Scale: Difference between revisions

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Scales are typically organized in ascending or descending order. In most scales, the descending form is identical to the ascending form but in the opposite order. However, some scales have different forms in both directions, such as the [[Wikipedia:Melodic minor scale|melodic minor scale]]. A '''reentrant scale''' features at least one '''negative step''', going backwards relative to the general direction of the scale. Although a reentrant scale is not strictly ascending or descending, its ascending and descending forms are determined by its general direction.

Most scales are [[Periodic scale|periodic]], featuring a '''step pattern''' that repeats after a given interval, the ''[[period]]'', often the [[octave]] or a fraction thereof. A scale's step pattern can be condensed in the form of a [[scale signature]]. Aperiodic scales also exist, notably the [[harmonic series]].

Most scales are [[Periodic scale|periodic]], featuring a '''step pattern''' that repeats after a given interval, the ''[[period]]'', often the [[octave]] or a fraction thereof. A scale's step pattern can be condensed in the form of a [[scale signature]]. Periodic scales may be rotated into different [[mode]]s by designating a different tone as the tonic. Aperiodic scales also exist, notably the [[harmonic series]].

== Concrete and abstract scales ==

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 Scales are typically organized in ascending or descending order. In most scales, the descending form is identical to the ascending form but in the opposite order. However, some scales have different forms in both directions, such as the [[Wikipedia:Melodic minor scale|melodic minor scale]]. A '''reentrant scale''' features at least one '''negative step''', going backwards relative to the general direction of the scale. Although a reentrant scale is not strictly ascending or descending, its ascending and descending forms are determined by its general direction.
-Most scales are [[Periodic scale|periodic]], featuring a '''step pattern''' that repeats after a given interval, the ''[[period]]'', often the [[octave]] or a fraction thereof. A scale's step pattern can be condensed in the form of a [[scale signature]]. Aperiodic scales also exist, notably the [[harmonic series]].
+Most scales are [[Periodic scale|periodic]], featuring a '''step pattern''' that repeats after a given interval, the ''[[period]]'', often the [[octave]] or a fraction thereof. A scale's step pattern can be condensed in the form of a [[scale signature]]. Periodic scales may be rotated into different [[mode]]s by designating a different tone as the tonic. Aperiodic scales also exist, notably the [[harmonic series]].
 == Concrete and abstract scales ==