28/25
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Ratio | 28/25 |
Factorization | 2^{2} × 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 (log_{2} nd) | 9.45121 |
Weil height (log_{2} max(n, d)) | 9.61471 |
Wilson height (sopfr (nd)) | 21 |
Harmonic entropy (Shannon, [math]\sqrt{n\cdot d}[/math]) |
~4.57033 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