Adaptive just intonation: Difference between revisions

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<h2>IMPORTED REVISION FROM WIKISPACES</h2>
'''Adaptive just intonation''' ('''adaptive JI''') is an approach to [[just intonation]] that employs predefined musical intervals as frequency ratios over a floating tonal center that is defined by the most recent context.
This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br>
: This revision was by author [[User:whatmusicreallyis|whatmusicreallyis]] and made on <tt>2017-09-04 07:17:09 UTC</tt>.<br>
: The original revision id was <tt>617144761</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">[[http://www.tonalsoft.com/enc/a/adaptive-ji.aspx|Definition of Adaptive JI (Tonalsoft encyclopedia)]]


==Software==  
== Description ==
[[http://www.math.tu-dresden.de/%7Emutabor/|Mutabor]] Windows, Linux and Mac OS X. Uses its own programming language to describe pitches, (re)tunings and reactions to events.
In an adaptive JI context, any given moment during a piece of music has a reference pitch to which the rest of the music is compared.
[[@http://www.TallKite.com/alt-tuner.html|alt-tuner]] PCs, macs and Linux/Wine. DAW plug-in (requires [[@http://reaper.fm/|REAPER]]) that retunes almost every midi keyboard or softsynth.
[[@http://www.nonoctave.com/tuning/LilMissScaleOven/features.html|L'il Miss' Scale Oven]] OS X application. Has a proprietary dynamic retuning system called //Nuscale.//
[[@http://tonesintune.com/|TonesInTune]] Add-in to Microsoft Excel (x32 &amp; composition only). Re-introduces dynamic intonation, a key feature of most acoustic music instruments.
[[http://www.hermode.com/index_en.html|Hermode tuning]] Algorithm/feature embedded in 3rd party applications. Tunes only the fifths and thirds of electronic instruments dynamically in real time.


==Compositions==
For example, take a song in the key of A major with a basic cadence of I - IV - V7 - I.  Traditionally, the chords would be A - D - E7 - A, spelled A C# E, D F# A, E G# B D, and then again A C# E.  Although the key of the cadence is always A, the reference pitch for each chord in the cadence is different.
[[http://eceserv0.ece.wisc.edu/%7Esethares/mp3s/localanomaly.html|Local Anomaly]] by William Sethares
 
[[http://eceserv0.ece.wisc.edu/%7Esethares/mp3s/three_ears.html|Three Ears]] by William Sethares
If we further define JI intervals in this example as:
[[http://www.seraph.it/XenoTunes2.html|Piano11]] by Carlo Serafini
 
[[http://www.seraph.it/dep/det/CarlosGlass1.mp3|Carlos Glass 1]] by [[Carlo Serafini]] ([[http://www.seraph.it/blog_files/6188507c0c6f464ef6c23330eb9153e9-16.html|blog entry]])</pre></div>
* Major Second: [[9/8|9:8]]
<h4>Original HTML content:</h4>
* Major Third: [[5/4|5:4]]
<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;AdaptiveJI&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;a class="wiki_link_ext" href="http://www.tonalsoft.com/enc/a/adaptive-ji.aspx" rel="nofollow"&gt;Definition of Adaptive JI (Tonalsoft encyclopedia)&lt;/a&gt;&lt;br /&gt;
* Perfect Fourth: [[4/3|4:3]]
&lt;br /&gt;
* Perfect Fifth: [[3/2|3:2]]
&lt;!-- ws:start:WikiTextHeadingRule:0:&amp;lt;h2&amp;gt; --&gt;&lt;h2 id="toc0"&gt;&lt;a name="x-Software"&gt;&lt;/a&gt;&lt;!-- ws:end:WikiTextHeadingRule:0 --&gt;Software&lt;/h2&gt;
* Dominant Seventh: [[9/5|9:5]]
&lt;a class="wiki_link_ext" href="http://www.math.tu-dresden.de/%7Emutabor/" rel="nofollow"&gt;Mutabor&lt;/a&gt; Windows, Linux and Mac OS X. Uses its own programming language to describe pitches, (re)tunings and reactions to events.&lt;br /&gt;
 
&lt;a class="wiki_link_ext" href="http://www.TallKite.com/alt-tuner.html" rel="nofollow" target="_blank"&gt;alt-tuner&lt;/a&gt; PCs, macs and Linux/Wine. DAW plug-in (requires &lt;a class="wiki_link_ext" href="http://reaper.fm/" rel="nofollow" target="_blank"&gt;REAPER&lt;/a&gt;) that retunes almost every midi keyboard or softsynth.&lt;br /&gt;
Then the D in the IV chord is 4:3 with respect to A, which was the tonic of the chord immediately proceeding it.  The E in the E7 chord is the same whether defined relative to the proceeding D chord (9:8 relative to D) or referencing back to the original tonal center of A (because 3:2 is the same as 9:8 of 4:3), but the D in the E7 chord is 9:5 relative to the E (9:5 of 3:2 is 27:20 compared to the original A), which is different than the D in the proceeding D major chord (which was 4:3 compared to the original A).
&lt;a class="wiki_link_ext" href="http://www.nonoctave.com/tuning/LilMissScaleOven/features.html" rel="nofollow" target="_blank"&gt;L'il Miss' Scale Oven&lt;/a&gt; OS X application. Has a proprietary dynamic retuning system called &lt;em&gt;Nuscale.&lt;/em&gt;&lt;br /&gt;
 
