Chroma: Difference between revisions

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For the Fokker block concept of chroma, see [[Fokker block]].
For the Fokker block concept of chroma, see [[Fokker block]].


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).
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. The term was suggested as a way to generalize the concept of a sharp or flat (# or b). In particular, the chroma or '''chromatic semitone''' in the [[diatonic]] scale is the augmented unison, for example, the interval of C-C#.  


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.)
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.


== See also ==
== See also ==
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[[Category:MOS]]
[[Category:MOS]]
[[Category:MODMOS]]
[[Category:MODMOS]]
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{{Todo| expand }}

Revision as of 14:22, 14 August 2022

For the Fokker block concept of chroma, see Fokker block.

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. The term was suggested as a way to generalize the concept of a sharp or flat (# or b). In particular, the chroma or chromatic semitone in the diatonic scale is the augmented unison, for example, the interval of 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.

See also

  • 25/24, the classic chromatic semitone
  • 2187/2048, the Pythagorean chromatic semitone
  • Sharpness, a property related to sharps and flats in edos