22edo: Difference between revisions
Wikispaces>xenwolf **Imported revision 216121588 - Original comment: some links added** |
Wikispaces>jdfreivald **Imported revision 233342942 - Original comment: Added comma table.** |
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<h2>IMPORTED REVISION FROM WIKISPACES</h2> | <h2>IMPORTED REVISION FROM WIKISPACES</h2> | ||
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br> | ||
: This revision was by author [[User: | : This revision was by author [[User:jdfreivald|jdfreivald]] and made on <tt>2011-05-31 21:53:36 UTC</tt>.<br> | ||
: The original revision id was <tt> | : The original revision id was <tt>233342942</tt>.<br> | ||
: The revision comment was: <tt> | : The revision comment was: <tt>Added comma table.</tt><br> | ||
The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<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> | <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">[[toc|flat]] | <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">[[toc|flat]] | ||
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In the 7-limit 22-et tempers out certain commas also tempered out by 12-et; this relates 12 equal to 22 in a way different from the way in which meantone systems are akin to it. Both [[50_49|50/49]], (the [[jubilee comma]]), and [[64_63|64/63]], (the [[septimal comma]]), are tempered out in both systems. Hence because of 50/49 they both equate the two septimal tritons of 7/5 and 10/7, and because of 64/63 they both do not distinguish between a dominant seventh chord and a utonal tetrad. Hence both also temper out (50/49)/(64/63) = 225/224, the [[septimal kleisma]], so that the septimal kleisma augmented triad is a chord of 22-et, as it also is of any meantone tuning. A septimal comma not tempered out by 12-et which 22-et does temper out is 1728/1715, the [[orwell comma]]; and the [[orwell tetrad]] is also a chord of 22-et. | In the 7-limit 22-et tempers out certain commas also tempered out by 12-et; this relates 12 equal to 22 in a way different from the way in which meantone systems are akin to it. Both [[50_49|50/49]], (the [[jubilee comma]]), and [[64_63|64/63]], (the [[septimal comma]]), are tempered out in both systems. Hence because of 50/49 they both equate the two septimal tritons of 7/5 and 10/7, and because of 64/63 they both do not distinguish between a dominant seventh chord and a utonal tetrad. Hence both also temper out (50/49)/(64/63) = 225/224, the [[septimal kleisma]], so that the septimal kleisma augmented triad is a chord of 22-et, as it also is of any meantone tuning. A septimal comma not tempered out by 12-et which 22-et does temper out is 1728/1715, the [[orwell comma]]; and the [[orwell tetrad]] is also a chord of 22-et. | ||
===Commas=== | |||
22 EDO tempers out the following commas. (Note: This assumes the val < 22 35 51 62 76 81 |.) | |||
||~ Comma ||~ Monzo ||~ Value (Cents) ||~ Name 1 ||~ Name 2 ||~ Name 3 || | |||
|| 250/243 || | 1 -5 3 > || 49.17 || Maximal Diesis || Porcupine Comma || || | |||
|| 3125/3072 || | -10 -1 5 > || 29.61 || Small Diesis || Magic Comma || || | |||
|| 2048/2025 || | 11 -4 -2 > || 19.55 || Diaschisma || || || | |||
|| 2109375/2097152 || | -21 3 7 > || 10.06 || Semicomma || Fokker Comma || || | |||
