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| <h2>IMPORTED REVISION FROM WIKISPACES</h2> | | {{About|chromas in general|the chroma in the diatonic scale|Chromatic semitone}} |
| This is an imported revision from Wikispaces. The revision metadata is included below for reference:<br>
| | __NOTOC__ <!-- No TOC because it's a rather short article. Remove this if it has expanded significantly. --> |
| : This revision was by author [[User:xenwolf|xenwolf]] and made on <tt>2016-02-16 16:54:28 UTC</tt>.<br>
| | The '''chroma''' (precisely the '''moschroma''') of a [[mos scale]] is the interval that is the difference between the large step and the small step in the scale. In particular, the chroma in the [[diatonic]] scale is the [[chromatic semitone]], or augmented unison, such as the interval of C–C♯. |
| : The original revision id was <tt>575000935</tt>.<br>
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| The revision contents are below, presented both in the original Wikispaces Wikitext format, and in HTML exactly as Wikispaces rendered it.<br>
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| <h4>Original Wikitext content:</h4>
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| <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 PAGE IS A WORK IN PROGRESS--
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| Given an MOS scale, the Chroma for that scale is the interval that is the difference between the large step and the small step in the scale.
| | In staff notation, alteration by the chroma can be represented by the sharp (♯) or flat (♭), as is shown above. In [[diamond-mos notation]], it should be noted that they are reserved exclusively for the diatonic scale, whereas am (&) and at (@) are used for other mos scales. |
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| For example, in the diatonic scale the large step is the major second (C-D) and the small step is the minor second (C-Db). The difference between those two intervals is the augmented unison (C-C#).
| | Moving one note in a mos scale by a chroma leads to a [[modmos scale]] if the result is not just a transposition of the original mos scale. |
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| The term was suggested as a way to generalize the concept of a sharp or flat (# or b). | | The [[Fokker block]], being a generalization of the mos scale to higher ranks, also has the concept of chroma. See [[Fokker block]]. |
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| Moving one note in an MOS scale by a chroma leads to a MODMOS (if the result is not just a transposition of the original MOS scale.)
| | == History == |
| | The first mention of the term "chroma" occurs in Marchettus of Padua<ref>Marchettus of Padua (1318) ''Lucidarium''.</ref> where he describes it as an interval smaller than the diatonic semitone. The exact nature of the interval he was describing is debated.<ref>Joe Monzo (2008) ''Speculations on Marchetto of Padua's "Fifth-Tones"''. http://www.tonalsoft.com/monzo/marchetto/marchetto.aspx</ref> |
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| | == In psychoacoustics == |
| See also [[25_24|25/24]] the 5-limit chromatic semitone.</pre></div>
| | {{wikipedia|Chroma feature}} |
| <h4>Original HTML content:</h4>
| | In psychoacoustics, the term ''chroma'' refers to the circular perception of pitch with respect to [[octave equivalence]]. |
| <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"><html><head><title>Chroma</title></head><body>--THIS PAGE IS A WORK IN PROGRESS--<br />
| | This is essentially the same as the concept of [[pitch class]]. |
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| Given an MOS scale, the Chroma for that scale is the interval that is the difference between the large step and the small step in the scale.<br />
| | == See also == |
| <br />
| | * [[Pythagorean chroma]] |
| For example, in the diatonic scale the large step is the major second (C-D) and the small step is the minor second (C-Db). The difference between those two intervals is the augmented unison (C-C#).<br />
| | * [[Chromatic semitone]] |
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| | * [[25/24]], the 5-limit chromatic semitone |
| The term was suggested as a way to generalize the concept of a sharp or flat (# or b).<br />
| | * [[Sharpness]], a property related to sharps and flats in [[edo]]s |
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| | * [[Diesis (scale theory)]] |
| Moving one note in an MOS scale by a chroma leads to a MODMOS (if the result is not just a transposition of the original MOS scale.)<br />
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| | == References == |
| <hr />
| | <references/> |
| See also <a class="wiki_link" href="/25_24">25/24</a> the 5-limit chromatic semitone.</body></html></pre></div> | | |
| | [[Category:Chroma| ]] <!-- main article --> |
| | [[Category:MOS scale]] |
| | [[Category:MODMOS]] |
| | [[Category:Terms]] |