210edo

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Revision as of 05:12, 19 October 2023 by Francium (talk | contribs) (Rank-2 temperaments: typo)
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← 209edo 210edo 211edo →
Prime factorization 2 × 3 × 5 × 7
Step size 5.71429 ¢ 
Fifth 123\210 (702.857 ¢) (→ 41\70)
Semitones (A1:m2) 21:15 (120 ¢ : 85.71 ¢)
Consistency limit 9
Distinct consistency limit 9

Template:EDO intro

Theory

210et tempers out 67108864/66430125 (misty comma) and 30958682112/30517578125 (trisedodge comma) in the 5-limit; 3136/3125, 5120/5103, and 118098/117649 in the 7-limit. It is consistent to the 7-limit, but there is a sharp tendency for harmonics 3, 5, and 7. Using the patent val, it tempers out 176/175, 1375/1372, 8019/8000, and 41503/41472 in the 11-limit; 351/350, 352/351, 847/845, 2197/2187, and 16900/16807 in the 13-limit. Using the 210e val, it tempers out 540/539, 4000/3993, 6912/6875, and 15488/15435 in the 11-limit; 351/350, 364/363, 1001/1000, 2197/2187, and 3584/3575 in the 13-limit.

Odd harmonics

Approximation of odd harmonics in 210edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23
Error Absolute (¢) +0.90 +2.26 +2.60 +1.80 -2.75 -0.53 -2.55 -2.10 -0.37 -2.21 +0.30
Relative (%) +15.8 +39.5 +45.5 +31.6 -48.1 -9.2 -44.7 -36.7 -6.5 -38.7 +5.2
Steps
(reduced)
333
(123)
488
(68)
590
(170)
666
(36)
726
(96)
777
(147)
820
(190)
858
(18)
892
(52)
922
(82)
950
(110)

Subsets and supersets

210edo factors into 2 × 3 × 5 × 7, with subset edos 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, and 105.

Regular temperament properties

Subgroup Comma List Mapping Optimal
8ve Stretch (¢)
Tuning Error
Absolute (¢) Relative (%)
2.3 [111 -70 210 333] -0.2846 0.2845 4.98
2.3.5 [26 -12 -3, [19 10 -15 210 333 488] -0.5138 0.3987 6.98
2.3.5.7 3136/3125, 5120/5103, 118098/117649 210 333 488 590] -0.6170 0.3888 6.80

Rank-2 temperaments

Table of rank-2 temperaments by generator
Periods
per 8ve
Generator
(reduced)
Cents
(reduced)
Associated
ratio
Temperaments
3 123\210
(17\210)
702.86
(97.14)
3/2
(135\128)
Misty
5 98\210
(13\210)
560.00
(74.29)
864/625
(25/24)
Trisedodge