Bilabial fricative

Bilabial fricative

A bilabial fricative is a phone whose place of articulation is bilabial (with both lips) and whose manner of articulation is fricative.

There are two bilabial fricatives, neither of which appears in standard English. The voiced bilabial fricative (IPA: IPA| [β] ) is a sound similar to English "v", but with the air going between the lips. It is used for the Spanish letters "b" and "v", as well as in other languages. The voiceless bilabial fricative (IPA: IPA| [ɸ] ) is a sound similar to English "f", but also made between the lips. It appears in the Japanese sound romanized as "f", as well as in other languages. The two sounds, as well as the two labiodental fricatives, are used contrastively in Ewe.

George Carlin incorrectly used the phrase "bilabial fricative" to refer to the sound of blowing a raspberry, which is correctly called a linguolabial trill.

Jack Black also incorrectly used the phrase "bilabial fricative" in the special features of the Tenacious D in "The Pick of Destiny" DVD. He was actually referring to a repeated voiced bilabial plosive, often used as part of his vocal warm up.


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  • Voiced bilabial fricative — The voiced bilabial fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is IPA|β, and the equivalent X SAMPA symbol is B. The symbol IPA|β is the… …   Wikipedia

  • Voiceless bilabial fricative — The voiceless bilabial fricative is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is IPA|ɸ, and the equivalent X SAMPA symbol is p.FeaturesFeatures of the… …   Wikipedia

  • Fricative consonant — Fricatives are consonants produced by forcing air through a narrow channel made by placing two articulators close together. These may be the lower lip against the upper teeth, in the case of IPA| [f] ; the back of the tongue against the soft… …   Wikipedia

  • Bilabial ejective — pʼ Image …   Wikipedia

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  • fricative — /frik euh tiv/, Phonet. adj. 1. (of a speech sound) characterized by audible friction produced by forcing the breath through a constricted or partially obstructed passage in the vocal tract; spirantal; spirant. n. 2. Also called spirant. a… …   Universalium

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