|| 9193891/9143623 || | 32 -7 -9 > || 9.49 |||| Escapade Comma || || | |||
|| 4758837/4757272 || | -53 10 16 > || 0.57 || Kwazy || || || | |||
|| 50/49 || | 1 0 2 -2 > || 34.98 || Tritonic Diesis || Jubilisma || || | |||
|| 64/63 || | 6 -2 0 -1 > || 27.26 || Septimal Comma || Archytas' Comma || Leipziger Komma || | |||
|| 875/864 || | -5 -3 3 1 > || 21.90 || Keema || || || | |||
|| 2430/2401 || | 1 5 1 -4 > || 20.79 || Nuwell || || || | |||
|| 245/243 || | 0 -5 1 2 > || 14.19 || Sensamagic || || || | |||
|| 1728/1715 || | 6 3 -1 -3 > || 13.07 || Orwellisma || Orwell Comma || || | |||
|| 225/224 || | -5 2 2 -1 > || 7.71 || Septimal Kleisma || Marvel Comma || || | |||
|| 10976/10935 || | 5 -7 -1 3 > || 6.48 || Hemimage || || || | |||
|| 6144/6125 || | 11 1 -3 -2 > || 5.36 || Porwell || || || | |||
|| 65625/65536 || | -16 1 5 1 > || 2.35 || Horwell || || || | |||
|| 420175/419904 || | -6 -8 2 5 > || 1.12 || Wizma || || || | |||
|| 99/98 || | -1 2 0 -2 1 > || 17.58 || Mothwellsma || || || | |||
|| 100/99 || | 2 -2 2 0 -1 > || 17.40 || Ptolemisma || || || | |||
|| 121/120 || | -3 -1 -1 0 2 > || 14.37 || Biyatisma || || || | |||
|| 176/175 || | 4 0 -2 -1 1 > || 9.86 || Valinorsma || || || | |||
|| 896/891 || | 7 -4 0 1 -1 > || 9.69 || Pentacircle || || || | |||
|| 65536/65219 || | 16 0 0 -2 -3 > || 8.39 || Orgonisma || || || | |||
|| 385/384 || | -7 -1 1 1 1 > || 4.50 || Keenanisma || || || | |||
|| 540/539 || | 2 3 1 -2 -1 > || 3.21 || Swetisma || || || | |||
|| 4000/3993 || | 5 -1 3 0 -3 > || 3.03 || Wizardharry || || || | |||
|| 9801/9800 || | -3 4 -2 -2 2 > || 0.18 || Kalisma || Gauss' Comma || || | |||
|| 91/90 || | -1 -2 -1 1 0 1 > || 19.13 || Superleap || || || | |||
===A Superpythagorean System=== | ===A Superpythagorean System=== | ||
| Line 36: | Line 66: | ||
==External links== | ==External links== | ||
[[http://lumma.org/tuning/erlich/erlich-decatonic.pdf | [[http://lumma.org/tuning/erlich/erlich-decatonic.pdf|Erlich, Paul, ''Tuning, Tonality, and Twenty-Two Tone Temperament'']] | ||
|Erlich, Paul, ''Tuning, Tonality, and Twenty-Two Tone Temperament'']] | |||
==References== | ==References== | ||
| Line 59: | Line 88: | ||
[[http://soundclick.com/share?songid=8839060|being a]] by Andrew Heathwaite (porcupine-8: 3 1 3 3 3 3 3). | [[http://soundclick.com/share?songid=8839060|being a]] by Andrew Heathwaite (porcupine-8: 3 1 3 3 3 3 3). | ||
[[http://soundclick.com/share?songid=8839071|my own house]] by Andrew Heathwaite (a pelog-flavored subset of orwell-9: 3 2 7 3 7). | [[http://soundclick.com/share?songid=8839071|my own house]] by Andrew Heathwaite (a pelog-flavored subset of orwell-9: 3 2 7 3 7). | ||
[[http://www.archive.org/download/NightOnPorcupineMountain/Genewardsmithmussorgsky-NightOnPorcupineMountain.mp3|Night on Porcupine Mountain]] Mussorgsky-Smith</pre></div> | [[http://www.archive.org/download/NightOnPorcupineMountain/Genewardsmithmussorgsky-NightOnPorcupineMountain.mp3|Night on Porcupine Mountain]] Mussorgsky-Smith | ||
<span style="display: block; height: 1px; left: -10000px; overflow: hidden; position: absolute; top: 613px; width: 1px;"> | |||
|| < 22 35 51 62 76 81 | || | |||
</span></pre></div> | |||
