25/21
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| Ratio | 25/21 |
| Factorization | 3-1 × 52 × 7-1 |
| Monzo | [0 -1 2 -1⟩ |
| Size in cents | 301.84652¢ |
| Name | quasi-tempered minor third |
| Color name | ryy2, ruyoyo 2nd |
| FJS name | [math]\text{A2}^{5,5}_{7}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 9.03617 |
| Weil height (log2 max(n, d)) | 9.28771 |
| Wilson height (sopfr (nd)) | 20 |
| Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~4.52834 bits |
[sound info] | |
| open this interval in xen-calc | |
25/21, the quasi-tempered minor third, is the interval between 6/5 and 10/7, and also 7/5 and 5/3. It is 126/125 flat of 6/5, and tempering 126/125 out makes the 1-6/5-10/7 triad into a diminished triad where two minor thirds make up a tritone. It is extremely close to 3 steps of 12edo (300 cents).
See also
- 42/25 - its octave complement
- 63/50 - its fifth complement
- Gallery of just intervals
- File:Ji-25-21-csound-foscil-220hz.mp3 - another sound example