Orwell tetrad
IMPORTED REVISION FROM WIKISPACES
This is an imported revision from Wikispaces. The revision metadata is included below for reference:
- This revision was by author genewardsmith and made on 2011-07-25 15:00:58 UTC.
- The original revision id was 242772917.
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Original Wikitext content:
The //orwell tetrad// is a four-note chord which in close position (reduced to the octave) consists of a chain of three subminor thirds, thirds of apporximately 7/6 in size, and a major third, of approximately 5/4 in size, which closes at the octave since the orwell comma, 1728/1715, is tempered out. Equal temperaments tempering out 1728/1715 and hence containing orwell tetrads include 22, 26, 27, 31, 53, 58, 80, 84 and 111.
Original HTML content:
<html><head><title>orwell tetrad</title></head><body>The <em>orwell tetrad</em> is a four-note chord which in close position (reduced to the octave) consists of a chain of three subminor thirds, thirds of apporximately 7/6 in size, and a major third, of approximately 5/4 in size, which closes at the octave since the orwell comma, 1728/1715, is tempered out. Equal temperaments tempering out 1728/1715 and hence containing orwell tetrads include 22, 26, 27, 31, 53, 58, 80, 84 and 111.</body></html>