183edo: Difference between revisions
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| Fifth = 107\183 (701.64¢) | | Fifth = 107\183 (701.64¢) | ||
| Major 2nd = 31\183 (203¢) | | Major 2nd = 31\183 (203¢) | ||
| | | Semitones = 17:14 (111¢ : 92¢) | ||
| | | Consistency = 17 | ||
}} | }} | ||
The '''183 equal divisions of the octave''' ('''183edo'''), or the '''183(-tone) equal temperament''' ('''183tet''', '''183et''') when viewed from a [[regular temperament]] perspective, divides the [[octave]] into 183 [[equal]] parts of about 6.56 [[cent]]s each, a size close to [[243/242]], the rastma. | The '''183 equal divisions of the octave''' ('''183edo'''), or the '''183(-tone) equal temperament''' ('''183tet''', '''183et''') when viewed from a [[regular temperament]] perspective, divides the [[octave]] into 183 [[equal]] parts of about 6.56 [[cent]]s each, a size close to [[243/242]], the rastma. | ||
== Theory == | == Theory == | ||
183edo is notable as a higher limit system, especially when 7 is left out of the picture. It tempers out the [[schisma]], 32805/32768, in the [[5-limit]]. In the [[7-limit]], it tempers out porwell, [[6144/6125]], cataharry, [[19683/19600]] and mirkwai, [[16875/16807]]. In the [[11-limit]], it tempers out [[540/539]], [[3025/3024]] and [[8019/8000]]; in the [[13-limit]], [[351/350]] | 183edo is notable as a higher limit system, especially when 7 is left out of the picture. It tempers out the [[schisma]], 32805/32768, in the [[5-limit]]. In the [[7-limit]], it tempers out porwell, [[6144/6125]], cataharry, [[19683/19600]] and mirkwai, [[16875/16807]]. In the [[11-limit]], it tempers out [[540/539]], [[3025/3024]] and [[8019/8000]]; in the [[13-limit]], [[351/350]], [[676/675]], [[1001/1000]], [[2080/2079]] and [[4096/4095]]; in the [[17-limit]] 442/441, 561/560 and [[715/714]]; and in the [[19-limit]] 456/455. It is the [[optimal patent val]] for 13-, 17- and 19-limit [[mirkat]] temperament, the 72&111 temperament, and an excellent tuning for the [[rank-3 temperament]]s [[madagascar]] and [[borneo]]. | ||
As a no-sevens temperament, it tempers out [[32805/32768]], 5632/5625, [[8019/8000]], [[676/675]], | As a no-sevens temperament, it tempers out [[32805/32768]], 5632/5625, [[8019/8000]], [[676/675]], [[4225/4224]], [[6656/6655]], [[936/935]], [[1089/1088]], and 1377/1375. | ||
=== Prime harmonics === | === Prime harmonics === | ||