540/539

Interval information

Ratio	540/539
Factorization	22 × 33 × 5 × 7-2 × 11-1
Monzo	[2 3 1 -2 -1⟩
Size in cents	3.208961¢
Name	swetisma
FJS name	[math]\displaystyle{ \text{d}{-2}^{5}_{7,7,11} }[/math]
Special properties	superparticular, reduced
Tenney height (log2 nd)	18.151
Weil height (log2 max(n, d))	18.1536
Wilson height (sopfr(nd))	43
Open this interval in xen-calc

540/539, the swetisma, is a comma in the 11-limit, equal to (15/11)/(7/6)², 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

• Unnoticeable comma