180/161

Interval information

Ratio	180/161
Subgroup monzo	2.3.5.7.23 [2 2 1 -1 -1⟩
Size in cents	193.1235¢
Name	inverse-arithmetic meantone
Color name	23ury1, twethuruyo unison
FJS name	[math]\displaystyle{ \text{M2}^{5}_{7,23} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	14.8228
Weil norm (log2 max(n, d))	14.9837
Wilson norm (sopfr(nd))	45
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180/161, the inverse-arithmetic meantone, is a 23-limit ratio measuring about 193 cents. It is the inverse-arithmetic mean of 9/8, the Pythagorean whole tone, and 10/9, the classical whole tone, hence the name.