64/61
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| Ratio | 64/61 |
| Subgroup monzo | 2.61 [6 -1⟩ |
| Size in cents | 83.115195¢ |
| Name | harry minor semitone |
| Color name | 61u2, siwu 2nd |
| FJS name | [math]\text{m2}_{61}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 11.9307 |
| Weil height (log2 max(n, d)) | 12 |
| Wilson height (sopfr (nd)) | 73 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~4.67969 bits |
[sound info] | |
| open this interval in xen-calc | |
64/61 = 26 ⋅ 61−1, the harry minor semitone, makes for a good tuning for harry temperament, and in particular is only 0.001 cents flat of the POTE generator for 13-limit harry. It also makes for an excellent tuning for the generator of tritikleismic temperament; hence, harry consists of two parallel tracks of 64/61 steps and tritikleismic of three parallel tracks. As a fraction of an octave 64/61 falls between 9\130 and 7\101. It can also be described as the octave-reduced 61st subharmonic.