Voiceless bilabial trill

Voiceless bilabial trill
ʙ̥
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The voiceless bilabial trill is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ʙ̥

This sound is typologically extremely rare. It occurs in languages such as Pará Arára and Sercquiais.

Features

Features of the bilabial trill:

  • Its phonation is voiceless, which means it is produced without vibrations of the vocal cords. In some languages the vocal cords are actively separated, so it is always voiceless; in others the cords are lax, so that it may take on the voicing of adjacent sounds.
  • It is an oral consonant, which means air is allowed to escape through the mouth only.
  • Because the sound is not produced with airflow over the tongue, the centrallateral dichotomy does not apply.

Occurrence

Language Word IPA Meaning
Pará Arára[1] [ʙ̥utakeni] 'small and round cultivated field'

Notes

  1. de Souza, Isaac Costa (2010). "3". A Phonological Description of “Pet Talk” in Arara (PDF) (MA). SIL Brazil. Retrieved 2014-01-09.
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