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  2. Microtonality - Wikipedia

    en.wikipedia.org/wiki/Microtonality

    Microtonality is the use in music of microtones — intervals smaller than a semitone, also called "microintervals".It may also be extended to include any music using intervals not found in the customary Western tuning of twelve equal intervals per octave.

  3. Quarter tone - Wikipedia

    en.wikipedia.org/wiki/Quarter_tone

    A semitone is thus made of two steps, and three steps make a three-quarter tone or neutral second, half of a minor third. The 8-TET scale is composed of three-quarter tones. Four steps make a whole tone. Quarter tones and intervals close to them also occur in a number of other equally tempered tuning systems.

  4. List of substances used in rituals - Wikipedia

    en.wikipedia.org/wiki/List_of_substances_used_in...

    Use Regions/Cultures of use Morning glory: T. corymbosa, and Ipomoea violacea: Numerology "indigenous ritual use indicates dose levels for T. corymbosa, and I. violacea which are far lower than that perceived as necessary to effect hallucinosis in members of modern Western cultures. In Mexico, the only place in the world where the ingestion of ...

  5. Talk:Microtonality - Wikipedia

    en.wikipedia.org/wiki/Talk:Microtonality

    The earliest use I have found so far of the word "microtone" is in 1912 (two years before the earliest citation in the OED), but the article disparages the "widespread use" of the word. This suggests that, amongst ethnomusicologists at least, by 1912 "microtonal" and/or "microtonality" had already been in use for some time.

  6. Harry Partch's 43-tone scale - Wikipedia

    en.wikipedia.org/wiki/Harry_Partch's_43-tone_scale

    Quadrangularis Reversum, one of Partch's instruments featuring the 43-tone scale. The 43-tone scale is a just intonation scale with 43 pitches in each octave.It is based on an eleven-limit tonality diamond, similar to the seven-limit diamond previously devised by Max Friedrich Meyer [1] and refined by Harry Partch.

  7. Wolf interval - Wikipedia

    en.wikipedia.org/wiki/Wolf_interval

    with this set of chosen notes in bold face, and some of the omitted notes shown in grey. [e]This limitation on the set meantone notes and their sharps and flats that can be tuned on a keyboard at any one time, was the main reason that Baroque period keyboard and orchestral harp performers were obliged to retune their instruments in mid-performance breaks, in order to make available all the ...

  8. 12 equal temperament - Wikipedia

    en.wikipedia.org/wiki/12_equal_temperament

    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).

  9. Ditone - Wikipedia

    en.wikipedia.org/wiki/Ditone

    The Pythagorean ditone is the major third in Pythagorean tuning, which has an interval ratio of 81:64, [2] which is 407.82 cents.The Pythagorean ditone is evenly divisible by two major tones (9/8 or 203.91 cents) and is wider than a just major third (5/4, 386.31 cents) by a syntonic comma (81/80, 21.51 cents).