User:Eliora/Pokoisma: Difference between revisions

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Created page with "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. All terms derive from the Old Slavic name for the letter П - which has Cyrillic numeral value of 80."
 
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Tempering it out in the full 29-limit produces rank-9 pokoismic temperament, with 2.5.23.29 subgroup version being named pokoic.
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.
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.
All terms derive from the Old Slavic name for the letter П - which has Cyrillic numeral value of 80.
{{harmonics in equal|4880}}
{{harmonics in equal|6880}}

Revision as of 18:04, 4 September 2026

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
Error Absolute (¢) +0.094 -0.002 +0.027 -0.058 -0.006 -0.036 +0.092 +0.045 +0.028 +0.121 +0.004
Relative (%) +38.3 -0.9 +10.8 -23.4 -2.6 -14.6 +37.4 +18.1 +11.4 +49.1 +1.8
Steps
(reduced)
7735
(2855)
11331
(1571)
13700
(3940)
15469
(829)
16882
(2242)
18058
(3418)
19066
(4426)
19947
(427)
20730
(1210)
21435
(1915)
22075
(2555)
Approximation of odd harmonics in 6880edo
Harmonic 3 5 7 9 11 13 15 17 19 21 23
Error Absolute (¢) +0.0799 +0.0235 +0.0694 -0.0147 +0.0193 -0.0044 -0.0710 +0.0446 +0.0451 -0.0251 -0.0185
Relative (%) +45.8 +13.5 +39.8 -8.4 +11.0 -2.5 -40.7 +25.6 +25.9 -14.4 -10.6
Steps
(reduced)
10905
(4025)
15975
(2215)
19315
(5555)
21809
(1169)
23801
(3161)
25459
(4819)
26879
(6239)
28122
(602)
29226
(1706)
30219
(2699)
31122
(3602)