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In music, a breedsma is an interval between pitches with the ratio of 2401:2400,[1] which is the difference between the septimal diesis (49:48, also known as Slendro diesis) and the septimal sixth-tone (50:49, also known as jubilisma).[2] It is about 0.72 cents (About this sound Play ).

2401/2400 = 128/75 / (8/7)4
2401/2400 = (7/6)4 / 50/27

It is therefore the difference between one kind of classic diminished seventh and four septimal major seconds, or four septimal minor thirds and one kind of classic major seventh.


  1. ^ Haluska, Jan (2003). The Mathematical Theory of Tone Systems, p.xxviii. ISBN 80-88683-28-9.
  2. ^ Manuel Op de Coul. "List of intervals". Stichting Huygens-Fokker.