | | Name = undecimal augmented fourth | ||
| Color name = | | Color name = 1uy4, luyo 4th | ||
| FJS name = A4<sup>5</sup><sub>11</sub> | | 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 | ||
Revision as of 04:17, 13 February 2022
| 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.