1861edo

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Revision as of 17:10, 24 April 2023 by Francium (talk | contribs) (Created page with "{{Infobox ET}} {{EDO intro|1861}} == Theory == 1861et tempers out 369140625/369098752, 537109375/536870912 and 3025/3024 in the 11-limit; 1181640625/1181599328, 225000/224...")
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← 1860edo 1861edo 1862edo →
Prime factorization 1861 (prime)
Step size 0.644815 ¢ 
Fifth 1089\1861 (702.203 ¢)
Semitones (A1:m2) 179:138 (115.4 ¢ : 88.98 ¢)
Dual sharp fifth 1089\1861 (702.203 ¢)
Dual flat fifth 1088\1861 (701.558 ¢)
Dual major 2nd 316\1861 (203.761 ¢)
Consistency limit 5
Distinct consistency limit 5

Template:EDO intro

Theory

1861et tempers out 369140625/369098752, 537109375/536870912 and 3025/3024 in the 11-limit; 1181640625/1181599328, 225000/224939, 78125/78078, 1610510000/1610497161, 8859375/8859136, 4096/4095, 196625/196608, 405769/405504, 10549994/10546875 and 91182091/91125000 in the 13-limit.

Odd harmonics

Approximation of odd harmonics in 1861edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23
Error Absolute (¢) +0.248 -0.070 -0.314 -0.149 -0.001 +0.311 +0.178 +0.149 -0.253 -0.066 -0.225
Relative (%) +38.5 -10.8 -48.8 -23.0 -0.2 +48.2 +27.7 +23.2 -39.3 -10.3 -34.9
Steps
(reduced)
2950
(1089)
4321
(599)
5224
(1502)
5899
(316)
6438
(855)
6887
(1304)
7271
(1688)
7607
(163)
7905
(461)
8174
(730)
8418
(974)

Subsets and supersets

1861edo is the 284th prime edo.

Regular temperament properties

Subgroup Comma List Mapping Optimal
8ve Stretch (¢)
Tuning Error
Absolute (¢) Relative (%)
2.3 [2950 -1861 1861 2950] -0.0783 0.0783 12.14
2.3.5 [57 -55 13, [91 -12 -31 1861 2950 4321] -0.0422 0.0818 12.69
2.3.5.7 95703125/95551488, 359661568/358722675, 160163466183/160000000000 1861 2950 4321 5224] -0.0036 0.0973 15.08
2.3.5.7.11 3025/3024, 19712/19683, 26796875/26763264, 102538515387/102400000000 1861 2950 4321 5224 6438] -0.0028 0.0871 13.51
2.3.5.7.11.13 3025/3024, 4096/4095, 4459/4455, 765625/764478, 18302823/18279040 1861 2950 4321 5224 6438 6887] -0.0163 0.0850 13.18
2.3.5.7.11.13.17 1225/1224, 2431/2430, 4096/4095, 4459/4455, 42500/42471, 22000363/21970000 1861 2950 4321 5224 6438 6887 7607] -0.0192 0.0790 12.25