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12 tone equal temperament chromatic scale on C, one full octave ascending, notated only with sharps. Play ascending and descending ⓘ. An equal temperament is a musical temperament or tuning system that approximates just intervals by dividing an octave (or other interval) into steps such that the ratio of the frequencies of any adjacent pair of notes is the same.
In music, 53 equal temperament, called 53 TET, 53 EDO, or 53 ET, is the tempered scale derived by dividing the octave into 53 equal steps (equal frequency ratios) (Play ⓘ). Each step represents a frequency ratio of 2 1 ∕ 53 , or 22.6415 cents ( Play ⓘ ), an interval sometimes called the Holdrian comma .
Examples include the Neapolitan Major scale (fourth mode of the Major Locrian scale), the Javanese slendro, [4] the chromatic scale, whole-tone scale, Dorian scale, the Aeolian Dominant scale (fifth mode of the melodic minor), and the double harmonic scale. Pitch constellations of five symmetric scales.
A heptatonic scale is a musical scale that has seven pitches, or tones, per octave. Examples include: Examples include: the diatonic scale ; including the major scale and its modes (notably the natural minor scale, or Aeolian mode)
12-tone equal temperament chromatic scale on C, one full octave ascending, notated only with sharps. Play ascending and descending ⓘ. 12 equal temperament (12-ET) [a] is the musical system that divides the octave into 12 parts, all of which are equally tempered (equally spaced) on a logarithmic scale, with a ratio equal to the 12th root of 2 (≈ 1.05946).
The scale originated in Nicolas Slonimsky's book Thesaurus of Scales and Melodic Patterns through the "equal division of one octave into two parts," creating a tritone, and the "interpolation of two notes," adding two consequent semitones after the two resulting notes. [15]
All seven tones are rarely heard in a single traditional composition. Like in the music of Java, five-tone modes are used, which are constructed with alternating groups of three and two consecutive scale degrees, each group being separated by a gap. Unlike Java, there are only five names for the notes, and the same five names are used in all modes.
The five pitches of the Javanese version are roughly equally spaced within the octave. As in pelog , although the intervals vary from one gamelan to the next, the intervals between notes in a scale are very close to identical for different instruments within the same gamelan .