676/675

Interval information

Ratio	676/675
Factorization	22 × 3-3 × 5-2 × 132
Monzo	[2 -3 -2 0 0 2⟩
Size in cents	2.562893 ¢
Names	island comma, parizeksma
Color name	3oogg2, bithogu 2nd, Bithogu comma
FJS name	[math]\displaystyle{ \text{dd2}^{13,13}_{5,5} }[/math]
Special properties	square superparticular, reduced
Tenney norm (log2 nd)	18.7996
Weil norm (log2 max(n, d))	18.8018
Wilson norm (sopfr(nd))	49
Comma size	unnoticeable
S-expressions	S26, S13/S15
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676/675, otherwise known as the island comma, or the parizeksma, is the difference between two 15/13's and a 4/3 perfect fourth, and also between 26/25 and 27/26. Tempering this comma out divides the perfect fourth into two equal halves, making island chords possible.

See also

• Island chords
• The Archipelago
• Unnoticeable comma
• List of superparticular intervals