27/23: Difference between revisions

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This is the only source which calls it an A2, even in FJS it's not an A2. There is no reason to call this an A2 except for septimal meantone having 7/6 as A2 (and this isn't even 7-limit).
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'''27/23''', the '''vicesimotertial minor third''', is a [[23-limit]] interval. It is flat of the [[32/27|Pythagorean minor third]] by a vicesimotertial formal comma, [[736/729]].
== Approximation ==
{{Interval edo approximation|27/23}}
== See also ==
* [[46/27]] – its [[octave complement]]
* [[23/18]] – its [[fifth complement]]


'''27/23''', the '''vicesimotertial minor third''', is a [[23-limit]] interval.
{{Stub}}
[[Category:Third]]
[[Category:Minor third]]

Latest revision as of 13:01, 3 November 2025

Interval information
Ratio 27/23
Subgroup monzo 3.23 [3 -1
Size in cents 277.5907¢
Name vicesimotertial minor third
Color name twethu 2nd, 23u2
FJS name [math]\displaystyle{ \text{m3}_{23} }[/math]
Special properties reduced
Tenney norm (log2 nd) 9.27845
Weil norm (log2 max(n, d)) 9.50978
Wilson norm (sopfr(nd)) 32
Open this interval in xen-calc

27/23, the vicesimotertial minor third, is a 23-limit interval. It is flat of the Pythagorean minor third by a vicesimotertial formal comma, 736/729.

Approximation

Edo approximations for 27/23 (277.59 ¢)
≤ 80edo, relative error ≤ 10%
Edo Step size Cents (¢) Absolute error (¢) Relative error (%)
4 1\4 300.00 +22.41 +7.47
9 2\9 266.67 -10.92 -8.19
13 3\13 276.92 -0.67 -0.72
17 4\17 282.35 +4.76 +6.75
22 5\22 272.73 -4.86 -8.92
26 6\26 276.92 -0.67 -1.45
30 7\30 280.00 +2.41 +6.02
35 8\35 274.29 -3.30 -9.64
39 9\39 276.92 -0.67 -2.17
43 10\43 279.07 +1.48 +5.30
52 12\52 276.92 -0.67 -2.89
56 13\56 278.57 +0.98 +4.58
65 15\65 276.92 -0.67 -3.62
69 16\69 278.26 +0.67 +3.85
78 18\78 276.92 -0.67 -4.34

See also

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