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  2. Quarter tone - Wikipedia

    en.wikipedia.org/wiki/Quarter_tone

    A quarter tone is a pitch halfway between the usual notes of a chromatic scale or an interval about half as wide (orally, or logarithmically) ... For example, some ...

  3. Quarter-comma meantone - Wikipedia

    en.wikipedia.org/wiki/Quarter-comma_meantone

    Notice that, in quarter-comma meantone, the seventeenth is ⁠ 81 / 80 ⁠ times narrower than in Pythagorean tuning. This difference in size, equal to about 21.506 cents, is called the syntonic comma. This implies that the fifth is a quarter of a syntonic comma narrower than the justly tuned Pythagorean fifth.

  4. Interval (music) - Wikipedia

    en.wikipedia.org/wiki/Interval_(music)

    The exact size of such intervals depends on the tuning system, but they often vary from the diatonic interval sizes by about a quarter tone (50 cents, half a chromatic step). For example, the neutral second , the characteristic interval of Arabic music , in 24-TET is 150 cents, exactly halfway between a minor second and major second.

  5. List of pitch intervals - Wikipedia

    en.wikipedia.org/wiki/List_of_pitch_intervals

    Comparison between tunings: Pythagorean, equal-tempered, quarter-comma meantone, and others.For each, the common origin is arbitrarily chosen as C. The degrees are arranged in the order or the cycle of fifths; as in each of these tunings except just intonation all fifths are of the same size, the tunings appear as straight lines, the slope indicating the relative tempering with respect to ...

  6. Flat (music) - Wikipedia

    en.wikipedia.org/wiki/Flat_(music)

    A quarter-tone flat, half flat, or demiflat indicates the use of quarter tones; it may be marked with various symbols including a flat with a slash or a reversed flat sign (). A three-quarter-tone flat, flat and a half or sesquiflat, is represented by a demiflat and a whole flat ().

  7. Microtonality - Wikipedia

    en.wikipedia.org/wiki/Microtonality

    Although some synthesizers allow the creation of customized microtonal scales, this solution does not allow compositions to be transposed. For example, if each B note is raised one quarter tone, then the "raised 7th" would only affect a C major scale.

  8. List of quarter tone pieces - Wikipedia

    en.wikipedia.org/wiki/List_of_quarter_tone_pieces

    Dialogue, for two pianos tuned a quarter-tone apart, eight hands, W.o.O. (1959) Dithyrambe, for two pianos tuned a quarter-tone apart, Op. 12 (1923–1924) Études sur les mouvements rotatoires, for two pianos tuned a quarter-tone apart, eight hands, Op. 45a.; for chamber orchestra, Op. 45c (1961)

  9. Enharmonic scale - Wikipedia

    en.wikipedia.org/wiki/Enharmonic_scale

    More broadly, an enharmonic scale is a scale in which (using standard notation) there is no exact equivalence between a sharpened note and the flattened note it is enharmonically related to, such as in the quarter tone scale. As an example, F ♯ and G ♭ are equivalent in a chromatic scale (the same sound is spelled differently), but they are ...