Wikispaces>Andrew_Heathwaite |
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| <h2>IMPORTED REVISION FROM WIKISPACES</h2>
| | A "superfourth" is an interval too wide to sound like a [[Perfect_fourth|perfect fourth]] and too narrow to sound like a [[tritone|tritone]]. [[Margo_Schulter|Margo Schulter]], in her article [http://www.bestii.com/%7Emschulter/IntervalSpectrumRegions.txt Regions of the Interval Spectrum], proposes an approximate range for a superfourth to be from 528¢ to 560¢. Some of the simplest superfourths in [[Just_intonation|Just Intonation]] are [[11/8|11/8]] (about 551.3¢) and [[15/11|15/11]] (about 537¢), both undecimal (11-based) superfourths; and [[48/35|48/35]] (about 546.8¢) and [[49/36|49/36]] (about 533.7¢), both septimal (7-based) superfourths. |
| This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br>
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| : This revision was by author [[User:Andrew_Heathwaite|Andrew_Heathwaite]] and made on <tt>2011-10-10 14:13:58 UTC</tt>.<br>
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| : The original revision id was <tt>263315524</tt>.<br>
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| : The revision comment was: <tt></tt><br>
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| The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br>
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| <h4>Original Wikitext content:</h4>
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| <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">A "superfourth" is an interval too wide to sound like a [[perfect fourth]] and too narrow to sound like a [[tritone]]. [[Margo Schulter]], in her article [[http://www.bestii.com/%7Emschulter/IntervalSpectrumRegions.txt|Regions of the Interval Spectrum]], proposes an approximate range for a superfourth to be from 528¢ to 560¢. Some of the simplest superfourths in [[Just Intonation]] are [[11_8|11/8]] (about 551.3¢) and [[15_11|15/11]] (about 537¢), both undecimal (11-based) superfourths; and [[48_35|48/35]] (about 546.8¢) and [[49_36|49/36]] (about 533.7¢), both septimal (7-based) superfourths.
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| The inversion of a superfourth is a [[subfifth]]. | | The inversion of a superfourth is a [[Subfifth|subfifth]]. |
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| Of course, it should never be taken for granted that these categories are subjective and culturally influenced, and the borders are "fuzzy". Other description are possible and legitimate. | | Of course, it should never be taken for granted that these categories are subjective and culturally influenced, and the borders are "fuzzy". Other description are possible and legitimate. |
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| ==Examples== | | ==Examples== |
| Below is a list of some intervals in the superfourth range, both just and tempered. | | Below is a list of some intervals in the superfourth range, both just and tempered. |
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| ||~ Interval ||~ Cents Value ||~ Prime Limit (if applicable) || | | {| class="wikitable" |
| || 6\[[88cET]] or 11\[[25edo]] || 528.000 || - || | | |- |
| || [[19_14|19/14]] || 528.687 || 19 || | | ! | Interval |
| || 87/64 || 531.532 || 29 || | | ! | Cents Value |
| || 34/25 || 532.328 || 17 || | | ! | Prime Limit (if applicable) |
| || 4\[[9edo]] || 533.333 || - || | | |- |
| || [[49_36|49/36]] || 533.742 || 7 || | | | | 6\[[88cET|88cET]] or 11\[[25edo|25edo]] |
| || 64/47 || 534.493 || 47 || | | | | 528.000 |
| || [[15_11|15/11]] || 536.951 || 11 || | | | | - |
| || 13\[[29edo]] || 537.931 || - || | | |- |
| || 56/41 || 539.764 || 41 || | | | | [[19/14|19/14]] |
| || 9\[[20edo]] || 540.000 || - || | | | | 528.687 |
| || 41/30 || 540.794 || 41 || | | | | 19 |
| || 175/128 || 541.453 || 7 || | | |- |
| || 14\[[31edo]] || 541.935 || - || | | | | 87/64 |
| || [[26_19|26/19]] || 543.015 || 19 || | | | | 531.532 |
| || 5\[[11edo]] || 545.455 || - || | | | | 29 |
| || 37/27 || 545.479 || 37 || | | |- |
| || [[48_35|48/35]] || 546.815 || 7 || | | | | 34/25 |
| || 11\[[24edo]] || 550.000 || - || | | | | 532.328 |
| || [[11_8|11/8]] || 551.318 || 11 || | | | | 17 |
| || 6\[[13edo]] || 553.846 || - || | | |- |
| || 62/45 || 554.812 || 31 || | | | | 4\[[9edo|9edo]] |
| || 40/29 || 556.737 || 29 || | | | | 533.333 |
| || 13\[[28edo]] || 557.143 || - || | | | | - |
| || 243/176 || 558.457 || 11 || | | |- |
| || 29/21 || 558.796 || 29 || | | | | [[49/36|49/36]] |
| || 47/34 || 560.551 || 47 || | | | | 533.742 |
| || 7\[[15edo]] || 560.000 || - || | | | | 7 |
| | |- |
| | | | 64/47 |
| | | | 534.493 |
| | | | 47 |
| | |- |
| | | | [[15/11|15/11]] |
| | | | 536.951 |
| | | | 11 |
| | |- |
| | | | 13\[[29edo|29edo]] |
| | | | 537.931 |
| | | | - |
| | |- |
| | | | 56/41 |
| | | | 539.764 |
| | | | 41 |
| | |- |
| | | | 9\[[20edo|20edo]] |
| | | | 540.000 |
| | | | - |
| | |- |
| | | | 41/30 |
| | | | 540.794 |
| | | | 41 |
| | |- |
| | | | 175/128 |
| | | | 541.453 |
| | | | 7 |
| | |- |
| | | | 14\[[31edo|31edo]] |
| | | | 541.935 |
| | | | - |
| | |- |
| | | | [[26/19|26/19]] |
| | | | 543.015 |
| | | | 19 |
| | |- |
| | | | 5\[[11edo|11edo]] |
| | | | 545.455 |
| | | | - |
| | |- |
| | | | 37/27 |
| | | | 545.479 |
| | | | 37 |
| | |- |
| | | | [[48/35|48/35]] |
| | | | 546.815 |
| | | | 7 |
| | |- |
| | | | 11\[[24edo|24edo]] |
| | | | 550.000 |
| | | | - |
| | |- |
| | | | [[11/8|11/8]] |
| | | | 551.318 |
| | | | 11 |
| | |- |
| | | | 6\[[13edo|13edo]] |
| | | | 553.846 |
| | | | - |
| | |- |
| | | | 62/45 |
| | | | 554.812 |
| | | | 31 |
| | |- |
| | | | 40/29 |
| | | | 556.737 |
| | | | 29 |
| | |- |
| | | | 13\[[28edo|28edo]] |
| | | | 557.143 |
| | | | - |
| | |- |
| | | | 243/176 |
| | | | 558.457 |
| | | | 11 |
| | |- |
| | | | 29/21 |
| | | | 558.796 |
| | | | 29 |
| | |- |
| | | | 47/34 |
| | | | 560.551 |
| | | | 47 |
| | |- |
| | | | 7\[[15edo|15edo]] |
| | | | 560.000 |
| | | | - |
| | |} |
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| | | See: [[interval_category|Interval Category]], [[Gallery_of_Just_Intervals|Gallery of Just Intervals]] [[Category:superfourth]] |
| See: [[Interval Category]], [[Gallery of Just Intervals]]</pre></div> | |
| <h4>Original HTML content:</h4>
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| <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>Superfourth</title></head><body>A &quot;superfourth&quot; is an interval too wide to sound like a <a class="wiki_link" href="/perfect%20fourth">perfect fourth</a> and too narrow to sound like a <a class="wiki_link" href="/tritone">tritone</a>. <a class="wiki_link" href="/Margo%20Schulter">Margo Schulter</a>, in her article <a class="wiki_link_ext" href="http://www.bestii.com/%7Emschulter/IntervalSpectrumRegions.txt" rel="nofollow">Regions of the Interval Spectrum</a>, proposes an approximate range for a superfourth to be from 528¢ to 560¢. Some of the simplest superfourths in <a class="wiki_link" href="/Just%20Intonation">Just Intonation</a> are <a class="wiki_link" href="/11_8">11/8</a> (about 551.3¢) and <a class="wiki_link" href="/15_11">15/11</a> (about 537¢), both undecimal (11-based) superfourths; and <a class="wiki_link" href="/48_35">48/35</a> (about 546.8¢) and <a class="wiki_link" href="/49_36">49/36</a> (about 533.7¢), both septimal (7-based) superfourths.<br />
