25edo
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[[toc|flat]] =<span style="color: #006b2e; font-family: 'Times New Roman',Times,serif; font-size: 113%;">25 tone equal temperament</span>= 25EDO divides the [[octave]] in 25 equal steps of exact size 48 [[cent]]s each. It is a good way to tune the [[Blackwood temperament]], which takes the very sharp fifths of [[5EDO]] as a given, tempers out 28/27 and 49/48, and attempts to optimize the tunings for 5 ([[5_4|5/4]]) and 7 ([[7_4|7/4]]). It also tunes sixix temperament with a sharp fifth. It supplies the optimal patent val for the 11-limit 6&25 temperament tempering out 49/48, 77/75 and 605/576, and the 13-limit extension also tempering out 66/65. 25EDO has fifths 18 cents sharp, but its major thirds are excellent and its 7/4 is acceptable. Moreover, in full 7-limit icluding the 3, it is not [[consistent]]. It therefore makes sense to use it as a 2.5.7 [[Just intonation subgroups|subgroup]] tuning. Looking just at 2, 5, and 7, it equates five [[8_7|8/7]]s with the octave, and so tempers out (8/7)^5 / 2 = 16807/16384. It also equates a [[128_125|128/125]] [[diesis]] and two [[septimal tritones]] of [[7_5|7/5]] with the octave, and hence tempers out 3136/3125. If we want to temper out both of these and also have decent fifths, the obvious solution is [[50EDO]]. An alternative fifth, 14\25, which is 672 cents, provides an alternative very flat fifth which can be used for [[mavila]] temperament. If 5/4 and 7/4 aren't good enough, it also does 17/16 and 19/16, just like 12EDO. In fact, on the [[k*N subgroups|2*25 subgroup]] 2.9.5.7.33.39.17.19 it provides the same tuning and tempers out the same commas as 50et, which makes for a wide range of harmony. =Music= //[[http://clones.soonlabel.com/public/micro/gene_ward_smith/Others/Rapoport/StudyInFives.mp3|Study in Fives]]// by [[http://en.wikipedia.org/wiki/Paul_Rapoport_%28music_critic%29|Paul Rapoport]] [[http://chrisvaisvil.com/?p=2377|Fantasy for Piano in 25 Note per Octave Tuning]] //[[http://micro.soonlabel.com/25edo/fantasy_for_piano_in_25_edo.mp3|play]]// by Chris Vaisvil //[[http://micro.soonlabel.com/gene_ward_smith/Others/Fiale/flat%20fourth%20blues.mp3|Flat fourth blues]]// by Fabrizio Fulvio Fausto Fiale [[media type="file" key="25edochorale.mid" width="300" height="50"]] [[file:25edochorale.mid]] Peter Kosmorsky (10/14/10, 2.5.7 subgroup, a friend responded "The <span class="il">25edo</span> canon has a nice theme, but all the harmonizations from there are laughably dissonant. I showed them to my roomie and he found it disturbing, hahaha. He had an unintentional physical reaction to it with his mouth in which his muscles did a smirk sort of thing, without him even trying to, hahaha. So, my point; this I think this 25 edo idea was an example of where tonal thinking doesn't suit the sound of the scale.") [[media type="file" key="25 edo prelude largo.mid" width="300" height="50"]] [[file:25 edo prelude largo.mid]] Peter Kosmorsky (2011, Blackwood) =Intervals= || Degrees || Cents value ||= Approximate Ratios* ||= Armodue Notation || || 0 || 0 0° ||= 1/1 ||= 1 || || 1 || 48, //57.6// 14°24' ||= 33/32, 39/38, 34/33 ||= 1# || || 2 || 