5/4: Difference between revisions

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<h2>IMPORTED REVISION FROM WIKISPACES</h2>
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: This revision was by author [[User:genewardsmith|genewardsmith]] and made on <tt>2013-09-02 06:41:24 UTC</tt>.<br>
| en = 5/4
: The original revision id was <tt>448027552</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>
| ro = 5/4 (ro)
<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">In [[Just Intonation]], **5/4** is the frequency ratio between the 5th and 4th harmonics. Measuring about 386.3[[Cent|¢]], it is about 13.7¢ away from [[12edo]]'s major third of 400¢. It has a distinctive "sweet" sound, and has been described as more "laid back" than its 12edo counterpart. Providing a novel consonance after 3, it is the basis for [[5-limit]] harmony. It is distinguished from the [[Pythagorean]] major third of [[81_64|81/64]] by the syntonic comma of [[81_80|81/80]], which measures about 21.5¢. 81/64 and 5/4 are both just intonation "major thirds," 81/64 having a more active and discordant quality, 5/4 sounding more "restful".
{{Infobox Interval
| Name = just major third, classic(al) major third, ptolemaic major third
| Color name = y3, yo 3rd
| Sound = jid_5_4_pluck_adu_dr220.mp3
}}
{{Wikipedia|Major third}}


In the context of the harmonic series, 5/4 can be heard between the 4th and 5th member of the series, demonstrated here melodically in singing into a resonant udderbot (from the fundamental up to 5 and then noodling between 5 and 4). [[file:5-4.mp3]] Hear it?
In [[5-limit]] [[just intonation]], '''5/4''' is the [[frequency ratio]] between the 5th and 4th [[harmonic]]s. It has been called the '''just major third''', '''classic(al) major third''', or '''ptolemaic major third'''<ref>For reference, see [[5-limit]].</ref> to distinguish it from other intervals in that neighborhood. Measuring about 386.3 [[cent|¢]], it is about 13.7{{c}} away from [[12edo]]'s major third of 400{{c}}. It has a distinctive "sweet" sound, and has been described as more "laid back" than its 12edo counterpart. Providing a novel consonance after 3, it is the basis for [[5-limit]] harmony. It is distinguished from the [[Pythagorean]] major third of [[81/64]] by the syntonic comma of [[81/80]], which measures about 21.5{{c}}, and from the Pythagorean diminished fourth of [[8192/6561]] by the [[schisma]], which measures about 1.95{{c}}. 81/64 and 5/4 are both just intonation "major thirds", 81/64 having a more active and discordant quality, 5/4 sounding more "restful".  


5/4 converted to cents (¢): 1200 * log (5/4) / log (2) = 386.314...
In the context of the harmonic series, 5/4 can be heard between the 4th and 5th member of the series, demonstrated in [[:File: 5-4.mp3]] melodically in singing into a resonant [[udderbot]] (from the fundamental up to 5 and then noodling between 5 and 4).


When two notes sound a 5/4 together,
== Approximations by edos ==
Following [[edo]]s (up to 200) contain good approximations<ref>error magnitude below 7, both, absolute (in ¢) and relative (in r¢)</ref> of the interval 5/4.
{{Interval edo approximation|interval = 5/4| max_edo=200}}


5/4 the interval, like all //intervals//, refers to a //relation// between two pitches. We speak of this relation (one pitch beating 5/4 times as fast as the other) after we are able to distinguish it from other relations.
== See also ==
* [[8/5]] – its [[octave complement]]
* [[6/5]] – its [[fifth complement]]
* [[16/15]] – its [[fourth complement]]
* [[5/2]] – the interval up one [[octave]] which sounds even more [[consonant]]
* [[Ed5/4]]
* [[Gallery of just intervals]]
* [[List of superparticular intervals]]


In relation to 12 tone equal, 5/4 is about 13.7¢ flatter than the 4th degree (400¢). 5/4 the interval has been called the //just major third// to distinguish it from the other intervals in that neighborhood.
== Notes ==
<references/>


==5/4 quotes==
[[Category:Third]]
got any?
[[Category:Major third]]
 
