Orwell tetrad: Difference between revisions

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	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 approximately [[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; in other words, a 7/6-7/6-7/6-5/4 chord. Equal temperaments tempering out 1728/1715 and hence containing orwell tetrads include 22, 26, 27, 31, 53, 58, 80, 84, 111 and 137.		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 approximately [[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; in other words, a 7/6-7/6-7/6-5/4 chord. This chord contains two 5ths that are flattened by [[36/35]], which is about a quartertone. Equal temperaments tempering out 1728/1715 and hence containing orwell tetrads include 22, 26, 27, 31, 53, 58, 80, 84, 111 and 137.

	[[File:OrwellTetrad22edo.mp3]]		[[File:OrwellTetrad22edo.mp3]]