96, //115.2// 28°48' ||= 17/16, 20/19, 18/17 ||= 2b || || 3 || 144, //172.8// 43°12' ||= 12/11, 38/35 ||= 2 || || 4 || 192, //230.4// 57°36' ||= 9/8, 10/9, 19/17 ||= 2# || || 5· || 240, 288 72° ||= 8/7 ||= 3b || || 6 || 288, //345.6// 86°24' ||= 19/16, 20/17 ||= 3 || || 7 || 336, //403.2// 100°48' ||= 39/32, 17/14, 40/33 ||= 3# || || 8· || 384, //460.8// 115°12' ||= 5/4 ||= 4b || || 9 || 432, //518.4// 129°36' ||= 9/7, 32/25, 50/39 ||= 4 || || 10 || 480, 576 144° ||= 33/25, 25/19 ||= 4#/5b || || 11· || 528, //633.6// 158°24' ||= 31/21, 34/25 ||= 5 || || 12 || 576, //691.2// 172°48' ||= 7/5, 39/28 ||= 5# || || 13 || 624, //748.8// 187°12' ||= 10/7, 56/39 ||= 6b || || 14· || 672, //806.4// 201°36' ||= 42/31, 25/17 ||= 6 || || 15 || 720, 864 216° ||= 50/33, 38/25 ||= 6# || || 16 || 768, //921.6// 230°24' ||= 14/9, 25/16, 39/25 ||= 7b || || 17· || 816, //979.2// 244°48' ||= 8/5 ||= 7 || || 18 || 864, //1036.8// 259°12' ||= 64/39, 28/17, 33/20 ||= 7# || || 19 || 912, //1094.4// 273°36' ||= 32/19, 17/10 ||= 8b || || 20· || 960, 1152 288° ||= 7/4 ||= 8 || || 21 || 1008, //1209.6// 302°14' ||= 16/9, 9/5, 34/19 ||= 8# || || 22 || 1056, //1267.2// 316°48' ||= 11/6, 35/19 ||= 9b || || 23 || 1104, //1324.8// 331°12' ||= 32/17, 17/9, 19/10 ||= 9 || || 24 || 1152, //1382.4// 345°36' ||= 33/17, 64/33, 76/39 ||= 9#/1b || || 25 || 1200, 1440 360° ||= 2/1 ||= 1 || *based on treating 25-EDO as a 2.9.5.7.33.39.17.19 subgroup; other approaches are possible. [[media type="custom" key="25100128"]] [[file:25ed2-001.svg]] =Relationship to Armodue= Like [[16edo|16-EDO]] and [[23edo|23-EDO]], 25-EDO contains the 9-note "Superdiatonic" scale of [[7L 2s|7L2s]] (LLLsLLLLs) that is generated by a circle of heavily-flattened 3/2s (ranging in size from 5\9-EDO or 666.67 cents, to 4\7-EDO or 685.71 cents). The 25-EDO generator for this scale is the 672-cent interval. This allows 25-EDO to be used with the [[Armodue theory|Armodue]] notation system in much the same way that [[19edo|19-EDO]] is used with the standard diatonic notation; see the above interval chart for the Armodue names. Because the 25-EDO Armodue 6th is flatter than that of 16-EDO (the middle of the Armodue spectrum), sharps are lower in pitch than enharmonic flats. =Commas= 25 EDO tempers out the following commas. (Note: This assumes the val < [[tel/25 40 58 70 86 93|25 40 58 70 86 93]] |.) ||~ Comma ||~ Monzo ||~ Value (Cents) ||~ Name 1 ||~ Name 2 ||~ Name 3 || ||= 256/243 ||< | 8 -5 > ||> 90.22 ||= Limma ||= Pythagorean Minor 2nd ||= || ||= 3125/3072 ||< | -10 -1 5 > ||> 29.61 ||= Small Diesis ||= Magic Comma ||= || ||= [[tel:6719816/6714445|6719816/6714445]] ||< | 38 -2 -15 > ||> 1.38 ||= Hemithirds Comma ||= ||= || ||= 16807/16384 || | -14 0 0 5 > ||> 44.13 || || || || ||= 49/48 ||< | -4 -1 0 2 > ||> 35.70 ||= Slendro Diesis ||= ||= || ||= 64/63 ||< | 6 -2 0 -1 > ||> 27.26 ||= Septimal Comma ||= Archytas' Comma ||= Leipziger Komma || ||= 3125/3087 ||< | 0 -2 5 -3 > ||> 21.18 ||= Gariboh ||= ||= || ||= 50421/50000 ||< | -4 1 -5 5 > ||> 14.52 ||= Trimyna ||= ||= || ||= 1029/1024 ||< | -10 1 0 3 > ||> 8.43 ||= Gamelisma ||= ||= || ||= 3136/3125 ||< | 6 0 -5 2 > ||> 6.08 ||= Hemimean ||= ||= || ||= 65625/65536 ||< | -16 1 5 1 > ||> 2.35 ||= Horwell ||= ||= || ||= 100/99 ||< | 2 -2 2 0 -1 > ||> 17.40 ||= Ptolemisma ||= ||= || ||= 176/175 ||< | 4 0 -2 -1 1 > ||> 9.86 ||= Valinorsma ||= ||= || ||= 91/90 ||< | -1 -2 -1 1 0 1 > ||> 19.13 ||= Superleap ||= ||= || ||= 676/675 ||< | 2 -3 -2 0 0 2 > ||> 2.56 ||= Parizeksma ||= ||= || =A 25edo keyboard= [[image:mm25.PNG]]