See: [[Gallery of Just Intervals]]</pre></div>
<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">&lt;html&gt;&lt;head&gt;&lt;title&gt;5_4&lt;/title&gt;&lt;/head&gt;&lt;body&gt;In &lt;a class="wiki_link" href="/Just%20Intonation"&gt;Just Intonation&lt;/a&gt;, &lt;strong&gt;5/4&lt;/strong&gt; is the frequency ratio between the 5th and 4th harmonics. Measuring about 386.3&lt;a class="wiki_link" href="/Cent"&gt;¢&lt;/a&gt;, it is about 13.7¢ away from &lt;a class="wiki_link" href="/12edo"&gt;12edo&lt;/a&gt;'s major third of 400¢. It has a distinctive &amp;quot;sweet&amp;quot; sound, and has been described as more &amp;quot;laid back&amp;quot; than its 12edo counterpart. Providing a novel consonance after 3, it is the basis for &lt;a class="wiki_link" href="/5-limit"&gt;5-limit&lt;/a&gt; harmony. It is distinguished from the &lt;a class="wiki_link" href="/Pythagorean"&gt;Pythagorean&lt;/a&gt; major third of &lt;a class="wiki_link" href="/81_64"&gt;81/64&lt;/a&gt; by the syntonic comma of &lt;a class="wiki_link" href="/81_80"&gt;81/80&lt;/a&gt;, which measures about 21.5¢. 81/64 and 5/4 are both just intonation &amp;quot;major thirds,&amp;quot; 81/64 having a more active and discordant quality, 5/4 sounding more &amp;quot;restful&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
In the context of the harmonic series, 5/4 can be heard between the 4th and 5th member of the series, demonstrated here melodically in singing into a resonant udderbot (from the fundamental up to 5 and then noodling between 5 and 4). &lt;!-- ws:start:WikiTextFileRule:2:&amp;lt;img src=&amp;quot;http://www.wikispaces.com/site/embedthumbnail/file/5-4.mp3?h=52&amp;amp;w=320&amp;quot; class=&amp;quot;WikiFile&amp;quot; id=&amp;quot;wikitext@@file@@5-4.mp3&amp;quot; title=&amp;quot;File: 5-4.mp3&amp;quot; width=&amp;quot;320&amp;quot; height=&amp;quot;52&amp;quot; /&amp;gt; --&gt;&lt;div class="objectEmbed"&gt;&lt;a href="/file/view/5-4.mp3/30382423/5-4.mp3" onclick="ws.common.trackFileLink('/file/view/5-4.mp3/30382423/5-4.mp3');"&gt;&lt;img src="http://www.wikispaces.com/i/mime/32/audio/mpeg.png" height="32" width="32" alt="5-4.mp3" /&gt;&lt;/a&gt;&lt;div&gt;&lt;a href="/file/view/5-4.mp3/30382423/5-4.mp3" onclick="ws.common.trackFileLink('/file/view/5-4.mp3/30382423/5-4.mp3');" class="filename" title="5-4.mp3"&gt;5-4.mp3&lt;/a&gt;&lt;br /&gt;&lt;ul&gt;&lt;li&gt;&lt;a href="/file/detail/5-4.mp3"&gt;Details&lt;/a&gt;&lt;/li&gt;&lt;li&gt;&lt;a href="/file/view/5-4.mp3/30382423/5-4.mp3"&gt;Download&lt;/a&gt;&lt;/li&gt;&lt;li style="color: #666"&gt;402 KB&lt;/li&gt;&lt;/ul&gt;&lt;/div&gt;&lt;/div&gt;&lt;!-- ws:end:WikiTextFileRule:2 --&gt; Hear it?&lt;br /&gt;
&lt;br /&gt;
5/4 converted to cents (¢): 1200 * log (5/4) / log (2) = 386.314...&lt;br /&gt;
&lt;br /&gt;
When two notes sound a 5/4 together,&lt;br /&gt;
&lt;br /&gt;
5/4 the interval, like all &lt;em&gt;intervals&lt;/em&gt;, refers to a &lt;em&gt;relation&lt;/em&gt; between two pitches. We speak of this relation (one pitch beating 5/4 times as fast as the other) after we are able to distinguish it from other relations.&lt;br /&gt;
&lt;br /&gt;
In relation to 12 tone equal, 5/4 is about 13.7¢ flatter than the 4th degree (400¢). 5/4 the interval has been called the &lt;em&gt;just major third&lt;/em&gt; to distinguish it from the other intervals in that neighborhood.&lt;br /&gt;
&lt;br /&gt;
&lt;!-- ws:start:WikiTextHeadingRule:0:&amp;lt;h2&amp;gt; --&gt;&lt;h2 id="toc0"&gt;&lt;a name="x-5/4 quotes"&gt;&lt;/a&gt;&lt;!-- ws:end:WikiTextHeadingRule:0 --&gt;5/4 quotes&lt;/h2&gt;
got any?&lt;br /&gt;
&lt;br /&gt;
See: &lt;a class="wiki_link" href="/Gallery%20of%20Just%20Intervals"&gt;Gallery of Just Intervals&lt;/a&gt;&lt;/body&gt;&lt;/html&gt;</pre></div>
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