&lt;a class="wiki_link_ext" href="http://tonesintune.com/" rel="nofollow" target="_blank"&gt;TonesInTune&lt;/a&gt; Add-in to Microsoft Excel (x32 &amp;amp; composition only). Re-introduces dynamic intonation, a key feature of most acoustic music instruments.&lt;br /&gt;
== Software ==
&lt;a class="wiki_link_ext" href="http://www.hermode.com/index_en.html" rel="nofollow"&gt;Hermode tuning&lt;/a&gt; Algorithm/feature embedded in 3rd party applications. Tunes only the fifths and thirds of electronic instruments dynamically in real time.&lt;br /&gt;
* [http://www.math.tu-dresden.de/%7Emutabor/ Mutabor] Windows, Linux and Mac OS X. Uses its own programming language to describe pitches, (re)tunings and reactions to events.
&lt;br /&gt;
* [http://www.TallKite.com/alt-tuner.html alt-tuner] PCs, macs and Linux/Wine. DAW plug-in (requires [http://reaper.fm/ REAPER]) that retunes almost every midi keyboard or softsynth.
&lt;!-- ws:start:WikiTextHeadingRule:2:&amp;lt;h2&amp;gt; --&gt;&lt;h2 id="toc1"&gt;&lt;a name="x-Compositions"&gt;&lt;/a&gt;&lt;!-- ws:end:WikiTextHeadingRule:2 --&gt;Compositions&lt;/h2&gt;
* [http://www.nonoctave.com/tuning/LilMissScaleOven/features.html L'il Miss' Scale Oven] OS X application. Has a proprietary dynamic retuning system called ''Nuscale.''
&lt;a class="wiki_link_ext" href="http://eceserv0.ece.wisc.edu/%7Esethares/mp3s/localanomaly.html" rel="nofollow"&gt;Local Anomaly&lt;/a&gt; by William Sethares&lt;br /&gt;
* [http://tonesintune.com/ TonesInTune] Add-in to Microsoft Excel (x32 &amp; composition only). Re-introduces dynamic intonation, a key feature of most acoustic music instruments.
&lt;a class="wiki_link_ext" href="http://eceserv0.ece.wisc.edu/%7Esethares/mp3s/three_ears.html" rel="nofollow"&gt;Three Ears&lt;/a&gt; by William Sethares&lt;br /&gt;
* [http://www.hermode.com/index_en.html Hermode tuning] Algorithm/feature embedded in 3rd party applications. Tunes only the fifths and thirds of electronic instruments dynamically in real time.
&lt;a class="wiki_link_ext" href="http://www.seraph.it/XenoTunes2.html" rel="nofollow"&gt;Piano11&lt;/a&gt; by Carlo Serafini&lt;br /&gt;
* [https://www.dmitrivolkov.com/projects/pivotuner/ Pivotuner] VST3/AU plugin for macOS/Windows. Uses fixed just intervals to a dynamically-changing root.
&lt;a class="wiki_link_ext" href="http://www.seraph.it/dep/det/CarlosGlass1.mp3" rel="nofollow"&gt;Carlos Glass 1&lt;/a&gt; by &lt;a class="wiki_link" href="/Carlo%20Serafini"&gt;Carlo Serafini&lt;/a&gt; (&lt;a class="wiki_link_ext" href="http://www.seraph.it/blog_files/6188507c0c6f464ef6c23330eb9153e9-16.html" rel="nofollow"&gt;blog entry&lt;/a&gt;)&lt;/body&gt;&lt;/html&gt;</pre></div>
 
== Music ==
* [http://www.seraph.it/XenoTunes2.html ''Piano11''] by [[Carlo Serafini]]
* [http://www.seraph.it/dep/det/CarlosGlass1.mp3 ''Carlos Glass 1''] by [[Carlo_Serafini|Carlo Serafini]] ([http://www.seraph.it/blog_files/6188507c0c6f464ef6c23330eb9153e9-16.html blog entry])
* [http://eceserv0.ece.wisc.edu/%7Esethares/mp3s/localanomaly.html ''Local Anomaly''] by [[William Sethares]]
* [http://eceserv0.ece.wisc.edu/%7Esethares/mp3s/three_ears.html ''Three Ears''] by William Sethares
* ''Microtonal Composition in "Fluid Just Intonation"'' by [[Rosie Sheldon]] (2021)
** [https://www.youtube.com/watch?v=IKjNIBEGtVc listen on YouTube]
** [https://rosiesheldon.bandcamp.com/track/microtonal-composition-in-fluid-just-intonation listen on Bandcamp]
* [https://youtu.be/idUG-x8kT3o ''Gesualdo's Dolcissima mia vita in three comparative tunings after translation to english''] (0:00 to 5:05) &mdash; rendered by [[Chris Vaisvil]], 2025
* [https://youtu.be/Vl-hpAL9Ouc ''Xenexhibition (for solo keyboard)''] by [[Dmitri Volkov]]
 
== Approaches ==
This is a list of specific subtypes of adaptive just intonation.
 
This list is by nature always incomplete as there are so many possible approaches. Feel free to add to it:
 
* [[Fluid just intonation]]{{idiosyncratic}}
 
{{todo|complete list|text=add at least 2 more examples}}
 
== Related tuning systems ==
Hybrid systems which attempt to combine tempered and just tuning, often tend to employ similar techniques to adaptive JI. Examples of such systems include:
* Barbershop music
** {{w|Barbershop music|Wikipedia: Barbershop music}}
** [[User:Unque/Barbershop Tuning Theory]]
* Neely-intonalism{{idiosyncratic}}
** ''Described in [[Intonalism]]''
 
== External links ==
* [http://www.tonalsoft.com/enc/a/adaptive-ji.aspx Definition of Adaptive JI (Tonalsoft encyclopedia)]
 
[[Category:Just intonation]]