User:Eliora/Pokoisma

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Pokoisma is the comma which identifies 116/115 with 1/80th of the octave.

Tempering it out in the full 29-limit produces rank-9 pokoismic temperament, with 2.5.23.29 subgroup version being named pokoic.

Also, 1120 & 2000 temperament is in development, which is simply called pokoi. 4880 & 6880 though for now is the better edo join, although 2000edo is consistent in the 29-odd-limit.

All terms derive from the Old Slavic name for the letter П - which has Cyrillic numeral value of 80.


Approximation of odd harmonics in 4880edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Error Absolute (¢) +0.094 -0.002 +0.027 -0.058 -0.006 -0.036 +0.092 +0.045 +0.028 +0.121 +0.004 -0.004 +0.037 +0.013 -0.118
Relative (%) +38.3 -0.9 +10.8 -23.4 -2.6 -14.6 +37.4 +18.1 +11.4 +49.1 +1.8 -1.8 +14.9 +5.3 -47.8
Steps
(reduced)
7735
(2855)
11331
(1571)
13700
(3940)
15469
(829)
16882
(2242)
18058
(3418)
19066
(4426)
19947
(427)
20730
(1210)
21435
(1915)
22075
(2555)
22662
(3142)
23204
(3684)
23707
(4187)
24176
(4656)
Approximation of odd harmonics in 6880edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31
Error Absolute (¢) +0.0799 +0.0235 +0.0694 -0.0147 +0.0193 -0.0044 -0.0710 +0.0446 +0.0451 -0.0251 -0.0185 +0.0470 +0.0652 +0.0158 +0.0226
Relative (%) +45.8 +13.5 +39.8 -8.4 +11.0 -2.5 -40.7 +25.6 +25.9 -14.4 -10.6 +26.9 +37.4 +9.1 +12.9
Steps
(reduced)
10905
(4025)
15975
(2215)
19315
(5555)
21809
(1169)
23801
(3161)
25459
(4819)
26879
(6239)
28122
(602)
29226
(1706)
30219
(2699)
31122
(3602)
31950
(4430)
32714
(5194)
33423
(5903)
34085
(6565)