Ditone
The ditone (or ditonus ) in music denotes an interval of two large whole tones .
In Pythagorean mood of ditone corresponds to the frequency ratio 81 / 64 and is known as Pythagorean large third :
- ≈ 407.82 cents
This is a syntonic point ( 81 / 80 ≈ 21.51 cents) is greater than the pure major third ( 5 / 4 = 80 / 64 ≈ 386.31 cents).
The Pythagorean third octave is obtained by the superposition of four fifths integer (frequency ratio 3 / 2 ):
- → → → two octaves lower:
In ancient Greek and medieval music theory , the ditone was generally viewed as a dissonance . In the 12th century, Theinred von Dover was the first music theorist to allow thirds to be considered consonances in principle , but emphasized that the Pythagorean thirds did not represent consonances. The English music theorist Walter Odington (14th century) also declared the ditone with the proportion 81:64 to be dissonant, but mentioned that most considered this interval to be consonant because of its proximity to the interval with the proportion 5: 4.
See also
Web links
- Ditone. In: Grove Music Online (English; subscription required).
Individual evidence
- ↑ John L. Snyder: Theinred of Dover. In: Grove Music Online (English; subscription required).
- ↑ John L. Snyder: Theinred of Dover on Consonance: A Chapter in the History of Harmony. In: Music Theory Spectrum , Vol. 5, Spring, 1983, pp. 110-120, JSTOR 746098
- ↑ Wilfried Neumaier: What is a sound system? (= Sources and studies on music history from antiquity to the present , No. 9). Publishing house Peter Lang, Frankfurt a. M. / Bern / New York 1986, ISBN 3-8204-9492-8 , p. 215.