12:14:18:21
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| Names | subminor seventh, septimal minor seventh |
| Harmonics | 12:14:18:21 |
| Subharmonics | 1/(21:18:14:12) |
| Intervals from root | 1/1 – 7/6 – 3/2 – 7/4 |
| Cents from root | 0¢ 267¢ 702¢ 969¢ |
| Step intervals | 7/6, 9/7, 7/6 |
| Step cents | 267¢, 435¢, 267¢ |
| Prime limit | 7 |
| Genus | 32 ⋅ 7 (63) |
| Intervallic odd limit | 9 |
| Otonal odd limit | 21 |
| Utonal odd limit | 21 |
12:14:18:21, a subminor seventh chord or septimal minor seventh chord, is an anomalous saturated suspension in the 9-odd-limit.
| Ratio | 1/1 | 7/6 | 3/2 | 7/4 |
|---|---|---|---|---|
| Cents | 0.00 | 266.87 | 701.96 | 968.83 |
| Sound [info] |
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Todo: This chord may be closely connected to 7-limit interpretations of the Blues scale. |