225:270:320:384
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| Harmonics | 225:270:320:384 |
| Subharmonics | 1/(384:320:270:225) |
| Intervals from root | 1/1 – 6/5 – 64/45 – 128/75 |
| Cents from root | 0¢ 316¢ 610¢ 925¢ |
| Step intervals | 6/5, 32/27, 6/5 |
| Step cents | 316¢, 294¢, 316¢ |
| Prime limit | 5 |
| Genus | 33 ⋅ 52 (675) |
| Intervallic odd limit | 75 |
| Otonal odd limit | 225 |
| Utonal odd limit | 225 |
225:270:320:384 is a diminished seventh chord found on viio7 (15⁄8) in the duodene.
It is structurally similar to the 36:45:54:64 dominant seventh chord found on V (3⁄2), stacking on an additional minor third (to make a “dominant ninth”) and dropping the root.