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| <h2>IMPORTED REVISION FROM WIKISPACES</h2> | | <span style="display: block; text-align: right;">[[:de:Kommapumpe Deutsch]]</span> |
| 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:hstraub|hstraub]] and made on <tt>2016-07-08 17:58:52 UTC</tt>.<br>
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| : The original revision id was <tt>586719195</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"><span style="display: block; text-align: right;">[[xenharmonie/Kommapumpe|Deutsch]]
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| 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).
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| 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.
| | A '''comma pump''' is a harmonic sequence (or chord progression) wherein the tuning base shifts up or down by one [[Comma|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). |
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| For other examples of comma pumps, see [[Comma pump examples]].</pre></div>
| | 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|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. |
| <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>comma pump</title></head><body><span style="display: block; text-align: right;"><a class="wiki_link" href="http://xenharmonie.wikispaces.com/Kommapumpe">Deutsch</a><br />
| | For other examples of comma pumps, see [[Comma_pump_examples|Comma pump examples]]. |
| </span><br />
| | [[Category:definition]] |
| 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 />
| | [[Category:term]] |
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| | [[Category:todo:review]] |
| 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> | |