<h4>Original HTML content:</h4> | <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"><html><head><title>22edo</title></head><body><!-- ws:start:WikiTextTocRule: | <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"><html><head><title>22edo</title></head><body><!-- ws:start:WikiTextTocRule:16:&lt;img id=&quot;wikitext@@toc@@flat&quot; class=&quot;WikiMedia WikiMediaTocFlat&quot; title=&quot;Table of Contents&quot; src=&quot;/site/embedthumbnail/toc/flat?w=100&amp;h=16&quot;/&gt; --><!-- ws:end:WikiTextTocRule:16 --><!-- ws:start:WikiTextTocRule:17: --><a href="#Theory">Theory</a><!-- ws:end:WikiTextTocRule:17 --><!-- ws:start:WikiTextTocRule:18: --><!-- ws:end:WikiTextTocRule:18 --><!-- ws:start:WikiTextTocRule:19: --><!-- ws:end:WikiTextTocRule:19 --><!-- ws:start:WikiTextTocRule:20: --><!-- ws:end:WikiTextTocRule:20 --><!-- ws:start:WikiTextTocRule:21: --><!-- ws:end:WikiTextTocRule:21 --><!-- ws:start:WikiTextTocRule:22: --><!-- ws:end:WikiTextTocRule:22 --><!-- ws:start:WikiTextTocRule:23: --><!-- ws:end:WikiTextTocRule:23 --><!-- ws:start:WikiTextTocRule:24: --> | <a href="#Compositions">Compositions</a><!-- ws:end:WikiTextTocRule:24 --><!-- ws:start:WikiTextTocRule:25: --> | ||
<!-- ws:end:WikiTextTocRule: | <!-- ws:end:WikiTextTocRule:25 --><br /> | ||
<br /> | |||
<hr /> | <hr /> | ||
<!-- ws:start:WikiTextHeadingRule:0:&lt;h1&gt; --><h1 id="toc0"><a name="Theory"></a><!-- ws:end:WikiTextHeadingRule:0 -->Theory</h1> | <!-- ws:start:WikiTextHeadingRule:0:&lt;h1&gt; --><h1 id="toc0"><a name="Theory"></a><!-- ws:end:WikiTextHeadingRule:0 -->Theory</h1> | ||
| Line 81: | Line 112: | ||
In the 7-limit 22-et tempers out certain commas also tempered out by 12-et; this relates 12 equal to 22 in a way different from the way in which meantone systems are akin to it. Both <a class="wiki_link" href="/50_49">50/49</a>, (the <a class="wiki_link" href="/jubilee%20comma">jubilee comma</a>), and <a class="wiki_link" href="/64_63">64/63</a>, (the <a class="wiki_link" href="/septimal%20comma">septimal comma</a>), are tempered out in both systems. Hence because of 50/49 they both equate the two septimal tritons of 7/5 and 10/7, and because of 64/63 they both do not distinguish between a dominant seventh chord and a utonal tetrad. Hence both also temper out (50/49)/(64/63) = 225/224, the <a class="wiki_link" href="/septimal%20kleisma">septimal kleisma</a>, so that the septimal kleisma augmented triad is a chord of 22-et, as it also is of any meantone tuning. A septimal comma not tempered out by 12-et which 22-et does temper out is 1728/1715, the <a class="wiki_link" href="/orwell%20comma">orwell comma</a>; and the <a class="wiki_link" href="/orwell%20tetrad">orwell tetrad</a> is also a chord of 22-et.<br /> | In the 7-limit 22-et tempers out certain commas also tempered out by 12-et; this relates 12 equal to 22 in a way different from the way in which meantone systems are akin to it. Both <a class="wiki_link" href="/50_49">50/49</a>, (the <a class="wiki_link" href="/jubilee%20comma">jubilee comma</a>), and <a class="wiki_link" href="/64_63">64/63</a>, (the <a class="wiki_link" href="/septimal%20comma">septimal comma</a>), are tempered out in both systems. Hence because of 50/49 they both equate the two septimal tritons of 7/5 and 