Semicomma
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The semicomma,[1] also Fokker's comma (after 31-TET pioneer Adriaan Fokker), is type of small musical interval, or comma, in microtonal music equivalent to 2109375:2097152,[1] or . This is a ratio of approximately 1:1.0058283805847168, or about 10.06 cents[2] ( Play (help·info)). It is derived from the difference in pitch between three 75/64 just augmented seconds ( Play just augmented second (help·info)) and one 8/5 just minor sixth ( Play minor sixth (help·info)) begun on the same root ((3 × 274.58) - (1 × 813.69) = 823.74 - 813.69 = 10.05 cents).[3]
See also[edit | edit source]
Sources[edit | edit source]
- ↑ 1.0 1.1 Haluska, Jan (2003). The Mathematical Theory of Tone Systems, p.xxix. ISBN 80-88683-28-9.
- ↑ "List of Intervals", Huygens-Fokker.org.
- ↑ "Semicomma", Xenharmonic wiki.
This article uses material from Semicomma on Wikipedia (view authors). License under CC BY-SA 3.0. |