387edo
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Prime factorization
32 × 43
Step size
3.10078¢
Fifth
226\387 (700.775¢)
Semitones (A1:m2)
34:31 (105.4¢ : 96.12¢)
Dual sharp fifth
227\387 (703.876¢)
Dual flat fifth
226\387 (700.775¢)
Dual major 2nd
66\387 (204.651¢) (→22\129)
Consistency limit
3
Distinct consistency limit
3
| ← 386edo | 387edo | 388edo → |
387 equal divisions of the octave (abbreviated 387edo or 387ed2), also called 387-tone equal temperament (387tet) or 387 equal temperament (387et) when viewed under a regular temperament perspective, is the tuning system that divides the octave into 387 equal parts of about 3.1 ¢ each. Each step represents a frequency ratio of 21/387, or the 387th root of 2.
Harmonics
| Harmonic | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | -1.18 | +1.28 | -1.38 | +0.74 | +0.62 | -0.22 | +0.10 | +0.47 | +0.16 | +0.54 | +1.18 |
| Relative (%) | -38.0 | +41.4 | -44.6 | +23.9 | +20.0 | -7.0 | +3.3 | +15.2 | +5.2 | +17.3 | +38.2 | |
| Steps (reduced) |
613 (226) |
899 (125) |
1086 (312) |
1227 (66) |
1339 (178) |
1432 (271) |
1512 (351) |
1582 (34) |
1644 (96) |
1700 (152) |
1751 (203) | |
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