MOS scale: Difference between revisions

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{{interwiki|en=MOS scale|de=MOS-Skala|es=|ja=MOSスケール|ro=G2S}}{{Beginner|Mathematics of MOS}}An '''MOS''' (sometimes '''mos'''; originally pronounced "em-oh-ess," but sometimes also pronounced "moss"; plural '''MOSes''' or '''mosses''') or '''moment of symmetry''' is a [[periodic scale]] where every number of steps (except those spanning multiples of the period) spans intervals of two specific sizes. MOSses therefore have two step sizes; we can denote step patterns of mosses by writing L for each large step and s for each small step.

'''Moment of Symmetry (MOS):''' a periodic sequence made up of two kinds of repeated elements, in which each kind is distributed as evenly as possible; in other words, occurrences of the same element are spaced as regularly as the periodicity allows.

An '''MOS''' (sometimes '''mos'''; originally pronounced "em-oh-ess," but sometimes also pronounced "moss"; plural '''MOSes''' or '''mosses''') or '''moment of symmetry''' is a [[periodic scale]] where every number of steps (except those spanning multiples of the period) spans intervals of two specific sizes. MOSses therefore have two step sizes; we can denote step patterns of mosses by writing L for each large step and s for each small step.

The [[5L 2s|diatonic scale]] is a classic example of an MOS scale. It has 7 steps: 5 large ones (whole tones) and 2 small ones (diatonic semitones). Writing out the pattern of the major mode, we get LLsLLLs. The other modes are rotations of this pattern (e.g. LsLLsLL is the minor mode.) The melodic minor scale, which is not a mode of the diatonic scale, (LsLLLLs) is not a MOS since it has three kinds of fifths: perfect, diminished, and augmented; and so four steps spans intervals of three specific sizes.

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-{{interwiki|en=MOS scale|de=MOS-Skala|es=|ja=MOSスケール|ro=G2S}}{{Beginner|Mathematics of MOS}}
+{{interwiki|en=MOS scale|de=MOS-Skala|es=|ja=MOSスケール|ro=G2S}}{{Beginner|Mathematics of MOS}}An '''MOS''' (sometimes '''mos'''; originally pronounced "em-oh-ess," but sometimes also pronounced "moss"; plural '''MOSes''' or '''mosses''') or '''moment of symmetry''' is a [[periodic scale]] where every number of steps (except those spanning multiples of the period) spans intervals of two specific sizes. MOSses therefore have two step sizes; we can denote step patterns of mosses by writing L for each large step and s for each small step.
-'''Moment of Symmetry (MOS):''' a periodic sequence made up of two kinds of repeated elements, in which each kind is distributed as evenly as possible; in other words, occurrences of the same element are spaced as regularly as the periodicity allows.
-An '''MOS''' (sometimes '''mos'''; originally pronounced "em-oh-ess," but sometimes also pronounced "moss"; plural '''MOSes''' or '''mosses''') or '''moment of symmetry''' is a [[periodic scale]] where every number of steps (except those spanning multiples of the period) spans intervals of two specific sizes. MOSses therefore have two step sizes; we can denote step patterns of mosses by writing L for each large step and s for each small step.
 The [[5L 2s|diatonic scale]] is a classic example of an MOS scale. It has 7 steps: 5 large ones (whole tones) and 2 small ones (diatonic semitones). Writing out the pattern of the major mode, we get LLsLLLs. The other modes are rotations of this pattern (e.g. LsLLsLL is the minor mode.) The melodic minor scale, which is not a mode of the diatonic scale, (LsLLLLs) is not a MOS since it has three kinds of fifths: perfect, diminished, and augmented; and so four steps spans intervals of three specific sizes.