28/25
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| Ratio | 28/25 |
| Factorization | 22 × 5-2 × 7 |
| Monzo | [2 0 -2 1⟩ |
| Size in cents | 196.19848¢ |
| Names | (septimal) middle major second, (septimal) middle whole tone |
| Color name | zgg3, zogugu 3rd |
| FJS name | [math]\text{d3}^{7}_{5,5}[/math] |
| Special properties | reduced |
| Tenney height (log2 nd) | 9.45121 |
| Weil height (log2 max(n, d)) | 9.61471 |
| Wilson height (sopfr (nd)) | 21 |
| Harmonic entropy (Shannon, [math]\sqrt{nd}[/math]) |
~4.20212 bits |
[sound info] | |
| open this interval in xen-calc | |
28/25, the (septimal) middle whole tone, is the interval between 5/4 and 7/5, and is intermediate in size between 10/9, of which it is 126/125 sharp, and 9/8, of which it is 225/224 flat. It's actually the mediant of 19/17 and 9/8. A meantone where the tone is tuned to be exactly 28/25 has a fifth of size 2√14/5, or 698.099 ¢.
See also
- 25/14 – its octave complement
- 29/26 – a co-mediant interval
- Gallery of just intervals
- 25-odd-limit