165edo

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Revision as of 07:10, 24 June 2023 by BudjarnLambeth (talk | contribs) (Added "harmonics in equal" table)
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← 164edo 165edo 166edo →
Prime factorization 3 × 5 × 11
Step size 7.27273 ¢ 
Fifth 97\165 (705.455 ¢)
Semitones (A1:m2) 19:10 (138.2 ¢ : 72.73 ¢)
Dual sharp fifth 97\165 (705.455 ¢)
Dual flat fifth 96\165 (698.182 ¢) (→ 32\55)
Dual major 2nd 28\165 (203.636 ¢)
Consistency limit 3
Distinct consistency limit 3

165edo is the equal division of the octave into 165 parts of 7.2727 cents each.

It is inconsistent to the 5-limit and higher limit, with two mappings possible for the 5-limit: <165 262 383| (patent val) and <165 261 383| (165b).

Using the patent val (with a sharp fifth), it tempers out 1638400/1594323 (immunity comma) and 1220703125/1207959552 (ditonma) in the 5-limit; 4000/3969, 65625/65536, and 84035/82944 in the 7-limit; 385/384, 2401/2376, 3388/3375, and 6655/6561 in the 11-limit; 196/195, 364/363, 676/675, 3185/3168, and 3200/3159 in the 13-limit.

Using the 165b val (with a flat fifth), it tempers out 34171875/33554432 (Ampersand's comma) and 129140163/125000000 in the 5-limit; 225/224, 1029/1024, and 100442349/97656250 in the 7-limit; 1944/1925, 2187/2156, 4000/3993, and 12005/11979 in the 11-limit; 144/143, 351/350, 625/624, 847/845, and 9261/9152 in the 13-limit. Using the 165bf val, it tempers out 364/363, 975/968, 1001/1000, 1701/1690, and 1716/1715 in the 13-limit.


Approximation of odd harmonics in 165edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23
Error Absolute (¢) +3.50 -0.86 -1.55 -0.27 +1.41 +3.11 +2.64 -3.14 +0.67 +1.95 -2.82
Relative (%) +48.1 -11.8 -21.4 -3.8 +19.4 +42.7 +36.3 -43.1 +9.2 +26.8 -38.8
Steps
(reduced)
262
(97)
383
(53)
463
(133)
523
(28)
571
(76)
611
(116)
645
(150)
674
(14)
701
(41)
725
(65)
746
(86)