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| <br />
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| The inversion of a superfourth is a <a class="wiki_link" href="/subfifth">subfifth</a>.<br />
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| <br />
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| Of course, it should never be taken for granted that these categories are subjective and culturally influenced, and the borders are &quot;fuzzy&quot;. Other description are possible and legitimate.<br />
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| <br />
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| <!-- ws:start:WikiTextHeadingRule:0:&lt;h2&gt; --><h2 id="toc0"><a name="x-Examples"></a><!-- ws:end:WikiTextHeadingRule:0 -->Examples</h2>
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| Below is a list of some intervals in the superfourth range, both just and tempered.<br />
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| <table class="wiki_table">
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| <tr>
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| <th>Interval<br />
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| </th>
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| <th>Cents Value<br />
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| </th>
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| <th>Prime Limit (if applicable)<br />
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| </th>
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| </tr>
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| <tr>
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| <td>6\<a class="wiki_link" href="/88cET">88cET</a> or 11\<a class="wiki_link" href="/25edo">25edo</a><br />
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| </td>
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| <td>528.000<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td><a class="wiki_link" href="/19_14">19/14</a><br />
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| </td>
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| <td>528.687<br />
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| </td>
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| <td>19<br />
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| </td>
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| </tr>
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| <tr>
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| <td>87/64<br />
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| </td>
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| <td>531.532<br />
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| </td>
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| <td>29<br />
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| </td>
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| </tr>
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| <tr>
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| <td>34/25<br />
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| </td>
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| <td>532.328<br />
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| </td>
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| <td>17<br />
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| </td>
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| </tr>
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| <tr>
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| <td>4\<a class="wiki_link" href="/9edo">9edo</a><br />
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| </td>
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| <td>533.333<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td><a class="wiki_link" href="/49_36">49/36</a><br />
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| </td>
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| <td>533.742<br />
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| </td>
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| <td>7<br />
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| </td>
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| </tr>
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| <tr>
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| <td>64/47<br />
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| </td>
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| <td>534.493<br />
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| </td>
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| <td>47<br />
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| </td>
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| </tr>
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| <tr>
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| <td><a class="wiki_link" href="/15_11">15/11</a><br />
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| </td>
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| <td>536.951<br />
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| </td>
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| <td>11<br />
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| </td>
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| </tr>
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| <tr>
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| <td>13\<a class="wiki_link" href="/29edo">29edo</a><br />
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| </td>
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| <td>537.931<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td>56/41<br />
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| </td>
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| <td>539.764<br />
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| </td>
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| <td>41<br />
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| </td>
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| </tr>
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| <tr>
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| <td>9\<a class="wiki_link" href="/20edo">20edo</a><br />
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| </td>
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| <td>540.000<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td>41/30<br />
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| </td>
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| <td>540.794<br />
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| </td>
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| <td>41<br />
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| </td>
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| </tr>
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| <tr>
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| <td>175/128<br />
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| </td>
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| <td>541.453<br />
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| </td>
