User:Dummy index/Semitritave: Difference between revisions
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==False octave== | ==False octave== | ||
Assuming the semitritave is available for [[Ed5/3 through ed7/3|false octave]]. Differ from [[acoustic phi]] or [[ed7/4]], two equave makes 3:1, well-known equave. | |||
==2*N-edt== | ==2*N-edt== | ||
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| 24edo | | 24edo | ||
| hypopent | | hypopent | ||
| "Fifth" is 11\19edst ≈ 11/8. Can convert easily from 19edo. | | "Fifth" is 11\19edst ≈ 11/8. Can convert easily from 19edo. "minor tenth" (e.g. (19+3+2)\19edst) ~ 2/1. "Major triad" ≈ 16:19:22. | ||
|- | |- | ||
| 23 | | 23 | ||
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==Rank-2 temperaments== | ==Rank-2 temperaments== | ||
===Tribilo as micromeantone=== | ===Tribilo as a micromeantone=== | ||
{{See also|Tribilo family}} | {{See also|Tribilo family}} | ||
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[[POTE generator]]: ~121/96 = 400.0108 (or ~11/8 = 550.9667) | [[POTE generator]]: ~121/96 = 400.0108 (or ~11/8 = 550.9667) | ||
Optimal | [[Optimal ET sequence]]: b14, b24, b38, b138, b176, b214, b252 | ||
[[Badness]]: 2.44 × 10<sup>-3</sup> | [[Badness]]: 2.44 × 10<sup>-3</sup> | ||
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http://x31eq.com/cgi-bin/rt.cgi?limit=3_2_11_13%2F5_17&ets=b38_b62&tuning=po | http://x31eq.com/cgi-bin/rt.cgi?limit=3_2_11_13%2F5_17&ets=b38_b62&tuning=po | ||
===b24 & b66 as microaugust=== | ===b24 & b66 as a microaugust=== | ||
Subgroup: 3.5/2.11/8 | Subgroup: 3.5/2.11/8 | ||
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[[Tp tuning|POL2 generator]]: ~288/275 = 82.9018 (or ~11/8 = 551.083) | [[Tp tuning|POL2 generator]]: ~288/275 = 82.9018 (or ~11/8 = 551.083) | ||
Optimal | [[Optimal ET sequence]]: b24, b66, b90, b114, b138, b252 | ||
[[Tp tuning #T2 tuning|RMS error]]: | [[Tp tuning #T2 tuning|RMS error]]: | ||
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http://x31eq.com/cgi-bin/rt.cgi?limit=3_5%2F2_16%2F7_11%2F8_13%2F2&ets=b24_b66p&tuning=po | http://x31eq.com/cgi-bin/rt.cgi?limit=3_5%2F2_16%2F7_11%2F8_13%2F2&ets=b24_b66p&tuning=po | ||
===b38 & b54 as microsensi=== | ===b32 & b56 as a microdiminished=== | ||
Subgroup: 3.16.5.11 | |||
http://x31eq.com/cgi-bin/rt.cgi?limit=3_16_5_11&ets=b32_b56&tuning=po | |||
===subgroup 3.7.11 seems to be a lot=== | |||
===Vulture (no-fives Buzzard)=== | |||
Subgroup: 3.2.7 | |||
http://x31eq.com/cgi-bin/rt.cgi?limit=3_2_7&ets=b8_b84&tuning=po | |||
===b38 & b54 as a microsensi=== | |||
Subgroup: 3.2.7.11/5 | Subgroup: 3.2.7.11/5 | ||
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[[Tp tuning|POL2 generator]]: ~896/729 = 351.4241 (or ~99/70 = 599.5534) | [[Tp tuning|POL2 generator]]: ~896/729 = 351.4241 (or ~99/70 = 599.5534) | ||
Optimal | [[Optimal ET sequence]]: b38, b54, b92 | ||
[[Tp tuning #T2 tuning|RMS error]]: | [[Tp tuning #T2 tuning|RMS error]]: | ||
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http://x31eq.com/cgi-bin/rt.cgi?limit=3_2_7_11%2F5_13%2F5&ets=b38_b54&tuning=po | http://x31eq.com/cgi-bin/rt.cgi?limit=3_2_7_11%2F5_13%2F5&ets=b38_b54&tuning=po | ||
