Diesis: Difference between revisions

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Enharmonic doesn't imply equivalent, especially here!
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{{Wikipedia|Diesis}}
{{Wikipedia}}
 
The '''diesis''' (/ˈdaɪəsɪs/ ''DY-ə-sis''; plural ''dieses'') most commonly refers to:  
The '''diesis''' (/ˈdaɪəsɪs/ ''DY-ə-sis''; plural ''dieses'') most commonly refers to:  
* [[128/125]], the ''augmented comma'' or ''lesser diesis'';
** rarely, [[648/625]], the ''diminished comma'' or ''greater diesis'';
* By extension, a melodic unit of about the size of 128/125 (≈ 41¢). See [[Diesis (interval region)]];
* By extension, the difference between two enharmonic notes in a scale. See [[Diesis (scale theory)]].


* The interval [[128/125]] (≈ 41¢).
In addition, there are a number of archaic usages in [[Ancient Greek music]]:  
* Any interval about that size. In particular, [[Zhea Erose]] defines it as, fairly broadly, any interval in the range 31 to 41 cents, or more narrowly 35 to 38 cents. When played in the E3-E5 range, those intervals allegedly tend to beat at the speed of typical human singing vibrato. Zhea considers [[31edo]] and [[34edo]] to be special for having an interval in this range.
* [[256/243]], known as the limma today;
* The difference between two enharmonic notes in a scale, i.e. the diminished second (a minor second diminished by a [[chroma]]).
* A variety of quartertones.
 
Intervals with the word in the name:  
 
* Greater diesis, [[648/625]]
* Small diesis, aka [[magic comma]]
* Minimal diesis, aka [[tetracot comma]]
* Septimal diesis, [[49/48]]


== Normal diesis ==
== Normal diesis ==
The '''normal diesis''' (≈ 38.7¢) is an [[interval size measure]] defined as one step of [[31edo]].
The '''normal diesis''' (≈ 38.7¢) is an [[interval size measure]] defined as one step of [[31edo]].


[[Category:Commas]]
== See also ==
[[Category:Interval size measure]]
* [http://tonalsoft.com/enc/d/diesis.aspx Tonalsoft Encyclopedia | ''Diesis'']


{{Disambiguation}}
{{Disambiguation}}
[[Category:Terms]]