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<html><head><title>25edo</title></head><body><!-- ws:start:WikiTextTocRule:15:<img id="wikitext@@toc@@flat" class="WikiMedia WikiMediaTocFlat" title="Table of Contents" src="/site/embedthumbnail/toc/flat?w=100&h=16"/> --><!-- ws:end:WikiTextTocRule:15 --><!-- ws:start:WikiTextTocRule:16: --><a href="#x25 tone equal temperament">25 tone equal temperament</a><!-- ws:end:WikiTextTocRule:16 --><!-- ws:start:WikiTextTocRule:17: --> | <a href="#Music">Music</a><!-- ws:end:WikiTextTocRule:17 --><!-- ws:start:WikiTextTocRule:18: --> | <a href="#Intervals">Intervals</a><!-- ws:end:WikiTextTocRule:18 --><!-- ws:start:WikiTextTocRule:19: --> | <a href="#Relationship to Armodue">Relationship to Armodue</a><!-- ws:end:WikiTextTocRule:19 --><!-- ws:start:WikiTextTocRule:20: --> | <a href="#Commas">Commas</a><!-- ws:end:WikiTextTocRule:20 --><!-- ws:start:WikiTextTocRule:21: --> | <a href="#A 25edo keyboard">A 25edo keyboard</a><!-- ws:end:WikiTextTocRule:21 --><!-- ws:start:WikiTextTocRule:22: --> <!-- ws:end:WikiTextTocRule:22 --><!-- ws:start:WikiTextHeadingRule:3:<h1> --><h1 id="toc0"><a name="x25 tone equal temperament"></a><!-- ws:end:WikiTextHeadingRule:3 --><span style="color: #006b2e; font-family: 'Times New Roman',Times,serif; font-size: 113%;">25 tone equal temperament</span></h1> <br /> 25EDO divides the <a class="wiki_link" href="/octave">octave</a> in 25 equal steps of exact size 48 <a class="wiki_link" href="/cent">cent</a>s each. It is a good way to tune the <a class="wiki_link" href="/Blackwood%20temperament">Blackwood temperament</a>, which takes the very sharp fifths of <a class="wiki_link" href="/5EDO">5EDO</a> as a given, tempers out 28/27 and 49/48, and attempts to optimize the tunings for 5 (<a class="wiki_link" href="/5_4">5/4</a>) and 7 (<a class="wiki_link" href="/7_4">7/4</a>). It also tunes sixix temperament with a sharp fifth. It supplies the optimal patent val for the 11-limit 6&25 temperament tempering out 49/48, 77/75 and 605/576, and the 13-limit extension also tempering out 66/65.<br /> <br /> 25EDO has fifths 18 cents sharp, but its major thirds are excellent and its 7/4 is acceptable. Moreover, in full 7-limit icluding the 3, it is not <a class="wiki_link" href="/consistent">consistent</a>. It therefore makes sense to use it as a 2.5.7 <a class="wiki_link" href="/Just%20intonation%20subgroups">subgroup</a> tuning. Looking just at 2, 5, and 7, it equates five <a class="wiki_link" href="/8_7">8/7</a>s with the octave, and so tempers out (8/7)^5 / 2 = 16807/16384. It also equates a <a class="wiki_link" href="/128_125">128/125</a> <a class="wiki_link" href="/diesis">diesis</a> and two <a class="wiki_link" href="/septimal%20tritones">septimal tritones</a> of <a class="wiki_link" href="/7_5">7/5</a> with the octave, and hence tempers out 3136/3125. If we want to temper out both of these and also have decent fifths, the obvious solution is <a class="wiki_link" href="/50EDO">50EDO</a>. An alternative fifth, 14\25, which is 672 cents, provides an alternative very flat fifth which can be used for <a class="wiki_link" href="/mavila">mavila</a> temperament.