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Wah-wah (music)

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Wah-wah (music)

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Wah-wah (or wa-wa) is an imitative word (or onomatopoeia) for the sound of altering the resonance of musical notes to extend expressiveness, sounding much like a human voice saying the syllable wah. The wah-wah effect is a spectral glide, a "modification of the vowel quality of a tone" (Erickson 1975, p. 72).


The wah-wah effect is produced by periodically bringing in and out of play treble frequencies while a note is sustained. The word is derived from the sound of the effect itself—in other words, it is onomatopoeic. The method of production varies from one type of instrument to another. On brass instruments, it is usually created by means of a mute, particularly with the harmon (also called a "wa-wa" mute) or plunger mute. Woodwind instruments may use "false fingerings" to produce the effect. Any electrified instrument may use an auxiliary signal-processing device, usually operated by a pedal. This electronic means is most often thought of in connection with the electric guitar, but is also often used with the electric piano (Kernfeld 2002).

Wah-wah in trumpet and trombone playing

This technique has been used in contemporary music. Karlheinz Stockhausen notates the use of the wah-wah mute in his Punkte (1952/1962) in terms of transitions between open to close using open and closed circles connected by a line (Erickson 1975, p. 73). Although the most common method of producing wah-wah on brass instruments is with a mute, some players have used electronic filtering, notably Miles Davis on trumpet (Kernfeld 2002). On trombone it was introduced by Tricky Sam Nanton in Duke Ellington's Orchestra, where it became part of the so-called "jungle sound" of the band in the late 1920s.

Wah-wah in electronic music

In electronic music, wah-wah effects are easy to produce by controlling any number of filter types with a modulation envelope (Anon. 2007).

See also


  • Erickson, Robert (1975). Sound Structure in Music. Berkeley and Los Angeles: University of California Press. ISBN 0-520-02376-5.
  • Kernfeld, Barry (2002). "Wa-wa [wah-wah]". The New Grove Dictionary of Jazz, second edition, ediited by Barry Dean Kernfeld. New York: Grove Dictionaries. ISBN 1561592846; ISBN 033369189X.

External links

  • A YouTube video of electric guitar played with a Wah-wah pedal
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