Ditone

Ditone
Ditone on C About this sound Play .
Ditone as four just perfect fifths.

In music, a ditone is the interval 81:64[1], which is 407.82 cents. It is the major third in Pythagorean tuning. The ditone is evenly divisible by two major tones (9/8 or 203.91 cents) and is wider than a just major third (5/4, 386.31 cents) by a syntonic comma (81/80, 21.51 cents). About this sound Play

"The major third that appears commonly in the [Pythagorean] system (C-E, D-F, etc.) is more properly known as the Pythagorean ditone and consists of two major and two minor semitones (2M+2m). This is the interval that is extremely sharp, at 408c (the pure major third is only 386c)."[2]

It may also be thought of as four justly tuned fifths minus two octaves.

See also

Sources

  1. ^ Barbour, James Murray (2004). Tuning and temperament, a historical survey, p.v. ISBN 9780486434063.
  2. ^ Kite-Powell, Jeffery T. (2007). A Performer's Guide to Renaissance Music, p.281. ISBN 9780253348661.