Comma pump: Difference between revisions
Wikispaces>Ninly **Imported revision 247000437 - Original comment: cleanup** |
Wikispaces>keenanpepper **Imported revision 274102578 - Original comment: ** |
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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:keenanpepper|keenanpepper]] and made on <tt>2011-11-10 13:55:34 UTC</tt>.<br> | ||
: The original revision id was <tt> | : The original revision id was <tt>274102578</tt>.<br> | ||
: The revision comment was: <tt> | : 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> | 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">A **comma pump** is a harmonic sequence wherein the tuning base shifts up or down by one [[comma]]. | <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 **comma pump** is a harmonic sequence (or chord progression) wherein the tuning base shifts up or down by one [[comma]]. This means that in [[Just intonation|JI]], the chord prgression would not return to the original starting pitch, but a different pitch that is a comma off. If the chord progression is repeated many times, the tuning will steadily rise or fall (and also an unlimited number of different pitches would be required). | ||
for examples of comma pumps, see [[ | If, on the other hand, the chord progression is played in a [[Regular Temperaments|temperament]] in which the comma vanishes, it does return to exactly the same starting pitch. This means that comma pumps are very characteristic chord progressions of a particular temperament family. For example, Western classical and popular music is in [[Meantone|meantone]] or [[12edo]], which tempers out 81/80, and accordingly [[Meantone comma pump examples|81/80 comma pumps]] are very familiar chord progressions. Comma pumps corresponding to other commas of 12edo, for example 128/125 or 225/224, may form the basis of interesting chord progressions in jazz or other 12edo music. | ||
For other examples of comma pumps, see [[Comma pump examples]].</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>comma pump</title></head><body>A <strong>comma pump</strong> is a harmonic sequence wherein the tuning base shifts up or down by one <a class="wiki_link" href="/comma">comma</a>.<br /> | <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>comma pump</title></head><body>A <strong>comma pump</strong> is a harmonic sequence (or chord progression) wherein the tuning base shifts up or down by one <a class="wiki_link" href="/comma">comma</a>. This means that in <a class="wiki_link" href="/Just%20intonation">JI</a>, the chord prgression would not return to the original starting pitch, but a different pitch that is a comma off. If the chord progression is repeated many times, the tuning will steadily rise or fall (and also an unlimited number of different pitches would be required).<br /> | ||
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If, on the other hand, the chord progression is played in a <a class="wiki_link" href="/Regular%20Temperaments">temperament</a> in which the comma vanishes, it does return to exactly the same starting pitch. This means that comma pumps are very characteristic chord progressions of a particular temperament family. For example, Western classical and popular music is in <a class="wiki_link" href="/Meantone">meantone</a> or <a class="wiki_link" href="/12edo">12edo</a>, which tempers out 81/80, and accordingly <a class="wiki_link" href="/Meantone%20comma%20pump%20examples">81/80 comma pumps</a> are very familiar chord progressions. Comma pumps corresponding to other commas of 12edo, for example 128/125 or 225/224, may form the basis of interesting chord progressions in jazz or other 12edo music.<br /> | |||
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For other examples of comma pumps, see <a class="wiki_link" href="/Comma%20pump%20examples">Comma pump examples</a>.</body></html></pre></div> | |||