10/7, and because of 64/63 they both do not distinguish between a dominant seventh chord and a utonal tetrad. Hence both also temper out (50/49)/(64/63) = 225/224, the <a class="wiki_link" href="/septimal%20kleisma">septimal kleisma</a>, so that the septimal kleisma augmented triad is a chord of 22-et, as it also is of any meantone tuning. A septimal comma not tempered out by 12-et which 22-et does temper out is 1728/1715, the <a class="wiki_link" href="/orwell%20comma">orwell comma</a>; and the <a class="wiki_link" href="/orwell%20tetrad">orwell tetrad</a> is also a chord of 22-et.<br /> | ||
<br /> | <br /> | ||
<!-- ws:start:WikiTextHeadingRule:4:&lt;h3&gt; --><h3 id="toc2"><a name="Theory-Properties of 22 equal temperament-A Superpythagorean System"></a><!-- ws:end:WikiTextHeadingRule: | <!-- ws:start:WikiTextHeadingRule:4:&lt;h3&gt; --><h3 id="toc2"><a name="Theory-Properties of 22 equal temperament-Commas"></a><!-- ws:end:WikiTextHeadingRule:4 -->Commas</h3> | ||
22 EDO tempers out the following commas. (Note: This assumes the val &lt; 22 35 51 62 76 81 |.)<br /> | |||
<table class="wiki_table"> | |||
<tr> | |||
<th>Comma<br /> | |||
</th> | |||
<th>Monzo<br /> | |||
</th> | |||
<th>Value (Cents)<br /> | |||
</th> | |||
<th>Name 1<br /> | |||
</th> | |||
<th>Name 2<br /> | |||
</th> | |||
<th>Name 3<br /> | |||
</th> | |||
</tr> | |||
<tr> | |||
<td>250/243<br /> | |||
</td> | |||
<td>| 1 -5 3 &gt;<br /> | |||
</td> | |||
<td>49.17<br /> | |||
</td> | |||
<td>Maximal Diesis<br /> | |||
</td> | |||
<td>Porcupine Comma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>3125/3072<br /> | |||
</td> | |||
<td>| -10 -1 5 &gt;<br /> | |||
</td> | |||
<td>29.61<br /> | |||
</td> | |||
<td>Small Diesis<br /> | |||
</td> | |||
<td>Magic Comma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>2048/2025<br /> | |||
</td> | |||
<td>| 11 -4 -2 &gt;<br /> | |||
</td> | |||
<td>19.55<br /> | |||
</td> | |||
<td>Diaschisma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>2109375/2097152<br /> | |||
</td> | |||
<td>| -21 3 7 &gt;<br /> | |||
</td> | |||
<td>10.06<br /> | |||
</td> | |||
<td>Semicomma<br /> | |||
</td> | |||
<td>Fokker Comma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>9193891/9143623<br /> | |||
</td> | |||
<td>| 32 -7 -9 &gt;<br /> | |||
</td> | |||
<td>9.49<br /> | |||
</td> | |||
<td colspan="2">Escapade Comma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>4758837/4757272<br /> | |||
</td> | |||
<td>| -53 10 16 &gt;<br /> | |||
</td> | |||
<td>0.57<br /> | |||
</td> | |||
<td>Kwazy<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>50/49<br /> | |||
</td> | |||
<td>| 1 0 2 -2 &gt;<br /> | |||
</td> | |||
<td>34.98<br /> | |||
</td> | |||
<td>Tritonic Diesis<br /> | |||
</td> | |||
<td>Jubilisma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>64/63<br /> | |||
</td> | |||
<td>| 6 -2 0 -1 &gt;<br /> | |||
</td> | |||
<td>27.26<br /> | |||
</td> | |||
<td>Septimal Comma<br /> | |||
</td> | |||
<td>Archytas' Comma<br /> | |||
</td> | |||
<td>Leipziger Komma<br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>875/864<br /> | |||
</td> | |||
<td>| -5 -3 3 1 &gt;<br /> | |||
</td> | |||
<td>21.90<br /> | |||
</td> | |||
