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Interval information
Ratio 245/243
Monzo [0 -5 1 2
Size in cents 14.19052
Name(s) sensamagic comma
Color name zzy2, zozoyo 2nd
open this interval in xen-calc

245/243, the sensamagic comma, is a 7-limit small comma of 14.2 cents. It is the amount by which two septimal major thirds (9/7) fall short of a classic major sixth (5/3), or the difference between 28/27 and 36/35.


Tempering it out leads to the sensamagic family of temperaments, where 5/3 is split into two equal parts, each representing 9/7~35/27, and may be extended to represent higher-limit ratios like 13/10, 22/17, etc. It enables sensamagic chords as well.

See also