<br /> <br /> If 5/4 and 7/4 aren't good enough, it also does 17/16 and 19/16, just like 12EDO. In fact, on the <a class="wiki_link" href="/k%2AN%20subgroups">2*25 subgroup</a> 2.9.5.7.33.39.17.19 it provides the same tuning and tempers out the same commas as 50et, which makes for a wide range of harmony.<br /> <br /> <!-- ws:start:WikiTextHeadingRule:5:<h1> --><h1 id="toc1"><a name="Music"></a><!-- ws:end:WikiTextHeadingRule:5 -->Music</h1> <em><a class="wiki_link_ext" href="http://clones.soonlabel.com/public/micro/gene_ward_smith/Others/Rapoport/StudyInFives.mp3" rel="nofollow">Study in Fives</a></em> by <a class="wiki_link_ext" href="http://en.wikipedia.org/wiki/Paul_Rapoport_%28music_critic%29" rel="nofollow">Paul Rapoport</a><br /> <a class="wiki_link_ext" href="http://chrisvaisvil.com/?p=2377" rel="nofollow">Fantasy for Piano in 25 Note per Octave Tuning</a> <em><a class="wiki_link_ext" href="http://micro.soonlabel.com/25edo/fantasy_for_piano_in_25_edo.mp3" rel="nofollow">play</a></em> by Chris Vaisvil<br /> <em><a class="wiki_link_ext" href="http://micro.soonlabel.com/gene_ward_smith/Others/Fiale/flat%20fourth%20blues.mp3" rel="nofollow">Flat fourth blues</a></em> by Fabrizio Fulvio Fausto Fiale<br /> <br /> <!-- ws:start:WikiTextMediaRule:0:<img src="http://www.wikispaces.com/site/embedthumbnail/file-audio/25edochorale.mid?h=50&w=300" class="WikiMedia WikiMediaFile" id="wikitext@@media@@type=&quot;file&quot; key=&quot;25edochorale.mid&quot; width=&quot;300&quot; height=&quot;50&quot;" title="Local Media File"height="50" width="300"/> --><embed type="audio/midi" style="cursor:hand; cursor:pointer;" src="http://xenharmonic.wikispaces.com/file/view/25edochorale.mid" width="300" height="50" autoplay="false" target="myself" controller="true" loop="false" scale="aspect" bgcolor="#FFFFFF" pluginspage="http://www.apple.com/quicktime/download/"></embed><!-- ws:end:WikiTextMediaRule:0 --> <!-- ws:start:WikiTextFileRule:522:<img src="http://www.wikispaces.com/site/embedthumbnail/file/25edochorale.mid?h=52&w=320" class="WikiFile" id="wikitext@@file@@25edochorale.mid" title="File: 25edochorale.mid" width="320" height="52" /> --><div class="objectEmbed"><a href="/file/view/25edochorale.mid/314425794/25edochorale.mid" onclick="ws.common.trackFileLink('/file/view/25edochorale.mid/314425794/25edochorale.mid');"><img src="http://www.wikispaces.com/i/mime/32/empty.png" height="32" width="32" alt="25edochorale.mid" /></a><div><a href="/file/view/25edochorale.mid/314425794/25edochorale.mid" onclick="ws.common.trackFileLink('/file/view/25edochorale.mid/314425794/25edochorale.mid');" class="filename" title="25edochorale.mid">25edochorale.mid</a><br /><ul><li><a href="/file/detail/25edochorale.mid">Details</a></li><li><a href="/file/view/25edochorale.mid/314425794/25edochorale.mid">Download</a></li><li style="color: #666">4 KB</li></ul></div></div><!