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It is defined as the interval between two adjacent notes in a 12-tone scale (or half of a whole step), visually seen on a keyboard as the distance between two keys that are adjacent to each other. For example, C is adjacent to C ♯ ; the interval between them is a semitone.
The term scale step is sometimes used synonymously with scale degree, but it may alternatively refer to the distance between two successive and adjacent scale degrees (see steps and skips). The terms " whole step " and " half step " are commonly used as interval names (though "whole scale step" or "half scale step" are not used).
where "whole" stands for a whole tone (a red u-shaped curve in the figure), and "half" stands for a semitone (a red angled line in the figure). [2] Whole steps and half steps are explained mathematically in a related article, Twelfth root of two. Notably, an equal-tempered octave has twelve half steps (semitones) spaced equally in terms of the ...
For instance, in a chromatic scale each scale step represents a semitone interval, while a major scale is defined by the interval pattern W–W–H–W–W–W–H, where W stands for whole step (an interval spanning two semitones, e.g. from C to D), and H stands for half-step (e.g. from C to D â™).
For example, C to D (major second) is a step, whereas C to E (major third) is a skip. More generally, a step is a smaller or narrower interval in a musical line, and a skip is a wider or larger interval with the categorization of intervals into steps and skips is determined by the tuning system and the pitch space used.
Accidental symbols visually communicate a modification of a note's pitch from its tonal context. Most commonly, [note 2] the sharp symbol (♯) raises a note by a half step, while the flat symbol (â™) lowers a note by a half step. This half step interval is also known as a semitone (which has an equal temperament frequency ratio of 12 √ 2 ≅
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