Ragisma

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title: "Ragisma" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["7-limit-tuning-and-intervals", "commas-(music)", "superparticular-intervals"] topic_path: "arts" source: "https://en.wikipedia.org/wiki/Ragisma" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

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In music and tuning, the ragisma is an interval with the ratio of 4375:4374, ≈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), as well as the difference between the septimal third tone (28:27) and the greater diesis (648:625). ()

Haluska, Jan (2003). ''The Mathematical Theory of Tone Systems'', p.xxviii. {{ISBN. 80-88683-28-9.

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