128/97
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| Ratio | 128/97 |
| Subgroup monzo | 2.97 [7 -1⟩ |
| Size in cents | 480.10459¢ |
| Name | nonacesimoseptimal subharmonic fourth |
| Color name | 97u4 |
| FJS name | [math]\text{P4}_{97}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 13.5999 |
| Weil height (log2 max(n, d)) | 14 |
| Wilson height (sopfr (nd)) | 111 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~4.48489 bits |
| open this interval in xen-calc | |
128/97, the nonacesimoseptimal subharmonic fourth is a narrow fourth very close to that of 5edo, and is the first octave-reduced subharmonic after 4/3 that is (just barely) a diatonic fourth. The diatonic scale it generates is incredibly close to collapsed, with the "minor second" being less than a cent wide.