127/72: Difference between revisions

From Xenharmonic Wiki
Jump to navigation Jump to search
Plumtree (talk | contribs)
mNo edit summary
Plumtree (talk | contribs)
mNo edit summary
Line 1: Line 1:
{{Infobox Interval
{{Infobox Interval
| Name = harmonic/Pythagorean minor seventh meantone
| Name = harmonic/Pythagorean minor seventh meantone
| FJS name = m7^127
| FJS name = m7^{127}
| Color name = 127o7
| Color name = 127o7
}}
}}

Revision as of 11:40, 25 October 2022

Interval information
Ratio 127/72
Subgroup monzo 2.3.127 [-3 -2 1
Size in cents 982.5116¢
Name harmonic/Pythagorean minor seventh meantone
Color name 127o7
FJS name [math]\displaystyle{ \text{m7}^{127} }[/math]
Special properties reduced
Tenney height (log2 nd) 13.1586
Weil height (log2 max(n, d)) 13.9774
Wilson height (sopfr(nd)) 139
Open this interval in xen-calc

In Just Intonation, 127/72 is the frequency ratio between the 127th and the 72th harmonic.

It is the mean between the harmonic seventh and the Pythagorean minor seventh: (7/4 + 16/9)/2 = 127/72.

It can also be calculated from the septimal comma: ((64/63 - 1)/2 + 1)⋅(7/4) = 127/72.