243/224

Interval information

Ratio	243/224
Factorization	2-5 × 35 × 7-1
Monzo	[-5 5 0 -1⟩
Size in cents	140.9491¢
Name	septimal subtone
Color name	Lr1, laru unison
FJS name	[math]\displaystyle{ \text{A1}_{7} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	15.7322
Weil norm (log2 max(n, d))	15.8496
Wilson norm (sopfr(nd))	32
Comma size	large
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243/224, the septimal subtone, is 64/63 sharp of 2187/2048. In the 13-limit, it is 729/728 (2.4 ¢) sharp of 13/12. 2\17 is a good approximation to it. It is also a large comma equating five fifths (3/2) with the 7th harmonic.

See also

• Gallery of just intervals