207edo: Difference between revisions
→Regular temperament properties: review +1 |
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== Regular temperament properties == | == Regular temperament properties == | ||
{ | {{comma basis begin}} | ||
|- | |- | ||
| 2.3 | | 2.3 | ||
| Line 32: | Line 24: | ||
| 32805/32768, {{monzo| 2 31 -22 }} | | 32805/32768, {{monzo| 2 31 -22 }} | ||
| {{mapping| 207 328 481 }} | | {{mapping| 207 328 481 }} | ||
| | | −0.1942 | ||
| 0.5166 | | 0.5166 | ||
| 8.91 | | 8.91 | ||
| Line 39: | Line 31: | ||
| 6144/6125, 19683/19600, 50421/50000 | | 6144/6125, 19683/19600, 50421/50000 | ||
| {{mapping| 207 328 481 581 }} | | {{mapping| 207 328 481 581 }} | ||
| | | −0.0825 | ||
| 0.4874 | | 0.4874 | ||
| 8.41 | | 8.41 | ||
| Line 46: | Line 38: | ||
| 441/440, 3388/3375, 6144/6125, 19683/19600 | | 441/440, 3388/3375, 6144/6125, 19683/19600 | ||
| {{mapping| 207 328 481 581 716 }} | | {{mapping| 207 328 481 581 716 }} | ||
| | | −0.0317 | ||
| 0.4477 | | 0.4477 | ||
| 7.72 | | 7.72 | ||
| Line 53: | Line 45: | ||
| 351/350, 441/440, 676/675, 847/845, 3584/3575 | | 351/350, 441/440, 676/675, 847/845, 3584/3575 | ||
| {{mapping| 207 328 481 581 716 766 }} | | {{mapping| 207 328 481 581 716 766 }} | ||
| | | −0.0287 | ||
| 0.4087 | | 0.4087 | ||
| 7.05 | | 7.05 | ||
| Line 60: | Line 52: | ||
| 351/350, 441/440, 561/560, 676/675, 847/845, 1089/1088 | | 351/350, 441/440, 561/560, 676/675, 847/845, 1089/1088 | ||
| {{mapping| 207 328 481 581 716 766 846 }} | | {{mapping| 207 328 481 581 716 766 846 }} | ||
| | | −0.0034 | ||
| 0.3834 | | 0.3834 | ||
| 6.61 | | 6.61 | ||
{{comma basis end}} | |||
=== Rank-2 temperaments === | === Rank-2 temperaments === | ||
{ | {{rank-2 begin}} | ||
|- | |- | ||
| 1 | | 1 | ||
| Line 91: | Line 77: | ||
| 4/3 | | 4/3 | ||
| [[Helmholtz]] | | [[Helmholtz]] | ||
{{rank-2 end}} | |||
{{orf}} | |||
Revision as of 03:11, 16 November 2024
| ← 206edo | 207edo | 208edo → |
Theory
207et tempers out 32805/32768 (schisma) in the 5-limit, 6144/6125 and 19683/19600 in the 7-limit, 441/440 and 43923/43904 in the 11-limit, and 351/350, 676/675, 729/728, 847/845, 1716/1715 in the 13-limit. It serves as a tuning in the 11- and 13-limit for the swetneus temperament. It is significantly more accurate on the 2.3.7.11.13 subgroup, a favorite of many people, and one which contains both 729/728 and 10648/10647, which it tempers out.
Prime harmonics
| Harmonic | 2 | 3 | 5 | 7 | 11 | 13 | 17 | 19 | 23 | 29 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | +0.00 | -0.51 | +2.09 | -0.71 | -0.59 | +0.05 | -0.61 | -1.86 | -2.19 | +2.31 | +2.79 |
| Relative (%) | +0.0 | -8.7 | +36.1 | -12.2 | -10.2 | +0.9 | -10.5 | -32.1 | -37.7 | +39.8 | +48.1 | |
| Steps (reduced) |
207 (0) |
328 (121) |
481 (67) |
581 (167) |
716 (95) |
766 (145) |
846 (18) |
879 (51) |
936 (108) |
1006 (178) |
1026 (198) | |
Subsets and supersets
Since 207 factors into 32 × 23, 207edo has subset edos 3, 9, 23, and 69.
Regular temperament properties
Template:Comma basis begin |- | 2.3 | [-328 207⟩ | [⟨207 328]] | +0.1595 | 0.1596 | 2.75 |- | 2.3.5 | 32805/32768, [2 31 -22⟩ | [⟨207 328 481]] | −0.1942 | 0.5166 | 8.91 |- | 2.3.5.7 | 6144/6125, 19683/19600, 50421/50000 | [⟨207 328 481 581]] | −0.0825 | 0.4874 | 8.41 |- | 2.3.5.7.11 | 441/440, 3388/3375, 6144/6125, 19683/19600 | [⟨207 328 481 581 716]] | −0.0317 | 0.4477 | 7.72 |- | 2.3.5.7.11.13 | 351/350, 441/440, 676/675, 847/845, 3584/3575 | [⟨207 328 481 581 716 766]] | −0.0287 | 0.4087 | 7.05 |- | 2.3.5.7.11.13.17 | 351/350, 441/440, 561/560, 676/675, 847/845, 1089/1088 | [⟨207 328 481 581 716 766 846]] | −0.0034 | 0.3834 | 6.61 Template:Comma basis end
Rank-2 temperaments
Template:Rank-2 begin |- | 1 | 25\207 | 144.93 | 49/45 | Swetneus |- | 1 | 43\207 | 249.28 | 15/13 | Hemischis |- | 1 | 86\207 | 498.55 | 4/3 | Helmholtz Template:Rank-2 end Template:Orf