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Sengic family: Difference between revisions

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<h2>IMPORTED REVISION FROM WIKISPACES</h2>
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This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br>
The '''sengic family''' of [[rank-3 temperament]]s [[tempering out|tempers out]] the senga a.k.a. sengic comma, [[686/675]].  
: This revision was by author [[User:genewardsmith|genewardsmith]] and made on <tt>2011-03-01 11:58:16 UTC</tt>.<br>
: The original revision id was <tt>206109272</tt>.<br>
: The revision comment was: <tt></tt><br>
The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br>
<h4>Original Wikitext content:</h4>
<div style="width:100%; max-height:400pt; overflow:auto; background-color:#f8f9fa; border: 1px solid #eaecf0; padding:0em"><pre style="margin:0px;border:none;background:none;word-wrap:break-word;white-space: pre-wrap ! important" class="old-revision-html">These temper out the senga, 686/675.


Comma: 686/675
Temperament discussed elsewhere include [[sensigh]] (→ [[Sensamagic family #Sensigh|Sensamagic family]]). Considered below are demeter and krypton.


Map: [&lt;1 0 2 1|, &lt;0 1 0 1|, &lt;0 0 3 2|]
== Sengic ==
EDOs: 9, 10, 18, 19, 27, 46
Sengic is naturally a 2.3.5.7.13 subgroup temperament due to the identity 686/675 = (91/90)(196/195) and 91/90 = (169/168)(196/195). This identifies the last generator as 13/12~14/13~15/14. The 7-limit parent was discovered and named in 2005, whereas the extension was noted by [[Keenan Pepper]] in 2011<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_19390.html Yahoo! Tuning Group | ''It's the "thirds", stupid!'']</ref>.  
Badness: 0.000320


==Krypton==
[[Subgroup]]: 2.3.5.7
Commas: 56/55, 540/539


Map: [&lt;1 0 2 1 2|, &lt;0 1 0 1 1| &lt;0 0 3 2 -1|]
[[Comma list]]: [[686/675]]
EDOs: 9, 10, 19, 36
Badness: 0.000856


===13-limit===
{{Mapping|legend=1| 1 0 2 1 | 0 1 0 1 | 0 0 3 2 }}
Commas: 56/55, 78/77, 91/90


Map: [&lt;1 0 2 1 2 2|, &lt;0 1 0 1 1 1| &lt;0 0 3 2 -1 1|]
: mapping generators: ~2, ~3, ~15/14
EDOs: 9, 10, 19, 36
 
Badness: 0.000727</pre></div>
[[Optimal tuning]] ([[CTE]]): ~2 = 1\1, ~3/2 = 703.7873, ~15/14 = 129.6451
<h4>Original HTML content:</h4>
 
<div style="width:100%; max-height:400pt; overflow:auto; background-color:#f8f9fa; border: 1px solid #eaecf0; padding:0em"><pre style="margin:0px;border:none;background:none;word-wrap:break-word;width:200%;white-space: pre-wrap ! important" class="old-revision-html">&lt;html&gt;&lt;head&gt;&lt;title&gt;Sengic family&lt;/title&gt;&lt;/head&gt;&lt;body&gt;These temper out the senga, 686/675.&lt;br /&gt;
{{Optimal ET sequence|legend=1| 8d, 9, 10, 17c, 19, 27, 46 }}
&lt;br /&gt;
 
Comma: 686/675&lt;br /&gt;
[[Badness]]: 0.320 × 10<sup>-3</sup>
&lt;br /&gt;
 
Map: [&amp;lt;1 0 2 1|, &amp;lt;0 1 0 1|, &amp;lt;0 0 3 2|]&lt;br /&gt;
[[Projection pair]]s: ~5 = 3375/686, ~7 = 675/98 to 2.3.7/5
EDOs: 9, 10, 18, 19, 27, 46&lt;br /&gt;
 
Badness: 0.000320&lt;br /&gt;
=== 2.3.5.7.13 subgroup ===
&lt;br /&gt;
Subgroup: 2.3.5.7.13
&lt;!-- ws:start:WikiTextHeadingRule:0:&amp;lt;h2&amp;gt; --&gt;&lt;h2 id="toc0"&gt;&lt;a name="x-Krypton"&gt;&lt;/a&gt;&lt;!-- ws:end:WikiTextHeadingRule:0 --&gt;Krypton&lt;/h2&gt;
 
Commas: 56/55, 540/539&lt;br /&gt;
Comma list: 91/90, 169/168
&lt;br /&gt;
 
Map: [&amp;lt;1 0 2 1 2|, &amp;lt;0 1 0 1 1| &amp;lt;0 0 3 2 -1|]&lt;br /&gt;
Sval mapping: {{mapping| 1 0 2 1 2 | 0 1 0 1 1 | 0 0 3 2 1 }}
EDOs: 9, 10, 19, 36&lt;br /&gt;
 
Badness: 0.000856&lt;br /&gt;
Optimal tuning (CTE): ~2 = 1\1, ~3/2 = 704.5918, ~14/13 = 129.7585
&lt;br /&gt;
 
