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Interval information
Ratio 21/13
Monzo [0 1 0 1 0 -1
Size in cents 830.25325
Name(s) tridecimal supraminor sixth
Color name thuzo 6th, 3uz6
FJS name M6713

[sound info]
open this interval in xen-calc

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. In this case, 21/13 is ~2.8 ¢ flat of the golden ratio.

See also