Bilabial trill
The 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 IPA|ʙ (a character used as a lower case form of B in Jaŋalif and similar alphabets), and the equivalent X-SAMPA symbol is B.
In many of the languages where the bilabial trill occurs, it occurs only as part of a prenasalised bilabial stop with trilled release, IPA| [mbʙ] . This developed historically from a prenasalized stop before a relatively high back vowel, such as IPA| [mbu] . In such instances, these sounds are usually still limited to the environment of a following IPA| [u] .
There is also a very rare voiceless alveolar bilabially trilled affricate, IPA| [t̪͡ʙ̥] (occasionally written "tp") reported from a few words in the Chapacuran languages, Wari’ and Oro Win. The sound also appears as an allophone of the labialized voiceless alveolar plosive IPA|/tʷ/ of Abkhaz and Ubykh, but in those languages it is more often realised by a doubly articulated stop IPA| [t͡p] . In the Chapacuran languages, IPA| [tʙ̥] is reported almost exclusively before rounded vowels such as IPA| [o] and IPA| [y] .
Features
Features of the bilabial trill:
*Its manner of articulation is trill, which means it is produced by vibrations of the articulators. In most instances, it is only found as the trilled release of a prenasalized stop.
*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.Occurrence
ee also
*List of phonetics topics
External links
* [http://phonetics.ucla.edu/appendix/languages/orowin/orowin.html Oro Win recordings]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Trill consonant — In phonetics, a trill is a consonantal sound produced by vibrations between the articulator and the place of articulation. Standard Spanish lt;rr gt; as in perro is an alveolar trill, while in Parisian French it is almost always uvular.Trills are … Wikipedia
Bilabial ejective — pʼ Image … Wikipedia
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… … Wikipedia
List of consonants — This is a list of all consonants which can be transcribed with a single letter in the International Phonetic Alphabet, plus some of the more common consonants which require diacritics, ordered by place and manner of articulation.Ordered by place… … Wikipedia
International Phonetic Alphabet — Not to be confused with NATO phonetic alphabet. IPA redirects here. For other uses, see IPA (disambiguation). For usage of IPA in Wikipedia, see Wikipedia:IPA or Wikipedia:IPA/Introduction International Phonetic Alphabet … Wikipedia
List of phonetics topics — A * Acoustic phonetics * Active articulator * Affricate * Airstream mechanism * Alfred C. Gimson * Allophone * Alveolar approximant * Alveolar consonant * Alveolar ejective fricative * Alveolar ejective * Alveolar flap * Alveolar nasal * Alveolar … Wikipedia
Rhotic consonant — Rhotic consonants, or R like sounds, are non lateral liquid consonants. This class of sounds is difficult to characterise phonetically, though most of them share some acoustic peculiarities, most notably a lowered third formant in their sound… … Wikipedia
Labialisation — Lip rounding redirects here. See Roundedness for the lip rounding of vowels.Labialisation is a secondary articulatory feature of sounds in some languages. Labialized sounds involve the lips while the remainder of the oral cavity produces another… … Wikipedia
B — is the second letter in the Latin alphabet. Its name in English is spelled bee or occasionally be (pronEng|biː), plural bees. [ B Oxford English Dictionary, 2nd edition (1989); Merriam Webster s Third New International Dictionary of the English… … Wikipedia
Mangbetu people — Mangbetu woman in the 19th century. The Mangbetu are a people of the Democratic Republic of the Congo, living in Orientale Province. The majority live in the villages of Rungu, Poko, Watsa, Niangara, and Wamba. Contents … Wikipedia