bilabial trill

Information about bilabial trill

IPA – number	121
IPA – text	ʙ
IPA – image
Entity	ʙ
X-SAMPA	`B\`
Kirshenbaum	`b<trl>`
Sound sample (helpinfo)

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 ʙ, 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, [mbʙ]. This developed historically from a prenasalized stop before a relatively high back vowel, such as [mbu]. In such instances, these sounds are usually still limited to the environment of a following [u].

ʙ was a lowercase form of B in Jaŋalif and similar alphabets.

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

Language		Word	IPA	Meaning	Notes
Baka		example needed		--
Ngwe	Lebang dialect	[àʙɨ́ ́]		'ash'
Kele		[mbʙuen]		'its fruit'
Mangbetu		example needed		--	contrasts with voiceless counterpart
Mewun		example needed		--	contrasts with voiceless counterpart
Pirahã		example needed	--	--	allophone of /b/ before /o/
Yi	Liangshang dialect	example needed	--	--

The Extended SAM Phonetic Alphabet (X-SAMPA) is a variant of SAMPA developed in 1995 by John C. Wells, professor of phonetics at the University of London. It was designed to unify the individual language SAMPA alphabets, and extend SAMPA to cover the entire range of characters in
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Kirshenbaum, sometimes called ASCII-IPA or erkIPA, is a system used to represent the International Phonetic Alphabet (IPA) in ASCII. It was developed for Usenet, notably the newsgroups sci.lang and alt.usage.english.
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consonant is a sound in spoken language that is characterized by a closure or stricture of the vocal tract sufficient to cause audible turbulence. The word consonant
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See Language (journal) for the linguistics journal.

A language is a system of symbols and the rules used to manipulate them. Language can also refer to the use of such systems as a general phenomenon.
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Near‑close
Close‑mid
Mid
Open‑mid
Near‑open
Open

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manner of articulation describes how the tongue, lips, and other speech organs are involved in making a sound make contact. Often the concept is only used for the production of consonants.
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trill is a consonantal sound produced by vibrations between the articulator and the place of articulation. Standard Spanish <rr> as in perro is an alveolar trill, while in Parisian French it is almost always uvular.

Trills are very different from flaps.
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Prenasalized stops are phonetic sequences of nasal plus plosive that behave phonologically like single consonants. That is, like affricates, the reasons for considering these sequences to be single consonants is in their behavior, not in their actual composition.
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place of articulation (also point of articulation) of a consonant is the point of contact, where an obstruction occurs in the vocal tract between an active (moving) articulator (typically some part of the tongue) and a passive (stationary) articulator (typically some part of
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In phonetics, a bilabial consonant is a consonant articulated with both lips. The bilabial consonants identified by the International Phonetic Alphabet (IPA) are:

IPA Description Example
Language Orthography IPA Meaning
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Lips are a visible organ at the mouth of humans and many animals. Both lips are soft, protruding, movable, and serve primarily for food intake, as a tactile sensory organ, and in articulation of speech.
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In phonetics, phonation is the "use of the laryngeal system to generate an audible source of acoustic energy, i.e., sound, which can then be modified by the articulatory actions of the rest of the vocal apparatus.
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An oral consonant is a consonant sound in speech that is made by allowing air to escape from the mouth. To create an intended oral consonant sound, the entire mouth plays a role in modifying the air's passageway.
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A central or medial consonant is a consonant sound that is produced when air flows across the center of the mouth over the tongue.

Examples of central consonants are the voiceless velar plosive (the "k" in the English word "skin"), the voiced alveolar fricative (the
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In phonetics, initiation is the action by which an air-flow is created through the vocal tract. Along with articulation, it is one of the two mandatory aspects of sound production: without initiation, there is no sound.
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In human speech, pulmonic egressive sounds are those in which the air stream is created by the lungs (pulmonic) exhaling and pushing air out (egressive) through the mouth or nose. The majority of sounds in most languages are both pulmonic and egressive.
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lungs flank the heart and great vessels in the chest cavity.^[1]]]

The lung is the essential respiration organ in air-breathing vertebrates, the most primitive being the lungfish.
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The space between the vocal cords is called the glottis.

Function

As the vocal cords vibrate, the resulting vibration produces a "buzzing" quality to the speech, called voice or voicing.
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Kele is spoken in the easterly section of inland Manus Island, New Guinea.

Sample Vocabulary

Nouns

Bed: Petlé
Road: Sal
House: Um
Stone: Pat

Verbs

Learn: Penow
Teach: Te-penow
Die: Mat
Kill: Te-mete-i
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Pirahã (also Pirahá, Pirahán) is a language spoken by the Pirahã — an indigenous people of Amazonas, Brazil, who live along the Maici river, a tributary of the Amazon.
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Latin alphabet
Child systems Numerous: see Alphabets derived from the Latin
Sister systems Cyrillic
Coptic
Armenian
Runic/Futhark
Unicode range See Latin characters in Unicode
ISO 15924 Latn

Note
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Yi (also Moso, Lolo, Noso, etc.) is a family of closely related tonal Tibeto-Burman languages spoken by the Yi people. Although linguists still use the term Lolo or Loloish, the Yi people themselves regard it as pejorative.
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Note: This page may contain IPA phonetic symbols in Unicode.
The Yi scripts, also known as Cuan [tswen] or Wei, are used to write the Yi languages.
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The voiceless alveolar bilabially trilled affricate, [t̪͡ʙ̥] (occasionally written "t^p"), is one of the rarest human speech sounds.
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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