Decovulture comma

Interval information

Ratio	67108864/66976875
Factorization	226 × 3-7 × 5-4 × 7-2
Monzo	[26 -7 -4 -2⟩
Size in cents	3.408326¢
Name	Decovulture comma
FJS name	[math]\displaystyle{ \text{dd2}_{5,5,5,5,7,7} }[/math]
Special properties	reduced, reduced subharmonic
Tenney norm (log2 nd)	51.9972
Weil norm (log2 max(n, d))	52
Wilson norm (sopfr(nd))	107
Comma size	unnoticeable
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The decovulture comma (monzo: [26 -7 -4 -2⟩, ratio: 67108864/66976875) is an unnoticeable comma in the 7-limit with a size of about 3.41 cents. It is the difference between 49/48 and a stack of two diaschismas.

It factors into (5632/5625)⋅(131072/130977) in the 11-limit, and (676/675)⋅(4096/4095)² in the 2.3.5.7.13 subgroup.

Temperaments

Tempering out this comma in the 7-limit leads to the decovulture temperament.

Etymology

This comma was named by Xenllium in 2021 as a contraction of decoid and vulture, two of the rank-2 temperaments tempering it out.