167edo: Difference between revisions
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{{Infobox ET}} | {{Infobox ET}} | ||
{{EDO intro|167}} | |||
== Theory == | |||
167et [[tempering out|tempers out]] the [[würschmidt comma]], 393216/390625, and the leapday comma, {{monzo| 31 -21 1 }}, in the [[5-limit]]; [[2401/2400]], [[3136/3125]], and 179200/177147 in the [[7-limit]]; [[896/891]], 2200/2187, and 3388/3375 in the [[11-limit]]; [[325/324]], [[352/351]], [[364/363]], [[1001/1000]], and [[1716/1715]] in the [[13-limit]], providing the [[optimal patent val]] for 11- and 13-limit [[Porwell temperaments|polypyth temperament]]; [[256/255]], [[442/441]], [[595/594]], [[715/714]], and [[936/935]] in the [[17-limit]]. It also [[support]]s the 11-limit [[Breedsmic temperaments #Unthirds|unthirds temperament]]. | |||
167edo also has a very close approximation to the [[golden magic]] scale. | 167edo also has a very close approximation to the [[golden magic]] scale. | ||
167edo | === Prime harmonics === | ||
{{Harmonics in equal|167|intervals=prime|columns=12}} | |||
{{Harmonics in equal|167|intervals=prime|columns=12|start=13|title=Approximation of prime harmonics in 167edo (continued)|collapsed=1}} | |||
=== Subsets and supersets === | |||
167edo is the 39th [[prime edo]]. | |||
==Regular temperament properties== | == Regular temperament properties == | ||
{| class="wikitable center-4 center-5 center-6" | {| class="wikitable center-4 center-5 center-6" | ||
! rowspan="2" |[[Subgroup]] | ! rowspan="2" | [[Subgroup]] | ||
! rowspan="2" |[[Comma list|Comma List]] | ! rowspan="2" | [[Comma list|Comma List]] | ||
! rowspan="2" |[[Mapping]] | ! rowspan="2" | [[Mapping]] | ||
! rowspan="2" |Optimal<br>8ve Stretch (¢) | ! rowspan="2" | Optimal<br>8ve Stretch (¢) | ||
! colspan="2" |Tuning Error | ! colspan="2" | Tuning Error | ||
|- | |- | ||
![[TE error|Absolute]] (¢) | ! [[TE error|Absolute]] (¢) | ||
![[TE simple badness|Relative]] (%) | ! [[TE simple badness|Relative]] (%) | ||
|- | |- | ||
|2.3 | | 2.3 | ||
|{{monzo|265 -167}} | | {{monzo| 265 -167 }} | ||
|{{val|167 265}} | | {{val| 167 265 }} | ||
| -0.7056 | | -0.7056 | ||
| 0.7052 | | 0.7052 | ||
| 9.81 | | 9.81 | ||
|- | |- | ||
|2.3.5 | | 2.3.5 | ||
| | | 393216/390625, {{monzo| 31 -21 1 }} | ||
|{{val|167 265 388}} | | {{val| 167 265 388 }} | ||
| -0.7158 | | -0.7158 | ||
| 0.5759 | | 0.5759 | ||
| 8.01 | | 8.01 | ||
|- | |- | ||
|2.3.5.7 | | 2.3.5.7 | ||
| | | 2401/2400, 3136/3125, 179200/177147 | ||
|{{val|167 265 388 469}} | | {{val| 167 265 388 469 }} | ||
| -0.6467 | | -0.6467 | ||
| 0.5129 | | 0.5129 | ||
| 7.14 | | 7.14 | ||
|- | |- | ||
|2.3.5.7.11 | | 2.3.5.7.11 | ||
|896/891, 2200/2187, | | 896/891, 2200/2187, 2401/2400, 3136/3125 | ||
|{{val|167 265 388 469 578}} | | {{val| 167 265 388 469 578 }} | ||
| -0.6315 | | -0.6315 | ||
| 0.4598 | | 0.4598 | ||
| 6.40 | | 6.40 | ||
|- | |- | ||
|2.3.5.7.11.13 | | 2.3.5.7.11.13 | ||
