Chroma: Difference between revisions

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--THIS PAGE IS A WORK IN PROGRESS--
The '''chroma''' of an [[MOS scale]] is the interval that is the difference between the large step and the small step in the scale. 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#). The term was suggested as a way to generalize the concept of a sharp or flat (# or b).


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. 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#). The term was suggested as a way to generalize the concept of a sharp or flat (# or b). 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.)
Moving one note in an MOS scale by a chroma leads to a [[MODMOS scale]] (if the result is not just a transposition of the original MOS scale.)


== See also ==
== See also ==
* [[25/24]], the classic chromatic semitone
* [[25/24]], the classic chromatic semitone
* [[2187/2048]], the Pythagorean chromatic semitone
* [[2187/2048]], the Pythagorean chromatic semitone
* [[Sharpness]], a property related to sharps and flats in [[edo]]s


[[Category:Chroma| ]] <!-- main article -->
[[Category:Chroma| ]] <!-- main article -->
[[Category:Scale theory]]
[[Category:MOS]]
[[Category:Sharpness]]
[[Category:MODMOS]]
{{todo|expand}}