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Musical tuning - Wikipedia, the free encyclopedia (1293 words) |
 | It is impossible to tune the twelve-note chromatic scale so that all intervals are "perfect"; many different methods with their own various compromises have thus been put forward. |
| To do this, eleven perfect fifths in each octave are flattened by a quarter of a syntonic comma, with the remaining fifth being left very sharp (such an unacceptably out-of-tune fifth is known as a wolf interval). |
| From this the heptatonic scales consisting of minor, neutral, and major seconds of maqamat are chosen, this system was first promoted by al-Farabi using a 25 tone scale. |
| Quarter tone scale - definition of Quarter tone scale in Encyclopedia (120 words) |
| A quarter tone is an interval half as wide (aurally, or logarithmically) as a semitone, which is half a whole tone. |
| In equal temperament the quarter tone is 50 cents or 2 |
| In 24 tone equal temperament, or the quarter tone scale, it is the smallest step. |
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