25/21: Difference between revisions

25/21, the quasi-tempered minor third, is the interval between 6/5 and 10/7, and also 7/5 and 5/3. It is 126/125 flat of 6/5, and tempering 126/125 out makes the 1-6/5-10/7 triad into a diminished triad where two minor thirds make up a tritone. It is extremely close to 3 steps of 12edo (300 cents).

25/21 is also an important interval in the Bohlen-Pierce scale, where it represents a "BP whole tone", i.e. the large step in the Lambda scale.

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-<h2>IMPORTED REVISION FROM WIKISPACES</h2>
+{{Infobox Interval
-This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br>
+| Name = quasi-tempered minor third
-: This revision was by author [[User:genewardsmith|genewardsmith]] and made on <tt>2012-02-12 20:43:28 UTC</tt>.<br>
+| Color name = ryy2, ruyoyo 2nd
-: The original revision id was <tt>301054618</tt>.<br>
+| Sound = jid_25_21_pluck_adu_dr220.mp3
-: 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>
+'''25/21''', the '''quasi-tempered minor third''', is the interval between [[6/5]] and [[10/7]], and also [[7/5]] and [[5/3]]. It is [[126/125]] flat of [[6/5]], and tempering 126/125 out makes the 1-6/5-10/7 triad into a [[diminished triad]] where two minor thirds make up a [[tritone]]. It is extremely close to 3 steps of [[12edo]] (300 cents).
-<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">25/21, the quasi-tempered minor third, is the interval between [[6_5|6/5]] and [[10_7|10/7]], and also [[7_5|7/5]] and [[5_3|5/3]]. It is 126/125 flat of 6/5, and tempering 126/125 out makes the 1-6/5-10/7 triad into a diminished triad where two minor thirds make up a tritone.</pre></div>
+/21 is also an important interval in the [[Bohlen-Pierce scale]], where it represents a "BP whole tone", i.e. the large step in the [[4L 5s (3/1-equivalent)|Lambda scale]].
-<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;25_21&lt;/title&gt;&lt;/head&gt;&lt;body&gt;25/21, the quasi-tempered minor third, is the interval between &lt;a class="wiki_link" href="/6_5"&gt;6/5&lt;/a&gt; and &lt;a class="wiki_link" href="/10_7"&gt;10/7&lt;/a&gt;, and also &lt;a class="wiki_link" href="/7_5"&gt;7/5&lt;/a&gt; and &lt;a class="wiki_link" href="/5_3"&gt;5/3&lt;/a&gt;. It is 126/125 flat of 6/5, and tempering 126/125 out makes the 1-6/5-10/7 triad into a diminished triad where two minor thirds make up a tritone.&lt;/body&gt;&lt;/html&gt;</pre></div>
+== See also ==
+* [[42/25]] - its [[octave complement]]
+* [[63/50]] - its [[fifth complement]]
+* [[28/25]] – its [[fourth complement]]
+* [[Gallery of just intervals]]
+* [[:File:Ji-25-21-csound-foscil-220hz.mp3]] - another sound example
+[[Category:Third]]
+[[Category:Minor third]]
+[[Category:Starling]]

25/21: Difference between revisions

Latest revision as of 18:13, 1 January 2025

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