===b26 & b88 as microoneirotonic=== | ===b26 & b88 as a microoneirotonic=== | ||
Subgroup: 3.5.7.26 | Subgroup: 3.5.7.26 | ||
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[[POTE generator]]: ~26/21 = 367.0018 (or ~7/5 = 583.9757) | [[POTE generator]]: ~26/21 = 367.0018 (or ~7/5 = 583.9757) | ||
Optimal | [[Optimal ET sequence]]: b10, b16, b26, b62, b88, b114 | ||
[[Badness]]: 1.43 × 10<sup>-3</sup> | [[Badness]]: 1.43 × 10<sup>-3</sup> | ||
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Related temperament: [[mirkat]] | Related temperament: [[mirkat]] | ||
== | ==Another periods== | ||
<math>\sqrt{3}^{\sqrt{2}} \approx \varphi^{\varphi}</math> (off by 3 cents). However, this does not mean that acoustic phi and semitritave should be used together. | |||
Divide or reverse divide by silver [[Metallic MOS]]:<br /> | |||
<math>\sqrt{3}^{\sqrt{2} - 1}</math> ≈ 394¢<br /> | |||
951¢ => 2 * 394¢ + 1 * 163¢ => 5 * 163¢ + 2 * 68¢<br /> | |||
1 * 951¢ + 1 * 394¢ => 3 * 394¢ + 1 * 163¢ => 3 * 231¢ + 4 * 163¢ (3L 4s (1345¢ equivalent))<br /> | |||
2 * 951¢ + 1 * 394¢ => 5 * 394¢ + 2 * 163¢ (5L 2s (2296¢ equivalent))<br /> | |||
231¢ is near 8/7, 163¢ is near 11/10.<br /> | |||
http://x31eq.com/cgi-bin/rt.cgi?limit=3_8_10_7_11_19&ets=b10_b34&tuning=po | |||
===== 3L 4s (1345¢ equivalent) ===== | |||
{| class="wikitable" | |||
! | |||
!Cents | |||
!In L's and s's | |||
!Notation | |||
!Approximate ratios<ref>based on treating as a 3.8.10.7.11.19 subgroup; other approaches are possible.</ref> | |||
|- | |||
|unison | |||
|0 | |||
|0L + 0s | |||
|C | |||
|1/1 | |||
|- | |||
|neutral 2nd | |||
|163.162 | |||
|0L + 1s | |||
|vD | |||
|11/10, 10/9, 21/19 | |||
|- | |||
|major 2nd | |||
|230.746 | |||
|1L + 0s | |||
|D | |||
|8/7, 9/8 | |||
|- | |||
|neutral 3rd | |||
|393.908 | |||
|1L + 1s | |||
|vE | |||
|5/4, 24/19 | |||
|- | |||
|perfect 4th | |||
|557.070 | |||
|1L + 2s | |||
|F | |||
|11/8 | |||
|- | |||
|perfect 5th | |||
|787.816 | |||
|2L + 2s | |||
|G | |||
|30/19, 11/7 | |||
|- | |||
|neutral 6th | |||
|950.978 | |||
|2L + 3s | |||
|vA | |||
|19/11, 33/19 | |||
|- | |||
|neutral 7th | |||
|1181.723 | |||
|3L + 3s | |||
|vB | |||
|(2/1) | |||
|- | |||
|octave | |||
|1344.885 | |||
|3L + 4s | |||
|C | |||
|24/11 | |||
|- | |||
|neutral 9th | |||
|1508.047 | |||
|3L + 5s | |||
|vD | |||
|12/5,19/8 | |||
|- | |||
|major 9th | |||
|1575.631 | |||
|4L + 4s | |||
|D | |||
|(5/2) | |||
|- | |||
|neutral 10th | |||
|1738.793 | |||
|4L + 5s | |||
|vE | |||
|30/11,19/7 | |||
|- | |||
|perfect 11th | |||
|1901.955 | |||
|4L + 6s | |||
|F | |||
|3/1 | |||
|} | |||
<references/> | |||
2s ≈ 326.324¢ ≈ (6/5),11/9 | |||
==Memo== | ==Memo== | ||
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[http://x31eq.com/cgi-bin/pregular.cgi?limit=3.2.5.13.17&error=5.0 3.2.5.13.17 => 54edt], | [http://x31eq.com/cgi-bin/pregular.cgi?limit=3.2.5.13.17&error=5.0 3.2.5.13.17 => 54edt], | ||
[http://x31eq.com/cgi-bin/pregular.cgi?limit=3.10.14.17.11%2F8&error=5.0 3.10.14.17.11/8 => 62edt] | [http://x31eq.com/cgi-bin/pregular.cgi?limit=3.10.14.17.11%2F8&error=5.0 3.10.14.17.11/8 => 62edt] | ||