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| <td>7<br />
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| </td>
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| </tr>
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| <tr>
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| <td>14\<a class="wiki_link" href="/31edo">31edo</a><br />
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| </td>
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| <td>541.935<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td><a class="wiki_link" href="/26_19">26/19</a><br />
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| </td>
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| <td>543.015<br />
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| </td>
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| <td>19<br />
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| </td>
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| </tr>
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| <tr>
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| <td>5\<a class="wiki_link" href="/11edo">11edo</a><br />
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| </td>
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| <td>545.455<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td>37/27<br />
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| </td>
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| <td>545.479<br />
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| </td>
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| <td>37<br />
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| </td>
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| </tr>
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| <tr>
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| <td><a class="wiki_link" href="/48_35">48/35</a><br />
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| </td>
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| <td>546.815<br />
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| </td>
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| <td>7<br />
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| </td>
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| </tr>
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| <tr>
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| <td>11\<a class="wiki_link" href="/24edo">24edo</a><br />
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| </td>
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| <td>550.000<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td><a class="wiki_link" href="/11_8">11/8</a><br />
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| </td>
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| <td>551.318<br />
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| </td>
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| <td>11<br />
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| </td>
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| </tr>
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| <tr>
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| <td>6\<a class="wiki_link" href="/13edo">13edo</a><br />
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| </td>
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| <td>553.846<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td>62/45<br />
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| </td>
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| <td>554.812<br />
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| </td>
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| <td>31<br />
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| </td>
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| </tr>
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| <tr>
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| <td>40/29<br />
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| </td>
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| <td>556.737<br />
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| </td>
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| <td>29<br />
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| </td>
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| </tr>
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| <tr>
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| <td>13\<a class="wiki_link" href="/28edo">28edo</a><br />
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| </td>
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| <td>557.143<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| <tr>
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| <td>243/176<br />
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| </td>
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| <td>558.457<br />
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| </td>
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| <td>11<br />
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| </td>
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| </tr>
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| <tr>
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| <td>29/21<br />
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| </td>
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| <td>558.796<br />
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| </td>
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| <td>29<br />
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| </td>
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| </tr>
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| <tr>
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| <td>47/34<br />
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| </td>
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| <td>560.551<br />
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| </td>
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| <td>47<br />
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| </td>
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| </tr>
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| <tr>
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| <td>7\<a class="wiki_link" href="/15edo">15edo</a><br />
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| </td>
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| <td>560.000<br />
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| </td>
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| <td>-<br />
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| </td>
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| </tr>
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| </table>
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| <br />
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| <br />
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| See: <a class="wiki_link" href="/Interval%20Category">Interval Category</a>, <a class="wiki_link" href="/Gallery%20of%20Just%20Intervals">Gallery of Just Intervals</a></body></html></pre></div>
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