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Interval information
Ratio 540/539
Monzo [2 3 1 -2 -1
Size in cents 3.20896
Name(s) swetisma
open this interval in xen-calc

540/539, the swetisma, is a comma in the 11-limit, equal to (15/11)/(7/6)2, to (12/11)(15/14)/(7/6) or to (99/98)/(121/120). Thus, tempering any two of 99/98, 121/120 and 540/539 will result in the third of the three being tempered, resulting in the rank-3 temperament Big Brother. More generally, tempering 540/539 leads to swetismic temperaments.

See also