873edo
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Prime factorization
32 × 97
Step size
1.37457¢
Fifth
511\873 (702.405¢)
Semitones (A1:m2)
85:64 (116.8¢ : 87.97¢)
Consistency limit
7
Distinct consistency limit
7
| ← 872edo | 873edo | 874edo → |
873 equal divisions of the octave (abbreviated 873edo or 873ed2), also called 873-tone equal temperament (873tet) or 873 equal temperament (873et) when viewed under a regular temperament perspective, is the tuning system that divides the octave into 873 equal parts of about 1.37 ¢ each. Each step represents a frequency ratio of 21/873, or the 873rd root of 2.
873edo is consistent to the 7-odd-limit, but the error of harmonic 3 is quite large. The equal temperament is most notable for tempering out the amity comma, 1600000/1594323, in the 5-limit, providing the optimal patent val for it.
Odd harmonics
| Harmonic | 3 | 5 | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | absolute (¢) | +0.450 | -0.059 | +0.246 | -0.474 | -0.115 | -0.665 | +0.391 | -0.488 | -0.606 | -0.678 | -0.096 |
| relative (%) | +33 | -4 | +18 | -34 | -8 | -48 | +28 | -36 | -44 | -49 | -7 | |
| Steps (reduced) |
1384 (511) |
2027 (281) |
2451 (705) |
2767 (148) |
3020 (401) |
3230 (611) |
3411 (792) |
3568 (76) |
3708 (216) |
3834 (342) |
3949 (457) | |
Subsets and supersets
Since 873 factors into 32 × 97, 873edo has subset edos 3, 9, 97, and 291.