&lt;!-- ws:start:WikiTextHeadingRule:2:&amp;lt;h3&amp;gt; --&gt;&lt;h3 id="toc1"&gt;&lt;a name="x-Krypton-13-limit"&gt;&lt;/a&gt;&lt;!-- ws:end:WikiTextHeadingRule:2 --&gt;13-limit&lt;/h3&gt;
{{Optimal ET sequence|legend=1| 8d, 9, 10, 17c, 19, 27, 46, 111df, 121df }}
Commas: 56/55, 78/77, 91/90&lt;br /&gt;
 
&lt;br /&gt;
Badness: 0.320 × 10<sup>-3</sup>
Map: [&amp;lt;1 0 2 1 2 2|, &amp;lt;0 1 0 1 1 1| &amp;lt;0 0 3 2 -1 1|]&lt;br /&gt;
 
EDOs: 9, 10, 19, 36&lt;br /&gt;
== Demeter ==
Badness: 0.000727&lt;/body&gt;&lt;/html&gt;</pre></div>
Named by [[Graham Breed]] in 2011, demeter was found to be locally efficient in the 17-limit among all rank-3 temperaments<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_19673.html Yahoo! Tuning Group | ''Artemis and friends'']</ref>.
 
[[Subgroup]]: 2.3.5.7.11
 
[[Comma list]]: 441/440, 686/675
 
{{Mapping|legend=1| 1 0 2 1 -3 | 0 1 0 1 4 | 0 0 3 2 1 }}
 
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~3/2 = 705.518, ~15/14 = 130.039
 
{{Optimal ET sequence|legend=1| 10, 17c, 19e, 27e, 46, 102, 148 }}
 
[[Badness]]: 1.32 × 10<sup>-3</sup>
 
[[Projection pair]]s: ~5 = 2725888/531441, ~7 = 15488/2187 to 2.3.11
 
=== 13-limit ===
Subgroup: 2.3.5.7.11.13
 
Comma list: 91/90, 169/168, 352/351
 
Mapping: {{mapping| 1 0 2 1 -3 2 | 0 1 0 1 4 1 | 0 0 3 2 1 1 }}
 
Optimal tuning (POTE): ~2 = 1\1, ~3/2 = 705.113, ~14/13 = 129.673
 
{{Optimal ET sequence|legend=1| 10, 17c, 19e, 27e, 29, 46, 102, 148f }}
 
Badness: 0.977 × 10<sup>-3</sup>
 
Projection pairs: ~5 = 2725888/531441, ~7 = 15488/2187, ~13 = 352/27 to 2.3.11
 
=== 17-limit ===
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 91/90, 136/135, 154/153, 169/168
 
Mapping: {{mapping| 1 0 2 1 -3 2 -1 | 0 1 0 1 4 1 3 | 0 0 3 2 1 1 3 }}
 
Optimal tuning (POTE): ~2 = 1\1, ~3/2 = 705.147, ~14/13 = 129.700
 
{{Optimal ET sequence|legend=1| 10, 17cg, 19eg, 27eg, 29g, 46, 102, 148f }}
 
Badness: 0.830 × 10<sup>-3</sup>
 
Projection pairs: ~5 = 2725888/531441, ~7 = 15488/2187, ~13 = 352/27, ~17 = 340736/19683 to 2.3.11
 
== Krypton ==
[[Subgroup]]: 2.3.5.7.11
 
[[Comma list]]: 56/55, 540/539
 
{{Mapping|legend=1| 1 0 2 1 2 | 0 1 0 1 1 | 0 0 3 2 -1 }}
 
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~3/2 = 705.978, ~12/11 = 132.544
 
{{Optimal ET sequence|legend=1| 8d, 9, 10, 17c, 19, 27e, 36 }}
 
[[Badness]]: 0.856 × 10<sup>-3</sup>
 
[[Projection pair]]s: ~5 = 6912/1331, ~7 = 854/121 to 2.3.11
 
=== 13-limit ===
Subgroup: 2.3.5.7.11.13
 
Comma list: 56/55, 78/77, 91/90
 
Mapping: {{mapping| 1 0 2 1 2 2 | 0 1 0 1 1 1 | 0 0 3 2 -1 1 }}
 
Optimal tuning (POTE): ~2 = 1\1, ~3/2 = 706.029, ~14/13 = 132.428
 
{{Optimal ET sequence|legend=1| 8d, 9, 10, 17c, 19, 27e, 36 }}
 
Badness: 0.727 × 10<sup>-3</sup>
 
Projection pairs: ~5 = 6912/1331, ~7 = 854/121, ~13 = 144/11 to 2.3.11
 
== Notes ==
 
[[Category:Temperament families]]
[[Category:Pages with mostly numerical content]]
[[Category:Sengic family| ]] <!-- main article -->
[[Category:Sengic| ]] <!-- key article -->
[[Category:Rank 3]]
Retrieved from "https://en.xen.wiki/w/Sengic_family"