Cent (music): Difference between revisions
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The '''cent''' is a logarithmic measure of a musical interval introduced by Alexander Ellis. It first appears in the appendix he added to his translation of Herman von Helmholtz's ''On the Sensation of Tone As a Physiological Basis for the Theory of Music''.<ref name=Ellis/> A cent is the logarithmic division of the equitempered semitone into 100 equal parts. It is therefore the 1200th root of 2, a ratio approximately equal to (1:1.0005777895). | The '''cent''' is a logarithmic measure of a musical interval introduced by Alexander Ellis. It first appears in an article he published in 1885<ref name=tune/> and later in the appendix he added to his translation of Herman von Helmholtz's ''On the Sensation of Tone As a Physiological Basis for the Theory of Music''.<ref name=Ellis/> A cent is the logarithmic division of the equitempered semitone into 100 equal parts. It is therefore the 1200th root of 2, a ratio approximately equal to (1:1.0005777895). | ||
When two notes are played together, a difference of 2 cents is noticeable, and a difference of 5 cents is heard as out of tune.<ref name=tune/> | When two notes are played together, a difference of 2 cents is noticeable, and a difference of 5 cents is heard as out of tune.<ref name=tune/> | ||
Revision as of 10:54, 12 July 2012
The cent is a logarithmic measure of a musical interval introduced by Alexander Ellis. It first appears in an article he published in 1885[1] and later in the appendix he added to his translation of Herman von Helmholtz's On the Sensation of Tone As a Physiological Basis for the Theory of Music.[2] A cent is the logarithmic division of the equitempered semitone into 100 equal parts. It is therefore the 1200th root of 2, a ratio approximately equal to (1:1.0005777895).
When two notes are played together, a difference of 2 cents is noticeable, and a difference of 5 cents is heard as out of tune.[1]
References
- ↑ 1.0 1.1 Alexander J Ellis (March 25, 1885). "On the musical scales of various nations; §III.–Cents". Journal of the Society of Arts 33: p. 487.
- ↑ Herman von Helmholtz (1912). “Footnote, p. 41 and Appendix XX, Section C”, On the Sensation of Tone As a Physiological Basis for the Theory of Music, Alexander Ellis translation of 4th German ed. Longmans, Green.