From Xenharmonic Wiki
Jump to navigation Jump to search
Interval information
Ratio 686/675
Factorization 2 × 3-3 × 5-2 × 73
Monzo [1 -3 -2 3
Size in cents 27.985289¢
Names sengic comma,
senga comma
Color name z3gg3, Trizo-agugu comma
FJS name [math]\text{dd3}^{7,7,7}_{5,5}[/math]
Special properties reduced
Tenney height (log2 n⋅d) 18.8208
Weil height (max(n, d)) 686
Benedetti height (n⋅d) 463050
Harmonic entropy
(Shannon, [math]\sqrt{n\cdot d}[/math])
~4.29886 bits
Comma size small
S-expression S13 * S142
open this interval in xen-calc

The interval of 686/675, the senga comma or sengic comma is a 7-limit small comma. It pops up as the difference between a stack of three 7/6s and a stack of two 5/4s. It is tempered out in temperaments of the sengic family.