<td>Keema<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>2430/2401<br /> | |||
</td> | |||
<td>| 1 5 1 -4 &gt;<br /> | |||
</td> | |||
<td>20.79<br /> | |||
</td> | |||
<td>Nuwell<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>245/243<br /> | |||
</td> | |||
<td>| 0 -5 1 2 &gt;<br /> | |||
</td> | |||
<td>14.19<br /> | |||
</td> | |||
<td>Sensamagic<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>1728/1715<br /> | |||
</td> | |||
<td>| 6 3 -1 -3 &gt;<br /> | |||
</td> | |||
<td>13.07<br /> | |||
</td> | |||
<td>Orwellisma<br /> | |||
</td> | |||
<td>Orwell Comma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>225/224<br /> | |||
</td> | |||
<td>| -5 2 2 -1 &gt;<br /> | |||
</td> | |||
<td>7.71<br /> | |||
</td> | |||
<td>Septimal Kleisma<br /> | |||
</td> | |||
<td>Marvel Comma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>10976/10935<br /> | |||
</td> | |||
<td>| 5 -7 -1 3 &gt;<br /> | |||
</td> | |||
<td>6.48<br /> | |||
</td> | |||
<td>Hemimage<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>6144/6125<br /> | |||
</td> | |||
<td>| 11 1 -3 -2 &gt;<br /> | |||
</td> | |||
<td>5.36<br /> | |||
</td> | |||
<td>Porwell<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>65625/65536<br /> | |||
</td> | |||
<td>| -16 1 5 1 &gt;<br /> | |||
</td> | |||
<td>2.35<br /> | |||
</td> | |||
<td>Horwell<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>420175/419904<br /> | |||
</td> | |||
<td>| -6 -8 2 5 &gt;<br /> | |||
</td> | |||
<td>1.12<br /> | |||
</td> | |||
<td>Wizma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>99/98<br /> | |||
</td> | |||
<td>| -1 2 0 -2 1 &gt;<br /> | |||
</td> | |||
<td>17.58<br /> | |||
</td> | |||
<td>Mothwellsma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>100/99<br /> | |||
</td> | |||
<td>| 2 -2 2 0 -1 &gt;<br /> | |||
</td> | |||
<td>17.40<br /> | |||
</td> | |||
<td>Ptolemisma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>121/120<br /> | |||
</td> | |||
<td>| -3 -1 -1 0 2 &gt;<br /> | |||
</td> | |||
<td>14.37<br /> | |||
</td> | |||
<td>Biyatisma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>176/175<br /> | |||
</td> | |||
<td>| 4 0 -2 -1 1 &gt;<br /> | |||
</td> | |||
<td>9.86<br /> | |||
</td> | |||
<td>Valinorsma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>896/891<br /> | |||
</td> | |||
<td>| 7 -4 0 1 -1 &gt;<br /> | |||
</td> | |||
<td>9.69<br /> | |||
</td> | |||
<td>Pentacircle<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>65536/65219<br /> | |||
</td> | |||
<td>| 16 0 0 -2 -3 &gt;<br /> | |||
</td> | |||
<td>8.39<br /> | |||
</td> | |||
<td>Orgonisma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>385/384<br /> | |||
</td> | |||
<td>| -7 -1 1 1 1 &gt;<br /> | |||
</td> | |||
<td>4.50<br /> | |||
</td> | |||
<td>Keenanisma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>540/539<br /> | |||
</td> | |||
<td>| 2 3 1 -2 -1 &gt;<br /> | |||
</td> | |||
<td>3.21<br /> | |||
</td> | |||
<td>Swetisma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>4000/3993<br /> | |||
</td> | |||
<td>| 5 -1 3 0 -3 &gt;<br /> | |||
</td> | |||
<td>3.03<br /> | |||
</td> | |||
<td>Wizardharry<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>9801/9800<br /> | |||
</td> | |||
<td>| -3 4 -2 -2 2 &gt;<br /> | |||
</td> | |||
