160/81

160/81 is the inversion of the syntonic comma, 81/80. As such, it is very near a full octave. Because "grave" can denote that an interval is lowered by some sort of comma, we can also call this the "classic grave octave." It, being the octave complement of the syntonic comma, can alternatively be given the name "syntonic suboctave"

Interval information

Ratio	160/81
Factorization	25 × 3-4 × 5
Monzo	[5 -4 1⟩
Size in cents	1178.494 ¢
Names	syntonic suboctave, classic grave octave
Color name	y8, yo octave
FJS name	[math]\displaystyle{ \text{P8}^{5} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	13.6618
Weil norm (log2 max(n, d))	14.6439
Wilson norm (sopfr(nd))	27
[sound info]
Open this interval in xen-calc

See also

• 81/80 – its octave complement

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