Voiced Bilabial Fricative

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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 , and the equivalent X-SAMPA symbol is B. The symbol is the Greek letter beta. Features of this consonant:
  • Its manner of articulation is fricative, which means it is produced by constricting air flow through a narrow channel at the place of articulation, causing turbulence.
  • Its place of articulation is bilabial which means it is articulated with both lips.
  • Its phonation type is voiced, which means the vocal cords are vibrating during the articulation.
  • It is an oral consonant, which means air is allowed to escape through the mouth.
  • It is a central consonant, which means it is produced by allowing the airstream to flow over the middle of the tongue, rather than the sides.
* The airstream mechanism is pulmonic egressive, which means it is articulated by pushing air out of the lungs and through the vocal tract, rather than from the glottis or the mouth.

 

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labial velar approximant
labiodental approximant
labiodental nasal
alveolar lateral approximant
lateral alveolar click
alveolar lateral flap
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retroflex lateral approximant
velar lateral approximant
voiced alveolar lateral fricative
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voiced glottal fricative
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voiced palatal fricative
voiced palatal plosive
voiced pharyngeal fricative
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voiced retroflex fricative
voiced retroflex plosive
voiced uvular fricative
voiced uvular plosive
voiced velar fricative
voiceless alveolar fricative
voiceless alveolo palatal fricative
voiceless bilabial fricative
voiceless dental fricative