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This page presents a novelty topic. It features ideas which are less likely to find practical applications in xenharmonic music. It may contain numbers that are impractically large, exceedingly complex or chosen arbitrarily. Novelty topics are often developed by a single person or a small group. As such, this page may also feature idiosyncratic terms, notations or conceptual frameworks.

7936/7921, a.k.a. the attic comma, is tempered out by the Floor temperament.

Tempering this comma on its own gives the attic temperament, a 2.3.89 subgroup tuning.

Interval information
Ratio 7921/7776
Subgroup monzo 2.3.89 [-5 -5 2
Size in cents 31.98523¢
Name Attic comma
Color name 89oo1
FJS name [math]\text{A1}^{89,89}[/math]
Special properties reduced
Tenney height (log2 nd) 25.8763
Weil height (log2 max(n, d)) 25.9029
Wilson height (sopfr (nd)) 203
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~4.48592 bits
Comma size medium
open this interval in xen-calc