Nicolic chords: Difference between revisions

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**Imported revision 266566564 - Original comment: **
This is of pattern 1b
 
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<h2>IMPORTED REVISION FROM WIKISPACES</h2>
'''Nicolic chords''' are [[dyadic chord|essentially tempered chords]] tempered by the nicola, [[1575/1573]].
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br>
 
: This revision was by author [[User:xenwolf|xenwolf]] and made on <tt>2011-10-19 17:27:20 UTC</tt>.<br>
Nicolic chords are of [[dyadic chord/Pattern of essentially tempered chords|pattern 1b]] in the [[15-odd-limit]]. There are 3 triads, 6 tetrads and 2 pentads for a total of 11 distinct chord structures.  
: The original revision id was <tt>266566564</tt>.<br>
 
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The nicolic triads include the following palindromic form since it identifies [[13/7]] by a stack of two [[15/11]]'s:
The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br>
* 1–15/11–13/7 with steps of 15/11, 15/11, [[14/13]].
<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">The **nicolic tetrad** in close position is a [[Unisone|1]]-[[15_13|15/13]]-[[15_11|15/11]]-[[11_7|11/7]] in a temperament where the [[nicola]], 1575/1573, is [[tempering out|tempered out]]. It therefore has steps of 15/13-[[13_11|13/11]]-15/13-[[14_11|14/11]], and is a [[15-limit]] chord. [[Equal]] divisions with nicolic tetrads include [[58edo]], [[72edo]], [[87edo]], [[103edo]], [[121edo]], [[130edo]], [[190edo]], [[217edo]], [[224edo]], [[311edo]], [[414edo]], [[441edo]], [[665edo]] and [[855edo]].</pre></div>
And a pair in inverse relationship:
<h4>Original HTML content:</h4>
* 1–15/11–[[11/7]] with steps of 15/11, [[15/13]], [[14/11]], and its inverse
<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;nicolic tetrad&lt;/title&gt;&lt;/head&gt;&lt;body&gt;The &lt;strong&gt;nicolic tetrad&lt;/strong&gt; in close position is a &lt;a class="wiki_link" href="/Unisone"&gt;1&lt;/a&gt;-&lt;a class="wiki_link" href="/15_13"&gt;15/13&lt;/a&gt;-&lt;a class="wiki_link" href="/15_11"&gt;15/11&lt;/a&gt;-&lt;a class="wiki_link" href="/11_7"&gt;11/7&lt;/a&gt; in a temperament where the &lt;a class="wiki_link" href="/nicola"&gt;nicola&lt;/a&gt;, 1575/1573, is &lt;a class="wiki_link" href="/tempering%20out"&gt;tempered out&lt;/a&gt;. It therefore has steps of 15/13-&lt;a class="wiki_link" href="/13_11"&gt;13/11&lt;/a&gt;-15/13-&lt;a class="wiki_link" href="/14_11"&gt;14/11&lt;/a&gt;, and is a &lt;a class="wiki_link" href="/15-limit"&gt;15-limit&lt;/a&gt; chord. &lt;a class="wiki_link" href="/Equal"&gt;Equal&lt;/a&gt; divisions with nicolic tetrads include &lt;a class="wiki_link" href="/58edo"&gt;58edo&lt;/a&gt;, &lt;a class="wiki_link" href="/72edo"&gt;72edo&lt;/a&gt;, &lt;a class="wiki_link" href="/87edo"&gt;87edo&lt;/a&gt;, &lt;a class="wiki_link" href="/103edo"&gt;103edo&lt;/a&gt;, &lt;a class="wiki_link" href="/121edo"&gt;121edo&lt;/a&gt;, &lt;a class="wiki_link" href="/130edo"&gt;130edo&lt;/a&gt;, &lt;a class="wiki_link" href="/190edo"&gt;190edo&lt;/a&gt;, &lt;a class="wiki_link" href="/217edo"&gt;217edo&lt;/a&gt;, &lt;a class="wiki_link" href="/224edo"&gt;224edo&lt;/a&gt;, &lt;a class="wiki_link" href="/311edo"&gt;311edo&lt;/a&gt;, &lt;a class="wiki_link" href="/414edo"&gt;414edo&lt;/a&gt;, &lt;a class="wiki_link" href="/441edo"&gt;441edo&lt;/a&gt;, &lt;a class="wiki_link" href="/665edo"&gt;665edo&lt;/a&gt; and &lt;a class="wiki_link" href="/855edo"&gt;855edo&lt;/a&gt;.&lt;/body&gt;&lt;/html&gt;</pre></div>
* 1–15/11–[[26/15]] with steps of 15/11, 14/11, 15/13.
 
For tetrads, there are two palindromic chords and two pairs of chords in inverse relationship. The palindromic chords are
* 1–15/13–15/11–11/7 with steps of 15/13, [[13/11]], 15/13, 14/11;
* 1–15/13–[[22/15]]–11/7 with steps of 15/13, 14/11, [[15/14]], 14/11.
 
The inversely related pairs of chords are
* 1–15/11–11/7–13/7 with steps of 15/11, 15/13, 13/11, 14/13, and its inverse
* 1–15/11–22/15–26/15 with steps of 15/11, 14/13, 13/11, 15/13;
* 1–15/11–26/15–13/7 with steps of 15/11, 14/11, 15/14, 14/13, and its inverse
* 1–15/11–22/15–11/7 with steps of 15/11, 14/13, 15/14, 14/11.
 
They can be extended to pentads:
* 1–15/14–15/13–15/11–11/7 with steps of 15/14, 14/13, 13/11, 15/13, 14/11, and its inverse
* 1–15/13–15/11–22/15–11/7 with steps of 15/13, 13/11, 14/13, 15/14, 14/11.
 
[[Equal temperament]]s with nicolic chords include {{Optimal ET sequence| 29, 31, 43, 58, 72, 87, 94, 103, 121, 130, 159, 190, 217, 224, 311, 414, 441, 665 and 855 }}.
 
Here is a listening sample, tempered to TE tuning of nicolic.
 
{| class="wikitable center-all"
! Ratio
! [[1/1]] || [[15/13]] || [[15/11]] || [[11/7]]
|-
! [[Cent]]s
| 0.000 || 247.099 || 536.086 || 783.185
|-
! Sound <br> <small>[[:File:Nicolic tetrad.mp3|[info]]]</small>
| colspan="4" | [[File:Nicolic tetrad.mp3]]
|}
 
[[Category:15-odd-limit chords]]
[[Category:Essentially tempered chords]]
[[Category:Triads]]
[[Category:Tetrads]]
[[Category:Pentads]]
[[Category:Nicolic]]
[[Category:Listen]]