1573/1568

1573/1568, the lambeth comma, is a 13-limit (or 2.7.11.13 subgroup) small comma measuring about 5.5 cents. It is the amount by which a stack of two 14/11's falls short of 13/8.

Interval information

Ratio	1573/1568
Factorization	2-5 × 7-2 × 112 × 13
Monzo	[-5 0 0 -2 2 1⟩
Size in cents	5.511734¢
Name	lambeth comma
FJS name	[math]\displaystyle{ \text{M}{-2}^{11,11,13}_{7,7} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	21.234
Weil norm (log2 max(n, d))	21.2386
Wilson norm (sopfr(nd))	59
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The name comes from the place where Flora Canou dwelled when she named the comma in January 2022.

Temperaments

Tempering it out leads to a form of the lambeth temperament, and enables lambeth chords, the essentially tempered chords in the 13-odd-limit.

See also

• Small comma