21/13: Difference between revisions
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m Normalising usage of Infobox Interval |
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{{Infobox Interval | {{Infobox Interval | ||
| Name = tridecimal supraminor sixth | | Name = tridecimal supraminor sixth | ||
| Color name = thuzo 6th, 3uz6 | | Color name = thuzo 6th, 3uz6 | ||
| Sound = ji-21-13-csound-foscil-220hz.mp3 | | Sound = ji-21-13-csound-foscil-220hz.mp3 | ||
}} | }} | ||
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* [[Gallery of just intervals]] | * [[Gallery of just intervals]] | ||
[[Category:Sixth]] | [[Category:Sixth]] | ||
[[Category:Supraminor sixth]] | [[Category:Supraminor sixth]] | ||
[[Category:Golden ratio approximations]] | [[Category:Golden ratio approximations]] | ||
Revision as of 13:01, 25 October 2022
| Interval information |
[sound info]
21/13, the tridecimal supraminor sixth, is ca. 830 cents in size. It has a very good approximation in 13edo.
This interval is a ratio of two consecutive Fibonacci numbers, therefore it approximates the golden ratio, specifically acoustic phi. In this case, 21/13 is ~2.8 ¢ flat of the golden ratio.