1578edo: Difference between revisions

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The '''1578 equal division''' divides the octave into 1578 equal parts of 0.7605 cents each. It is a very strong higher limit system, and is a [[The_Riemann_Zeta_Function_and_Tuning#Zeta EDO lists|zeta peak, peak integer, integral and gap edo]]. It is distinctly consistent through the 29 limit, and is the first edo past 311 with a lower 29-limit  [[Tenney-Euclidean_temperament_measures#TE simple badness|relative error]]. It is also the lowest past 311 in the 31 limit, the lowest past 581 in the 23 limit, and the lowest past 1178 in the 19 limit. It is also quite strong taken just as an 11-limit system; the only smaller edo with a lower 11-limit relative error is [[342edo|342]]. 
{{EDO intro|1578}}


It is also the most accurate EDO below 10000 for approximating quarter comma meantone, specifically in its m-chromatic 7L5s MOS scale.  
It is a very strong higher limit system, and is a [[The_Riemann_Zeta_Function_and_Tuning#Zeta EDO lists|zeta peak, peak integer, integral and gap edo]]. It is distinctly consistent through the [[29-limit]], and is the first [[edo]] past [[311edo]] with a lower 29-limit [[Tenney-Euclidean_temperament_measures#TE simple badness|relative error]]. It is also the lowest past 311edo in the [[31-limit]], the lowest past [[581edo]] in the [[23-limit]], and the lowest past [[1178edo]] in the [[19-limit]]. It is also quite strong taken just as an [[11-limit]] system; the only smaller edo with a lower 11-limit relative error is [[342edo]].


It is also the most accurate edo below 10000 to approximate [[quarter-comma meantone]], with its approximation of {{monzo|0 0 1/4}} with a relative error of only 0.06%.
== Theory ==
Some 31 limit or lower superparticular commas it tempers out are 3249/3248, 3510/3509, 3876/3875, 3969/3968, 4186/4185, 4225/4224, 4641/4640, 4693/4692, 4761/4760, 4901/4900, 4914/4913, 4992/4991, 5083/5082, 5643/5642, 5776/5775, 5832/5831, 5888/5887, 5985/5984, 6175/6174, 6325/6324, 6480/6479, 6656/6655, 6728/6727, 7106/7105, 7425/7424, 7657/7656, 7866/7865, 7889/7888, 8092/8091, 8281/8280, 8464/8463, 8526/8525, 8625/8624, 8671/8670, 8960/8959, 9425/9424, 9801/9800, 9802/9801, 10241/10240, 10557/10556, 10626/10625, 10830/10829, 10881/10880, 11271/11270, 11340/11339, 11781/11780, 12006/12005, 12122/12121, 12168/12167, 12376/12375, 12636/12635, 12673/12672, 13225/13224, 13300/13299, 13311/13310, 13312/13311, 13377/13376, 14365/14364, 14400/14399, 15625/15624, 16929/16928, 19228/19227, 19251/19250, 19344/19343, 19551/19550, 19965/19964, 20736/20735, 21505/21504, 21736/21735, 23276/23275, 23375/23374, 23409/23408, 23716/23715, 23751/23750, 24795/24794, 25025/25024, 25840/25839, 25921/25920, 27000/26999... .
Some 31 limit or lower superparticular commas it tempers out are 3249/3248, 3510/3509, 3876/3875, 3969/3968, 4186/4185, 4225/4224, 4641/4640, 4693/4692, 4761/4760, 4901/4900, 4914/4913, 4992/4991, 5083/5082, 5643/5642, 5776/5775, 5832/5831, 5888/5887, 5985/5984, 6175/6174, 6325/6324, 6480/6479, 6656/6655, 6728/6727, 7106/7105, 7425/7424, 7657/7656, 7866/7865, 7889/7888, 8092/8091, 8281/8280, 8464/8463, 8526/8525, 8625/8624, 8671/8670, 8960/8959, 9425/9424, 9801/9800, 9802/9801, 10241/10240, 10557/10556, 10626/10625, 10830/10829, 10881/10880, 11271/11270, 11340/11339, 11781/11780, 12006/12005, 12122/12121, 12168/12167, 12376/12375, 12636/12635, 12673/12672, 13225/13224, 13300/13299, 13311/13310, 13312/13311, 13377/13376, 14365/14364, 14400/14399, 15625/15624, 16929/16928, 19228/19227, 19251/19250, 19344/19343, 19551/19550, 19965/19964, 20736/20735, 21505/21504, 21736/21735, 23276/23275, 23375/23374, 23409/23408, 23716/23715, 23751/23750, 24795/24794, 25025/25024, 25840/25839, 25921/25920, 27000/26999... .



Revision as of 19:11, 21 August 2022

Template:EDO intro

It is a very strong higher limit system, and is a zeta peak, peak integer, integral and gap edo. It is distinctly consistent through the 29-limit, and is the first edo past 311edo with a lower 29-limit relative error. It is also the lowest past 311edo in the 31-limit, the lowest past 581edo in the 23-limit, and the lowest past 1178edo in the 19-limit. It is also quite strong taken just as an 11-limit system; the only smaller edo with a lower 11-limit relative error is 342edo.

It is also the most accurate edo below 10000 to approximate quarter-comma meantone, with its approximation of [0 0 1/4 with a relative error of only 0.06%.

Theory

Some 31 limit or lower superparticular commas it tempers out are 3249/3248, 3510/3509, 3876/3875, 3969/3968, 4186/4185, 4225/4224, 4641/4640, 4693/4692, 4761/4760, 4901/4900, 4914/4913, 4992/4991, 5083/5082, 5643/5642, 5776/5775, 5832/5831, 5888/5887, 5985/5984, 6175/6174, 6325/6324, 6480/6479, 6656/6655, 6728/6727, 7106/7105, 7425/7424, 7657/7656, 7866/7865, 7889/7888, 8092/8091, 8281/8280, 8464/8463, 8526/8525, 8625/8624, 8671/8670, 8960/8959, 9425/9424, 9801/9800, 9802/9801, 10241/10240, 10557/10556, 10626/10625, 10830/10829, 10881/10880, 11271/11270, 11340/11339, 11781/11780, 12006/12005, 12122/12121, 12168/12167, 12376/12375, 12636/12635, 12673/12672, 13225/13224, 13300/13299, 13311/13310, 13312/13311, 13377/13376, 14365/14364, 14400/14399, 15625/15624, 16929/16928, 19228/19227, 19251/19250, 19344/19343, 19551/19550, 19965/19964, 20736/20735, 21505/21504, 21736/21735, 23276/23275, 23375/23374, 23409/23408, 23716/23715, 23751/23750, 24795/24794, 25025/25024, 25840/25839, 25921/25920, 27000/26999... .

Prime harmonics

Approximation of prime harmonics in 1578edo
Harmonic 2 3 5 7 11 13 17 19 23 29 31
Error Absolute (¢) +0.000 -0.054 -0.002 -0.005 +0.013 -0.223 -0.012 -0.175 -0.137 +0.081 +0.212
Relative (%) +0.0 -7.1 -0.3 -0.6 +1.7 -29.4 -1.6 -23.0 -18.1 +10.6 +27.8
Steps
(reduced)
1578
(0)
2501
(923)
3664
(508)
4430
(1274)
5459
(725)
5839
(1105)
6450
(138)
6703
(391)
7138
(826)
7666
(1354)
7818
(1506)