|325/324, 352/351, | | 325/324, 352/351, 364/363, 1001/1000, 1716/1715 | ||
|{{val|167 265 388 469 578 618}} | | {{val| 167 265 388 469 578 618 }} | ||
| -0.5349 | | -0.5349 | ||
| 0.4721 | | 0.4721 | ||
| 6.57 | | 6.57 | ||
|- | |- | ||
|2.3.5.7.11.13.17 | | 2.3.5.7.11.13.17 | ||
|325/324, 352/351, | | 256/255, 325/324, 352/351, 364/363, 442/441, 1001/1000 | ||
|{{val|167 265 388 469 578 618 683}} | | {{val| 167 265 388 469 578 618 683 }} | ||
| -0.5573 | | -0.5573 | ||
| 0.4405 | | 0.4405 | ||
| 6.13 | | 6.13 | ||
|} | |} | ||
Revision as of 10:05, 21 April 2023
| ← 166edo | 167edo | 168edo → |
Theory
167et tempers out the würschmidt comma, 393216/390625, and the leapday comma, [31 -21 1⟩, in the 5-limit; 2401/2400, 3136/3125, and 179200/177147 in the 7-limit; 896/891, 2200/2187, and 3388/3375 in the 11-limit; 325/324, 352/351, 364/363, 1001/1000, and 1716/1715 in the 13-limit, providing the optimal patent val for 11- and 13-limit polypyth temperament; 256/255, 442/441, 595/594, 715/714, and 936/935 in the 17-limit. It also supports the 11-limit unthirds temperament.
167edo also has a very close approximation to the golden magic scale.
Prime harmonics
| Harmonic | 2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 | 31 | 37 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | +0.00 | +2.24 | +1.71 | +1.23 | +1.98 | +0.19 | +2.83 | -2.90 | -3.12 | -2.03 | -2.52 | +0.15 |
| Relative (%) | +0.0 | +31.1 | +23.8 | +17.2 | +27.5 | +2.7 | +39.4 | -40.4 | -43.5 | -28.3 | -35.1 | +2.1 | |
| Steps (reduced) |
167 (0) |
265 (98) |
388 (54) |
469 (135) |
578 (77) |
618 (117) |
683 (15) |
709 (41) |
755 (87) |
811 (143) |
827 (159) |
870 (35) | |
| Harmonic | 41 | 43 | 47 | 53 | 59 | 61 | 67 | 71 | 73 | 79 | 83 | 89 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | +2.08 | -1.34 | +2.76 | +3.14 | -2.88 | -3.11 | -0.27 | -0.06 | +2.15 | +1.93 | +2.65 | -3.22 |
| Relative (%) | +28.9 | -18.6 | +38.4 | +43.7 | -40.1 | -43.3 | -3.7 | -0.8 | +29.9 | +26.9 | +36.8 | -44.7 | |
| Steps (reduced) |
895 (60) |
906 (71) |
928 (93) |
957 (122) |
982 (147) |
990 (155) |
1013 (11) |
1027 (25) |
1034 (32) |
1053 (51) |
1065 (63) |
1081 (79) | |
Subsets and supersets
167edo is the 39th prime edo.
Regular temperament properties
| Subgroup | Comma List | Mapping | Optimal 8ve Stretch (¢) |
Tuning Error | |
|---|---|---|---|---|---|
| Absolute (¢) | Relative (%) | ||||
| 2.3 | [265 -167⟩ | ⟨167 265] | -0.7056 | 0.7052 | 9.81 |
| 2.3.5 | 393216/390625, [31 -21 1⟩ | ⟨167 265 388] | -0.7158 | 0.5759 | 8.01 |
| 2.3.5.7 | 2401/2400, 3136/3125, 179200/177147 | ⟨167 265 388 469] | -0.6467 | 0.5129 | 7.14 |
| 2.3.5.7.11 | 896/891, 2200/2187, 2401/2400, 3136/3125 | ⟨167 265 388 469 578] | -0.6315 | 0.4598 | 6.40 |
| 2.3.5.7.11.13 | 325/324, 352/351, 364/363, 1001/1000, 1716/1715 | ⟨167 265 388 469 578 618] | -0.5349 | 0.4721 | 6.57 |
| 2.3.5.7.11.13.17 | 256/255, 325/324, 352/351, 364/363, 442/441, 1001/1000 | ⟨167 265 388 469 578 618 683] | -0.5573 | 0.4405 | 6.13 |