-- ws:end:WikiTextFileRule:522 --> Peter Kosmorsky (10/14/10, 2.5.7 subgroup, a friend responded "The <span class="il">25edo</span> canon has a nice theme, but all the harmonizations from there are laughably dissonant. I showed them to my roomie and he found it disturbing, hahaha. He had an unintentional physical reaction to it with his mouth in which his muscles did a smirk sort of thing, without him even trying to, hahaha. So, my point; this I think this 25 edo idea was an example of where tonal thinking doesn't suit the sound of the scale.")<br /> <!-- ws:start:WikiTextMediaRule:1:<img src="http://www.wikispaces.com/site/embedthumbnail/file-audio/25%20edo%20prelude%20largo.mid?h=50&w=300" class="WikiMedia WikiMediaFile" id="wikitext@@media@@type=&quot;file&quot; key=&quot;25 edo prelude largo.mid&quot; width=&quot;300&quot; height=&quot;50&quot;" title="Local Media File"height="50" width="300"/> --><embed type="audio/midi" style="cursor:hand; cursor:pointer;" src="http://xenharmonic.wikispaces.com/file/view/25+edo+prelude+largo.mid" width="300" height="50" autoplay="false" target="myself" controller="true" loop="false" scale="aspect" bgcolor="#FFFFFF" pluginspage="http://www.apple.com/quicktime/download/"></embed><!-- ws:end:WikiTextMediaRule:1 --> <!-- ws:start:WikiTextFileRule:523:<img src="http://www.wikispaces.com/site/embedthumbnail/file/25%20edo%20prelude%20largo.mid?h=52&w=320" class="WikiFile" 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KB</li></ul></div></div><!-- ws:end:WikiTextFileRule:523 --> Peter Kosmorsky (2011, Blackwood)<br /> <br /> <!-- ws:start:WikiTextHeadingRule:7:<h1> --><h1 id="toc2"><a name="Intervals"></a><!-- ws:end:WikiTextHeadingRule:7 -->Intervals</h1> <br /> <table class="wiki_table"> <tr> <td>Degrees<br /> </td> <td>Cents value<br /> </td> <td style="text-align: center;">Approximate<br /> Ratios*<br /> </td> <td style="text-align: center;">Armodue<br /> Notation<br /> </td> </tr> <tr> <td>0<br /> </td> <td>0<br /> 0°<br /> </td> <td style="text-align: center;">1/1<br /> </td> <td style="text-align: center;">1<br /> </td> </tr> <tr> <td>1<br /> </td> <td>48, <em>57.6</em><br /> 14°24'<br /> </td> <td style="text-align: center;">33/32, 39/38, 34/33<br /> </td> <td style="text-align: center;">1#<br /> </td> </tr> <tr> <td>2<br /> </td> <td>96, <em>115.2</em><br /> 28°48'<br /> </td> <td style="text-align: center;">17/16, 20/19, 18/17<br /> </td> <td style="text-align: center;">2b<br /> </td> </tr> <tr> <td>3<br /> </td> <td>144, <em>172.8</em><br /> 43°12'<br /> </td> <td style="text-align: center;">12/11, 38/35<br /> </td> <td style="text-align: center;">2<br /> </td> </tr> <tr> <td>4<br /> </td> <td>192, <em>230.4</em><br /> 57°36'<br /> </td> <td style="text-align: center;">9/8, 10/9, 19/17<br /> </td> <td style="text-align: center;">2#<br /> </td> </tr> <tr> <td>5·<br /> </td> <td>240, 288<br /> 72°<br /> </td> <td style="text-align: center;">8/7<br /> </td> <td style="text-align: center;">3b<br /> </td> </tr> <tr> <td>6<br /> </td> <td>288, <em>345.6</em><br /> 86°24'<br /> </td> <td style="text-align: center;">19/16, 20/17<br /> </td> <td style="text-align: center;">3<br /> </td> </tr> <tr> <td>7<br /> </td> <td>336, <em>403.2</em><br /> 100°48'<br /> </td> <td style="text-align: center;">39/32, 17/14, 40/33<br /> </td> <td style="text-align: center;">3#<br /> </td> </tr> <tr> <td>8·<br /> </td> <td>384, <em>460.8</em><br /> 115°12'<br /> </td> <td style="text-align: center;">5/4<br /> </td> <td style="text-align: center;">4b<br /> </td> </tr> <tr> <td>9<br /> </td> <td>432, <em>518.4</em><br /> 129°36'<br /> </td> <td style="text-align: center;">9/7, 32/25, 50/39<br /> </td> <td style="text-align: center;">4<br /> </td> </tr> <tr> <td>10<br /> </td> <td>480, 576<br /> 144°<br /> </td> <td style="text-align: center;">33/25, 25/19<br /> </td> <td style="text-align: center;">4#/5b<br /> </td> </tr> <tr> <td>11·<br /> </td> <td>528, <em>633.6</em><br /> 158°24'<br /> </td> <td style="text-align: center;">31/21, 34/25<br /> </td> <td style="text-align: center;">5<br /> </td> </tr> <tr> <td>12<br /> </td> <td>576, <em>691.2</em><br /> 172°48'<br /> </td> <td style="text-align: center;">7/5, 39/28<br /> </td> <td style="text-align: center;">5#<br /> </td> </tr> <tr> <td>13<br /> </td> <td>624, <em>748.8</em><br /> 187°12'<br /> </td> <td style="text-align: center;">10/7, 56/39<br /> </td> <td style="text-align: center;">6b<br /> </td> </tr> <tr> <td>14·<br /> </td> <td>672, <em>806.4</em><br /> 201°36'<br /> </td> <td style="text-align: center;">42/31, 25/17<br /> </td> <td style="text-align: center;">6<br /> </td> </tr> <tr> <td>15<br /> </td> <td>720, 864<br /> 216°<br /> </td> <td style="text-align: center;">50/33, 38/25<br /> </td> <td style="text-align: center;">6#<br /> </td> </tr> <tr> <td>16<br /> </td> <td>768, <em>921.6</em><br /> 230°24'<br /> </td> <td style="text-align: center;">14/9, 25/16, 39/25<br /> </td> <td style="text-align: center;">7b<br /> </td> </tr> <tr> <td>17·<br /> </td> <td>816, <em>979.2</em><br /> 244°48'<br /> </td> <td style="text-align: center;">8/5<br /> </td> <td style="text-align: center;">7<br /> </td> </tr> <tr> <td>18<br /> </td> <td>864, <em>1036.8</em><br /> 259°12'<br /> </td> <td style="text-align: center;">64/39, 28/17, 33/20<br /> </td> <td style="text-align: center;">7#<br /> </td> </tr> <tr> <td>19<br /> </td> <td>912, <em>1094.4</em><br /> 273°36'<br /> </td> <td style="text-align: center;">32/19, 17/10<br /> </td> <td style="text-align: center;">8b<br /> </td> </tr> <tr> <td>20·<br /> </td> <td>960, 1152<br /> 288°<br /> </td> <td style="text-align: center;">7/4<br /> </td> <td style="text-align: center;">8<br /> </td> </tr> <tr> <td>21<br /> </td> <td>1008, <em>1209.6</em><br /> 302°14'<br /> </td> <td style="text-align: center;">16/9, 9/5, 34/19<br /> </td> <td style="text-align: center;">8#<br /> </td> </tr> <tr> <td>22<br /> </td> <td>1056, <em>1267.2</em><br /> 316°48'<br /> </td> <td style="text-align: center;">11/6, 35/19<br /> </td> <td style="text-align: center;">9b<br /> </td> </tr> <tr> <td>23<br /> </td> <td>1104, <em>1324.8</em><br /> 331°12'<br /> </td> <td style="text-align: center;">32/17, 17/9, 19/10<br /> </td> <td style="text-align: center;">9<br /> </td> </tr> <tr> <td>24<br /> </td> <td>1152, <em>1382.4</em><br /> 345°36'<br /> </td> <td style="text-align: center;">33/17, 64/33, 76/39<br /> </td> <td style="text-align: center;">9#/1b<br /> </td> </tr> <tr> <td>25<br /> </td> <td>1200, 1440<br /> 360°<br /> </td> <td style="text-align: center;">2/1<br /> </td> <td style="text-align: center;">1<br /> </td> </tr> </table> *based on treating 25-EDO as a 2.9.5.7.33.39.17.19 subgroup; other approaches are possible.