79edo: Difference between revisions

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**Imported revision 559512369 - Original comment: **
Music: Add Bryan Deister's ''microtonal improvisation in 79edo'' (2025)
 
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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:Dodecaphobe|Dodecaphobe]] and made on <tt>2015-09-16 23:02:23 UTC</tt>.<br>
: The original revision id was <tt>559512369</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">=&lt;span style="color: #790079; font-family: 'Times New Roman',Times,serif; font-size: 113%;"&gt;79 tone equal temperament&lt;/span&gt;=


**79edo** divides the octave into 79 equal parts of 15.190 cents each. It tempers out 3125/3072 in the 5-limit, 4000/3969, 1728/1715 and 4375/4374 in the 7-limit, 99/98, 1331/1323, 243/242, 385/384 and 4000/3993 in the 11-limit, and 275/273, 169/168, 640/637, 1188/1183, 325/324, 351/350, 1575/1573, 2080/2079 and 2200/2197 in the 13-limit. It provides the optimal patent val for [[Orwellismic temperaments#Sentinel-11-limit|sentinel temperament]]. 79 is the 22nd prime EDO number.
== Theory ==
79edo works well as a no-7 13- or 17-[[limit]] tuning. It is in fact [[consistent]] in the no-7 [[13-odd-limit]].  


=Music=
Using the [[patent val]], it [[tempering out|tempers out]] [[3125/3072]] in the 5-limit, [[1728/1715]], [[4000/3969]] and [[4375/4374]] in the 7-limit, [[99/98]], [[243/242]], [[385/384]], 1331/1323, and [[4000/3993]] in the 11-limit, and [[169/168]], [[275/273]], [[325/324]], [[351/350]], [[640/637]], [[1188/1183]], [[1575/1573]], [[2080/2079]], and [[2200/2197]] in the 13-limit. It provides the [[optimal patent val]] for the [[sentinel]] temperament.
[[https://soundcloud.com/fever-carpets/saint-sebastian-by-the-hands-of-reni|Saint Sebastian, By the Hands of Reni]] by Silence and Secrecy (Julian Malerman)</pre></div>
 
<h4>Original HTML content:</h4>
The 79c val [[support]]s [[meantone]] with a tuning very close to [[1/7-comma meantone|1/7-comma]].
<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;79edo&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;!-- ws:start:WikiTextHeadingRule:0:&amp;lt;h1&amp;gt; --&gt;&lt;h1 id="toc0"&gt;&lt;a name="x79 tone equal temperament"&gt;&lt;/a&gt;&lt;!-- ws:end:WikiTextHeadingRule:0 --&gt;&lt;span style="color: #790079; font-family: 'Times New Roman',Times,serif; font-size: 113%;"&gt;79 tone equal temperament&lt;/span&gt;&lt;/h1&gt;
 
&lt;br /&gt;
=== Odd harmonics ===
&lt;strong&gt;79edo&lt;/strong&gt; divides the octave into 79 equal parts of 15.190 cents each. It tempers out 3125/3072 in the 5-limit, 4000/3969, 1728/1715 and 4375/4374 in the 7-limit, 99/98, 1331/1323, 243/242, 385/384 and 4000/3993 in the 11-limit, and 275/273, 169/168, 640/637, 1188/1183, 325/324, 351/350, 1575/1573, 2080/2079 and 2200/2197 in the 13-limit. It provides the optimal patent val for &lt;a class="wiki_link" href="/Orwellismic%20temperaments#Sentinel-11-limit"&gt;sentinel temperament&lt;/a&gt;. 79 is the 22nd prime EDO number.&lt;br /&gt;
{{Harmonics in equal|79}}
&lt;br /&gt;
 
&lt;!-- ws:start:WikiTextHeadingRule:2:&amp;lt;h1&amp;gt; --&gt;&lt;h1 id="toc1"&gt;&lt;a name="Music"&gt;&lt;/a&gt;&lt;!-- ws:end:WikiTextHeadingRule:2 --&gt;Music&lt;/h1&gt;
=== Subsets and supersets ===
&lt;a class="wiki_link_ext" href="https://soundcloud.com/fever-carpets/saint-sebastian-by-the-hands-of-reni" rel="nofollow"&gt;Saint Sebastian, By the Hands of Reni&lt;/a&gt; by Silence and Secrecy (Julian Malerman)&lt;/body&gt;&lt;/html&gt;</pre></div>
79edo is the 22nd prime edo, past [[73edo]] and before [[83edo]].
 
=== Miscellany ===
79edo adequately represents the [[Decaononic]] way of playing, as 79edo misses 9/8 while having a near-perfect representation of 10/9 as 12\79. A [[maximal evenness]] variant of such a scale can be generated by naively stacking six [[12edo]] diatonic majors and one Lydian [[tetrachord]]{{clarify}}. Since the final tetrachord does not have a 2nd degree, this results in 6 II's stretched over 6 + 7/12 octaves, which is just enough to make the log2 of the number to be equal to 10/9{{clarify}}. From a regular temperament theory perspective, these scales are a part of the [[bluebirds]] temperament.
 
== Intervals ==
{{Interval table}}
 
== Regular temperament properties ==
79edo supports the [[bluebirds]] temperament. It also supports [[Subgroup temperaments #Oceanfront|oceanfront]], [[meantone]], and [[sentinel]].
{{todo|expand}}
 
== Scales ==
=== Mos scales ===
* Bluebirds[6, 7, 13, 20, 33…]
* Meantone[7, 12, 19, 31…]
* Oceanfront[7, 12, 17, 22, 27…]
** Subsets of the above: see [[oceanfront scales]]
* Sentinel[5, 8, 11, 14, 17, 31…]
 
=== Others ===
* [[Meantone]] Minor Hexatonic: 13 7 13 13 20 13 ((13, 20, 33, 46, 66, 79)\79)
 
== Instruments ==
=== Lumatone ===
* [[Lumatone mapping for 79edo]]
 
=== Skip fretting ===
'''Skip fretting system 79 7 19''' is a [[skip fretting]] system for [[79edo]]. All examples are for 5-string bass.
 
; Harmonics
1/1: string 2 open
 
2/1: string 1 fret 14
 
3/2: string 5 fret 21
 
5/4: string 5 fret 18
 
7/4: string 5 fret 2
 
11/8: string 4 fret 11
 
13/8: string 5 fret 11
 
17/16: string 2 fret 1
 
19/16: string 5 fret 6
 
== Music ==
; [[Bryan Deister]]
* [https://www.youtube.com/watch?v=qj6tmkMvQMU ''microtonal improvisation in 79edo''] (2025)
 
; [[User:Francium|Francium]]
* [https://www.youtube.com/watch?v=gAELEuSZra8 ''Gold''] (2022)
 
; Silence and Secrecy ([[Julian Malerman]])
* [https://soundcloud.com/fever-carpets/saint-sebastian-by-the-hands-of-reni ''Saint Sebastian, By the Hands of Reni''] (2014)
 
[[Category:Listen]]