13ed9/4
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Prime factorization
13 (prime)
Step size
107.993¢
Octave
11\13ed9/4 (1187.92¢)
(semiconvergent)
Twelfth
18\13ed9/4 (1943.88¢)
Consistency limit
2
Distinct consistency limit
2
| ← 12ed9/4 | 13ed9/4 | 14ed9/4 → |
(semiconvergent)
13ed9/4 is the equal division of 9/4 into 13 parts.
Scale tree
Ed9/4 scales can be approximated in EDOs by subdividing their approximations of 9/4.
| Major ninth | Period | Notes | |||
|---|---|---|---|---|---|
| 9\8 | 103.846 | Intense Phrygian-Soft Aeolian mode ends, Soft Aeolian mode begins | |||
| 17\15 | 104.615 | ||||
| 8\7 | 105.4945 | Soft Aeolian mode ends, Flattone Aeolian mode begins | |||
| 15\13 | 106.509 | ||||
| 22\19 | 106.883 | Flattone Aeolian mode ends, Meantone Aeolian mode begins | |||
| 29\25 | 107.077 | ||||
| 7\6 | 107.692 | Meantone Aeolian mode ends, Superpyth Intense Aeolian mode begins | |||
| 20\17 | 108.597 | ||||
| 13\11 | 109.09 | Superpyth Intense Aeolian mode ends, Ultrapyth Intense Aeolian mode begins | |||
| 19\16 | 109.615 | ||||
| 6\5 | 110.769 | Ultrapyth Intense Aeolian mode ends | |||