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Interval information
Ratio 11/5
Factorization 5-1 × 11
Monzo [0 0 -1 0 1
Size in cents 1365.0042¢
Name neutral ninth
Color name 1o9, ilo 9th
FJS name [math]\text{m9}^{11}_{5}[/math]
Tenney height (log2 nd) 5.78136
Weil height (log2 max(n, d)) 6.91886
Wilson height (sopfr (nd)) 16
Harmonic entropy
(Shannon, [math]\sqrt{n\cdot d}[/math])
~4.56977 bits

[sound info]
open this interval in xen-calc

11/5 is the ratio between the 5th and 11th harmonics; one octave above 11/10. It is the all-odd voicing of 11/10 and thus the most consonant voicing. 11/5 is useful as an equivalence interval for "no-twos-or-threes" music as 5/1 proves too wide.

See also