Scheme comma

Interval information

Ratio	14348907/14336000
Factorization	2-14 × 315 × 5-3 × 7-1
Monzo	[-14 15 -3 -1⟩
Size in cents	1.557965¢
Name	scheme comma
Color name	LLrg3-2, Lalarutrigu comma
FJS name	[math]\displaystyle{ \text{m}{-2}_{5,5,5,7} }[/math]
Special properties	reduced
Tenney norm (log2 nd)	47.5476
Weil norm (log2 max(n, d))	47.5489
Wilson norm (sopfr(nd))	95
Comma size	unnoticeable
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The scheme comma is an unnoticeable 7-limit comma measuring about 1.56 cents. It is equal to the difference between the Pythagorean comma and the keema (875/864). This makes it a keemic schisma, from which the name scheme derives. It is also equal to the difference between the schisma (32805/32768) and the ragisma (4375/4374).

Temperaments

Tempering out this comma leads to the scheme temperament.

Etymology

This comma was named by Jerdle in 2025.