63/40: Difference between revisions

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The '''narrow minor sixth''' (frequency ratio '''63/40''') is a 7-limit interval which is well approximated in several equal step tunings, most notably [[120edo]] and [[198edo]].
The '''septimal narrow minor sixth''' or '''hemifamity minor sixth''' (frequency ratio '''63/40''') is a 7-limit interval which is well approximated in several equal step tunings, most notably [[198edo]].

Latest revision as of 04:31, 14 April 2025

Interval information
Ratio 63/40
Factorization 2-3 × 32 × 5-1 × 7
Monzo [-3 2 -1 1
Size in cents 786.4222¢
Name narrow minor sixth
Color name zg6, zogu 6th
FJS name [math]\displaystyle{ \text{m6}^{7}_{5} }[/math]
Special properties reduced
Tenney height (log2 nd) 11.2992
Weil height (log2 max(n, d)) 11.9546
Wilson height (sopfr(nd)) 24
Open this interval in xen-calc

The septimal narrow minor sixth or hemifamity minor sixth (frequency ratio 63/40) is a 7-limit interval which is well approximated in several equal step tunings, most notably 198edo.