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Ragisma
In music and tuning, the ragisma is an interval with the ratio of 4375:4374,〔Haluska, Jan (2003). ''The Mathematical Theory of Tone Systems'', p.xxviii. ISBN 80-88683-28-9.〕 ≈0.396 cents (a superparticular ratio). It is usually defined as the difference between the septimal minor third (7:6) and two Bohlen–Pierce small semitones (27:25 ). It is also the difference between minor Bohlen–Pierce diesis (245:243) and septimal semicomma (126:125). () ==Sources== 〔
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