<br /> <br /> <!-- ws:start:WikiTextMediaRule:2:<img src="http://www.wikispaces.com/site/embedthumbnail/custom/25100128?h=0&w=0" class="WikiMedia WikiMediaCustom" id="wikitext@@media@@type=&quot;custom&quot; key=&quot;25100128&quot;" title="Custom Media"/> --><object id="example" type="image/svg+xml" data="http://xenharmonic.wikispaces.com/file/view/25ed2-001.svg">alt : Your browser has no SVG support.</object><!-- ws:end:WikiTextMediaRule:2 --><br /> <br /> <!-- ws:start:WikiTextFileRule:524:<img src="http://www.wikispaces.com/site/embedthumbnail/file/25ed2-001.svg?h=52&w=320" class="WikiFile" id="wikitext@@file@@25ed2-001.svg" title="File: 25ed2-001.svg" width="320" height="52" /> --><div 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href="/23edo">23-EDO</a>, 25-EDO contains the 9-note "Superdiatonic" scale of <a class="wiki_link" href="/7L%202s">7L2s</a> (LLLsLLLLs) that is generated by a circle of heavily-flattened 3/2s (ranging in size from 5\9-EDO or 666.67 cents, to 4\7-EDO or 685.71 cents). The 25-EDO generator for this scale is the 672-cent interval. This allows 25-EDO to be used with the <a class="wiki_link" href="/Armodue%20theory">Armodue</a> notation system in much the same way that <a class="wiki_link" href="/19edo">19-EDO</a> is used with the standard diatonic notation; see the above interval chart for the Armodue names. Because the 25-EDO Armodue 6th is flatter than that of 16-EDO (the middle of the Armodue spectrum), sharps are lower in pitch than enharmonic flats.<br /> <br /> <!-- ws:start:WikiTextHeadingRule:11:<h1> --><h1 id="toc4"><a name="Commas"></a><!-- ws:end:WikiTextHeadingRule:11 -->Commas</h1> 25 EDO tempers out the following commas. (Note: This assumes the val < <a class="wiki_link" href="http://tel.wikispaces.com/25%2040%2058%2070%2086%2093">25 40 58 70 86 93</a> |.)<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 style="text-align: center;">256/243<br /> </td> <td style="text-align: left;">| 8 -5 ><br /> </td> <td style="text-align: right;">90.22<br /> </td> <td style="text-align: center;">Limma<br /> </td> <td style="text-align: center;">Pythagorean Minor 2nd<br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">3125/3072<br /> </td> <td style="text-align: left;">| -10 -1 5 ><br /> </td> <td style="text-align: right;">29.61<br /> </td> <td style="text-align: center;">Small Diesis<br /> </td> <td style="text-align: center;">Magic Comma<br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">[[tel:6719816/6714445|6719816/6714445]]<br /> </td> <td style="text-align: left;">| 38 -2 -15 ><br /> </td> <td style="text-align: right;">1.38<br /> </td> <td style="text-align: center;">Hemithirds Comma<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">16807/16384<br /> </td> <td>| -14 0 0 5 ><br /> </td> <td style="text-align: right;">44.13<br /> </td> <td><br /> </td> <td><br /> </td> <td><br /> </td> </tr> <tr> <td style="text-align: center;">49/48<br /> </td> <td style="text-align: left;">| -4 -1 0 2 ><br /> </td> <td style="text-align: right;">35.70<br /> </td> <td style="text-align: center;">Slendro Diesis<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">64/63<br /> </td> <td style="text-align: left;">| 6 -2 0 -1 ><br /> </td> <td style="text-align: right;">27.26<br /> </td> <td style="text-align: center;">Septimal Comma<br /> </td> <td style="text-align: center;">Archytas' Comma<br /> </td> <td style="text-align: center;">Leipziger Komma<br /> </td> </tr> <tr> <td style="text-align: center;">3125/3087<br /> </td> <td style="text-align: left;">| 0 -2 5 -3 ><br /> </td> <td style="text-align: right;">21.18<br /> </td> <td style="text-align: center;">Gariboh<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">50421/50000<br /> </td> <td style="text-align: left;">| -4 1 -5 5 ><br /> </td> <td style="text-align: right;">14.52<br /> </td> <td style="text-align: center;">Trimyna<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">1029/1024<br /> </td> <td style="text-align: left;">| -10 1 0 3 ><br /> </td> <td style="text-align: right;">8.43<br /> </td> <td style="text-align: center;">Gamelisma<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">3136/3125<br /> </td> <td style="text-align: left;">| 6 0 -5 2 ><br /> </td> <td style="text-align: right;">6.08<br /> </td> <td style="text-align: center;">Hemimean<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">65625/65536<br /> </td> <td style="text-align: left;">| -16 1 5 1 ><br /> </td> <td style="text-align: right;">2.35<br /> </td> <td style="text-align: center;">Horwell<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">100/99<br /> </td> <td style="text-align: left;">| 2 -2 2 0 -1 ><br /> </td> <td style="text-align: right;">17.40<br /> </td> <td style="text-align: center;">Ptolemisma<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">176/175<br /> </td> <td style="text-align: left;">| 4 0 -2 -1 1 ><br /> </td> <td style="text-align: right;">9.86<br /> </td> <td style="text-align: center;">Valinorsma<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">91/90<br /> </td> <td style="text-align: left;">| -1 -2 -1 1 0 1 ><br /> </td> <td style="text-align: right;">19.13<br /> </td> <td style="text-align: center;">Superleap<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> <tr> <td style="text-align: center;">676/675<br /> </td> <td style="text-align: left;">| 2 -3 -2 0 0 2 ><br /> </td> <td style="text-align: right;">2.56<br /> </td> <td style="text-align: center;">Parizeksma<br /> </td> <td style="text-align: center;"><br /> </td> <td style="text-align: center;"><br /> </td> </tr> </table> <br /> <!-- ws:start:WikiTextHeadingRule:13:<h1> --><h1 id="toc5"><a name="A 25edo keyboard"></a><!-- ws:end:WikiTextHeadingRule:13 -->A 25edo keyboard</h1> <br /> <!-- ws:start:WikiTextLocalImageRule:521:<img src="/file/view/mm25.PNG/179204243/mm25.PNG" alt="" title="" /> --><img src="/file/view/mm25.PNG/179204243/mm25.PNG" alt="mm25.PNG" title="mm25.PNG" /><!-- ws:end:WikiTextLocalImageRule:521 --></body></html>