20/11

Interval information

Ratio	20/11
Factorization	22 × 5 × 11-1
Monzo	[2 0 1 0 -1⟩
Size in cents	1034.996¢
Names	small undecimal neutral seventh, undecimal supraminor seventh
Color name	1uy7, luyo 7th
FJS name	[math]\text{M7}^{5}_{11}[/math]
Special properties	reduced
Tenney height (log2 nd)	7.78136
Weil height (log2 max(n, d))	8.64386
Wilson height (sopfr(nd))	20
Harmonic entropy (Shannon, [math]\sqrt{nd}[/math])	~4.23886 bits
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20/11 the small undecimal neutral seventh or undecimal supraminor seventh is an 11-limit interval measuring about 1035 ¢ in size.

Approximation

20/11 is approximated extremely precisely by 80edo and its multiples, with a chain of eighty 20/11's failing to close at the octave by a mere third of a cent, close enough that you could theoretically tune an instrument to 80edo by ear using it if you had the patience.

See also

• 11/10 – its octave complement
• Gallery of just intervals