Major fourth

Major fourth

In music, a major fourth (About this sound Play ) is the interval from the quarter tone scale, named by Ivan Wyschnegradsky, between the perfect fourth (500 cents) and the augmented fourth (600 cents) and thus 550 cents. It inverts to a minor fifth.

The term may also be applied to the ratio 45:32 or 590.22 cents (About this sound Play ), formed from the major third (5/4 = 386.31) and the major tone (9/8 = 203.91),[1] which is flat of the ET tritone, which is 600 cents.

Sources

  1. ^ Richard Mackenzie Bacon (1821). "Manuscript Work of Francesco Bianchl", The Quarterly Musical Magazine and Review, Volume 3, p.56.