460edo

Revision as of 18:20, 30 January 2022 by FloraC (talk | contribs) (+prime error table; +links; +category)

The 460 equal divisions of the octave divides the octave into 460 equal parts of 2.609 cents each.

460edo is a very strong 19-limit system and is uniquely consistent to the 21-odd-limit, with harmonics of 3 to 19 all tuned flat. It tempers out the schisma, 32805/32768, in the 5-limit and 4375/4374 and 65536/65625 in the 7-limit, so that it supports pontiac. In the 11-limit it tempers of 43923/43904, 3025/3024 and 9801/9800; in the 13-limit 1001/1000, 4225/4224 and 10648/10647; in the 17-limit 833/832, 1089/1088, 1225/1224, 1701/1700, 2058/2057, 2431/2430, 2601/2600 and 4914/4913; and in the 19-limit 1331/1330, 1445/1444, 1521/1520, 1540/1539, 1729/1728, 2376/2375, 2926/2925, 3136/3135, 3250/3249 and 4200/4199. It serves as the optimal patent val for various temperaments such as the rank five temperament tempering out 833/832 and 1001/1000.

Prime harmonics

Approximation of prime harmonics in 460edo
Harmonic 2 3 5 7 11 13 17 19 23 29 31
Error Absolute (¢) +0.00 -0.22 -0.23 -1.00 -0.88 -0.53 -0.61 -0.12 +0.42 +0.86 +0.18
Relative (%) +0.0 -8.3 -8.7 -38.3 -33.9 -20.2 -23.3 -4.7 +16.2 +32.9 +7.0
Steps
(reduced)
460
(0)
729
(269)
1068
(148)
1291
(371)
1591
(211)
1702
(322)
1880
(40)
1954
(114)
2081
(241)
2235
(395)
2279
(439)