25/18
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| Ratio | 25/18 |
| Factorization | 2-1 × 3-2 × 52 |
| Monzo | [-1 -2 2⟩ |
| Size in cents | 568.71743¢ |
| Names | classic(al) augmented fourth, diptolemaic augmented fourth |
| Color name | yy4, yoyo 4th |
| FJS name | [math]\text{A4}^{5,5}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 8.81378 |
| Weil height (log2 max(n, d)) | 9.28771 |
| Wilson height (sopfr (nd)) | 18 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~4.55279 bits |
[sound info] | |
| open this interval in xen-calc | |
25/18, the classic(al) augmented fourth or diptolemaic augmented fourth, is a 5-limit tritone. It is the interval between 6/5 and 5/3 or 9/5 and 5/2 respectively. It is 325/324 (5.3 cents) sharp of 18/13