<td>0.18<br /> | |||
</td> | |||
<td>Kalisma<br /> | |||
</td> | |||
<td>Gauss' Comma<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
<tr> | |||
<td>91/90<br /> | |||
</td> | |||
<td>| -1 -2 -1 1 0 1 &gt;<br /> | |||
</td> | |||
<td>19.13<br /> | |||
</td> | |||
<td>Superleap<br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
<td><br /> | |||
</td> | |||
</tr> | |||
</table> | |||
<!-- ws:start:WikiTextHeadingRule:6:&lt;h3&gt; --><h3 id="toc3"><a name="Theory-Properties of 22 equal temperament-A Superpythagorean System"></a><!-- ws:end:WikiTextHeadingRule:6 -->A Superpythagorean System</h3> | |||
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The 22edo fifth, measuring approximately 709.1 cents, is wider than the 702-cent <a class="wiki_link" href="/3-limit">3-limit</a> fifth, thus making 22edo a &quot;super-pythagorean&quot; system. As with any superpyth, a chain of fifths produces relatively wide major thirds and narrow minor thirds. In the case of 22edo, the thirds are stretched out to the <a class="wiki_link" href="/7-limit">7-limit</a> ; the <a class="wiki_link" href="/subminor%20third">subminor third</a> comes close to <a class="wiki_link" href="/7_6">7/6</a> and the <a class="wiki_link" href="/supermajor%20third">supermajor third</a> to <a class="wiki_link" href="/9_7">9/7</a>. Thus, the resulting diatonic scale, which no longer approximates 5-limit thirds, sounds oddly consonant. The ratio of major 2nd to minor 2nd in this diatonic scale is stretched out to 4:1, with the M2 falling between 9/8 and <a class="wiki_link" href="/8_7">8/7</a>, and the m2 falling close to a quarter-tone.<br /> | The 22edo fifth, measuring approximately 709.1 cents, is wider than the 702-cent <a class="wiki_link" href="/3-limit">3-limit</a> fifth, thus making 22edo a &quot;super-pythagorean&quot; system. As with any superpyth, a chain of fifths produces relatively wide major thirds and narrow minor thirds. In the case of 22edo, the thirds are stretched out to the <a class="wiki_link" href="/7-limit">7-limit</a> ; the <a class="wiki_link" href="/subminor%20third">subminor third</a> comes close to <a class="wiki_link" href="/7_6">7/6</a> and the <a class="wiki_link" href="/supermajor%20third">supermajor third</a> to <a class="wiki_link" href="/9_7">9/7</a>. Thus, the resulting diatonic scale, which no longer approximates 5-limit thirds, sounds oddly consonant. The ratio of major 2nd to minor 2nd in this diatonic scale is stretched out to 4:1, with the M2 falling between 9/8 and <a class="wiki_link" href="/8_7">8/7</a>, and the m2 falling close to a quarter-tone.<br /> | ||
<br /> | <br /> | ||
<!-- ws:start:WikiTextHeadingRule: | <!-- ws:start:WikiTextHeadingRule:8:&lt;h3&gt; --><h3 id="toc4"><a name="Theory-Properties of 22 equal temperament-11edo"></a><!-- ws:end:WikiTextHeadingRule:8 -->11edo</h3> | ||
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As 22 is divisible by 11, a 22edo instrument can play any music in <a class="wiki_link" href="/11edo">11edo</a>, in the same way that 12edo can play 6edo (the whole tone scale).<br /> | As 22 is divisible by 11, a 22edo instrument can play any music in <a class="wiki_link" href="/11edo">11edo</a>, in the same way that 12edo can play 6edo (the whole tone scale).<br /> | ||
