25edt: Difference between revisions

Wikispaces>JosephRuhf
**Imported revision 543142144 - Original comment: **
 
+subsets and supersets; +see also
 
(15 intermediate revisions by 8 users not shown)
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<h2>IMPORTED REVISION FROM WIKISPACES</h2>
{{Infobox ET}}
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br>
{{ED intro}}
: This revision was by author [[User:JosephRuhf|JosephRuhf]] and made on <tt>2015-03-05 20:34:53 UTC</tt>.<br>
: The original revision id was <tt>543142144</tt>.<br>
: 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>
<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">This scale coincidentally turns out to be 16 equal divisions of a stretched octave (1217.25 cents) and a tritave twin of the Armodue/Hornbostel flat third-tone system (6th=1065.095 cents, squared=2130.19 cents=228.235 cents, cubed=1293.33 cents, fourth power=2358.425 cents=456.47 cents).
||~ Degree ||~ cents ||~ Armodue name ||
|| 1\25 || 76.08 || 1#/2bb ||
|| 2\25 || 152.16 || 1x/2b ||
|| 3\25 || 228.235 || 2 ||
|| 4\25 || 304.31 || 2#/3bb ||
|| 5\25 || 380.39 || 2x/3b ||
|| 6\25 || 456.47 || 3 ||
|| 7\25 || 532.55 || 3#/4b ||
|| 8\25 || 608.625 || 4 ||
|| 9\25 || 684.70 || 4#/5bb ||
|| 10\25 || 760.78 || 4x/5b ||
|| 11\25 || 836.86 || 5 ||
|| 12\25 || 912.94 || 5#/6bb ||
|| 13\25 || 989.02 || 5x/6b ||
|| 14\25 || 1065.095 || 6 ||
|| 15\25 || 1141.17 || 6#/7bb ||
|| 16\25 || 1217.25 || 6x/7b ||
|| 17\25 || 1293.33 || 7 ||
|| 18\25 || 1369.41 || 7#/8b ||
|| 19\25 || 1445.485 || 8 ||
|| 20\25 || 1521.56 || 8#/9bb ||
|| 21\25 || 1597.64 || 8x/9b ||
|| 22\25 || 1673.72 || 9 ||
|| 23\25 || 1749.80 || 9#/1bb ||
|| 24\25 || 1825.88 || 9x/1b ||
|| 25\25 || 1901.955 || 1 ||</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;25edt&lt;/title&gt;&lt;/head&gt;&lt;body&gt;This scale coincidentally turns out to be 16 equal divisions of a stretched octave (1217.25 cents) and a tritave twin of the Armodue/Hornbostel flat third-tone system (6th=1065.095 cents, squared=2130.19 cents=228.235 cents, cubed=1293.33 cents, fourth power=2358.425 cents=456.47 cents).&lt;br /&gt;


== Theory ==
25edt corresponds to 15.7732…[[edo]], or 16 equal divisions of a stretched octave (1217.25{{c}}) and a tritave twin of the Armodue/Hornbostel flat third-tone system:
* 6th = 1065.095{{c}}
* squared = 2130.19{{c}} → 228.235{{c}}
* cubed = 1293.33{{c}}
* fourth power = 2358.425{{c}} → 456.47{{c}}


&lt;table class="wiki_table"&gt;
It can be used as a tuning for [[mavila]] and has an antidiatonic ([[2L&nbsp;5s]]) scale which approximates [[Pelog]] tunings in Indonesian gamelan music.
    &lt;tr&gt;
        &lt;th&gt;Degree&lt;br /&gt;
&lt;/th&gt;
        &lt;th&gt;cents&lt;br /&gt;
&lt;/th&gt;
        &lt;th&gt;Armodue name&lt;br /&gt;
&lt;/th&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;1\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;76.08&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1#/2bb&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;2\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;152.16&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1x/2b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;3\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;228.235&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;2&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;4\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;304.31&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;2#/3bb&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;5\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;380.39&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;2x/3b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;6\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;456.47&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;3&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;7\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;532.55&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;3#/4b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;8\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;608.625&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;4&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;9\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;684.70&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;4#/5bb&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;10\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;760.78&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;4x/5b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;11\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;836.86&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;5&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;12\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;912.94&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;5#/6bb&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;13\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;989.02&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;5x/6b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;14\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1065.095&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;6&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;15\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1141.17&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;6#/7bb&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;16\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1217.25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;6x/7b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;17\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1293.33&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;7&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;18\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1369.41&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;7#/8b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;19\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1445.485&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;8&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;20\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1521.56&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;8#/9bb&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;21\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1597.64&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;8x/9b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;22\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1673.72&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;9&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;23\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1749.80&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;9#/1bb&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;24\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1825.88&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;9x/1b&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
    &lt;tr&gt;
        &lt;td&gt;25\25&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1901.955&lt;br /&gt;
&lt;/td&gt;
        &lt;td&gt;1&lt;br /&gt;
&lt;/td&gt;
    &lt;/tr&gt;
&lt;/table&gt;


&lt;/body&gt;&lt;/html&gt;</pre></div>
=== Harmonics ===
{{Harmonics in equal|25|3|1|intervals=integer|columns=11}}
{{Harmonics in equal|25|3|1|intervals=integer|columns=11|start=12|collapsed=true|title=Approximation of harmonics in 25edt (continued)}}
 
=== Subsets and supersets ===
Since 25 factors into primes as 5<sup>2</sup>, 25edt contains [[5edt]] as its only nontrivial subset edt.
 
== Intervals ==
{| class="wikitable center-1 right-2 right-3"
|-
! #
! [[Cent]]s
! [[Hekt]]s
! Armodue name
|-
| 0
| 0.0
| 0.0
| 1
|-
| 1
| 76.1
| 52.0
| 1#/2bb
|-
| 2
| 152.2
| 104.0
| 1x/2b
|-
| 3
| 228.2
| 156.0
| 2
|-
| 4
| 304.3
| 208.0
| 2#/3bb
|-
| 5
| 380.4
| 260.0
| 2x/3b
|-
| 6
| 456.5
| 312.0
| 3
|-
| 7
| 532.5
| 364.0
| 3#/4b
|-
| 8
| 608.6
| 416.0
| 4
|-
| 9
| 684.7
| 468.0
| 4#/5bb
|-
| 10
| 760.8
| 520.0
| 4x/5b
|-
| 11
| 836.9
| 572.0
| 5
|-
| 12
| 912.9
| 624.0
| 5#/6bb
|-
| 13
| 989.0
| 676.0
| 5x/6b
|-
| 14
| 1065.1
| 728.0
| 6
|-
| 15
| 1141.2
| 780.0
| 6#/7bb
|-
| 16
| 1217.3
| 832.0
| 6x/7b
|-
| 17
| 1293.3
| 884.0
| 7
|-
| 18
| 1369.4
| 936.0
| 7#/8b
|-
| 19
| 1445.5
| 988.0
| 8
|-
| 20
| 1521.6
| 1040.0
| 8#/9bb
|-
| 21
| 1597.6
| 1092.0
| 8x/9b
|-
| 22
| 1673.7
| 1144.0
| 9
|-
| 23
| 1749.8
| 1196.0
| 9#/1bb
|-
| 24
| 1825.9
| 1248.0
| 9x/1b
|-
| 25
| 1902.0
| 1300.0
| 1
|}
 
== See also ==
* [[16edo]] – relative edo
* [[41ed6]] – relative ed6
* [[57ed12]] – relative ed12
 
{{Todo|expand}}
[[Category:Armodue]]