<br /> | <br /> | ||
<!-- ws:start:WikiTextHeadingRule: | <!-- ws:start:WikiTextHeadingRule:10:&lt;h2&gt; --><h2 id="toc5"><a name="Theory-External links"></a><!-- ws:end:WikiTextHeadingRule:10 -->External links</h2> | ||
<br /> | <br /> | ||
<a class="wiki_link_ext" href="http://lumma.org/tuning/erlich/erlich-decatonic.pdf" rel="nofollow">Erlich, Paul, ''Tuning, Tonality, and Twenty-Two Tone Temperament''</a><br /> | <a class="wiki_link_ext" href="http://lumma.org/tuning/erlich/erlich-decatonic.pdf" rel="nofollow">Erlich, Paul, ''Tuning, Tonality, and Twenty-Two Tone Temperament''</a><br /> | ||
<br /> | <br /> | ||
<!-- ws:start:WikiTextHeadingRule: | <!-- ws:start:WikiTextHeadingRule:12:&lt;h2&gt; --><h2 id="toc6"><a name="Theory-References"></a><!-- ws:end:WikiTextHeadingRule:12 -->References</h2> | ||
<br /> | <br /> | ||
Barbour, James Murray, ''Tuning and temperament, a historical survey'', East Lansing, Michigan State College Press, 1953 [c1951]<br /> | Barbour, James Murray, ''Tuning and temperament, a historical survey'', East Lansing, Michigan State College Press, 1953 [c1951]<br /> | ||
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<hr /> | <hr /> | ||
<!-- ws:start:WikiTextHeadingRule: | <!-- ws:start:WikiTextHeadingRule:14:&lt;h1&gt; --><h1 id="toc7"><a name="Compositions"></a><!-- ws:end:WikiTextHeadingRule:14 -->Compositions</h1> | ||
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<a class="wiki_link_ext" href="http://music.columbia.edu/%7Echris/sounds/TIBIA.mp3" rel="nofollow">Tibia</a> by <a class="wiki_link" href="/Paul%20Erlich">Paul Erlich</a><br /> | <a class="wiki_link_ext" href="http://music.columbia.edu/%7Echris/sounds/TIBIA.mp3" rel="nofollow">Tibia</a> by <a class="wiki_link" href="/Paul%20Erlich">Paul Erlich</a><br /> | ||
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<a class="wiki_link_ext" href="http://soundclick.com/share?songid=8839060" rel="nofollow">being a</a> by Andrew Heathwaite (porcupine-8: 3 1 3 3 3 3 3).<br /> | <a class="wiki_link_ext" href="http://soundclick.com/share?songid=8839060" rel="nofollow">being a</a> by Andrew Heathwaite (porcupine-8: 3 1 3 3 3 3 3).<br /> | ||
<a class="wiki_link_ext" href="http://soundclick.com/share?songid=8839071" rel="nofollow">my own house</a> by Andrew Heathwaite (a pelog-flavored subset of orwell-9: 3 2 7 3 7).<br /> | <a class="wiki_link_ext" href="http://soundclick.com/share?songid=8839071" rel="nofollow">my own house</a> by Andrew Heathwaite (a pelog-flavored subset of orwell-9: 3 2 7 3 7).<br /> | ||
<a class="wiki_link_ext" href="http://www.archive.org/download/NightOnPorcupineMountain/Genewardsmithmussorgsky-NightOnPorcupineMountain.mp3" rel="nofollow">Night on Porcupine Mountain</a> Mussorgsky-Smith</body></html></pre></div> | <a class="wiki_link_ext" href="http://www.archive.org/download/NightOnPorcupineMountain/Genewardsmithmussorgsky-NightOnPorcupineMountain.mp3" rel="nofollow">Night on Porcupine Mountain</a> Mussorgsky-Smith<br /> | ||
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<table class="wiki_table"> | |||
<tr> | |||
<td>&lt; 22 35 51 62 76 81 |<br /> | |||
</td> | |||
</tr> | |||
</table> | |||
</span></body></html></pre></div> | |||