Voiced bilabial stop

Voiced bilabial stop
b
IPA number	102
Encoding
Entity (decimal)	b
Unicode (hex)	U+0062
X-SAMPA	b
Kirshenbaum	b
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The voiced bilabial stop is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨b⟩, and the equivalent X-SAMPA symbol is b. The voiced bilabial stop occurs in English, and it is the sound denoted by the letter ⟨b⟩ in boy. Many Indian languages, such as Hindustani, have a two-way contrast between breathy voiced /bʱ/ and plain /b/.

Features

Features of the voiced bilabial stop:

• Its manner of articulation is occlusive, which means it is produced by obstructing airflow in the vocal tract. Since the consonant is also oral, with no nasal outlet, the airflow is blocked entirely, and the consonant is a stop.

• Its place of articulation is bilabial, which means it is articulated with both lips.

• Its phonation is voiced, which means the vocal cords vibrate during the articulation.

• 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 central–lateral dichotomy does not apply.

• The airstream mechanism is pulmonic, which means it is articulated by pushing air solely with the lungs and diaphragm, as in most sounds.

Varieties

Occurrence

Language		Word	IPA	Meaning	Notes
Adyghe		бгъу	[bʁʷə]	'nine'
Arabic	Standard[1]	كتب	[ˈkatabɐ]	'he wrote'	See Arabic phonology
Assyrian Neo-Aramaic		baba	[baːba]	'father'
Armenian	Eastern[2]	բարի	[bɑˈɾi]	'kind'
Basque		bero	[beɾo]	'hot'
Bengali		বলো	[bɔlo]	'say!'	Contrasts with aspirated form. See Bengali phonology
Catalan[3]		bèstia	[ˈbɛstiə]	'beast'	See Catalan phonology
Chinese	Southern Min	閩	[ban]	'Fujian province'	Only in colloquial speech.
	Wu	皮	[bi]	'skin'
	Xiang	浮	[bau]	'to float'
Czech		bota	[ˈbota]	'boot'	See Czech phonology
Dutch[4]		boer	[buːr]	'farmer'	See Dutch phonology
English		aback	[əˈbæk]	'aback'	See English phonology
Esperanto		batalo	[baˈtalo]	'war'	See Esperanto phonology
French[5]		boue	[bu]	'mud'	See French phonology
Georgian[6]		ბავშვი	[ˈbavʃvi]	'child'
German		Bub	[buːp]	'boy'	See Standard German phonology
Greek		μπόχα/bócha	[ˈbo̞xa]	'reek'	See Modern Greek phonology
Gujarati		બક્રી	[bəkri]	'goat'	See Gujarati phonology
Hebrew		בית	[bajit]	'house'	See Modern Hebrew phonology
Hindi		बाल	[bɑːl]	'hair'	Contrasts with aspirated version ⟨भ⟩. See Hindi-Urdu phonology
Hungarian		baba	[ˈbɒbɒ]	'baby'	See Hungarian phonology
Italian[7]		bile	[ˈbile]	'rage'	See Italian phonology
Japanese[8]		番/ban	[baɴ]	'(one's) turn'	See Japanese phonology
Kabardian		бгъуы	[bʁʷə]	'nine'
Korean		차비/chabi	[t͡ɕʰɐbi]	'fare'	See Korean phonology
Luxembourgish[9]		geblosen	[ɡɵ̞ˈbloːzɵ̞n]	'blown'	More often voiceless [p].[9] See Luxembourgish phonology
Macedonian		убав	[ˈubav]	'beautiful'	See Macedonian phonology
Malay		baru	[bäru]	'new'
Maltese		għatba	[aːtˈba]	'threshold'
Marathi		बटाटा	[bəˈʈaːʈaː]	'potato'	See Marathi phonology
Norwegian		bål	[ˈbɔːl]	'bonfire'	See Norwegian phonology
Persian		خوب	[xub]	'good'	See Persian phonology
Pirahã		pibaóí	[ˈpìbàóí̯]	'parent'
Polish[10]		bas	[bäs]	'bass'	See Polish phonology
Portuguese[11]		bato	[ˈbatʊ]	'I strike'	See Portuguese phonology
Punjabi		ਬਿੱਲੀ	[bɪlːi]	'cat'
Romanian[12]		bou	[bow]	'bull'	See Romanian phonology.
Russian[13]		рыба	[ˈrɨbə]	'fish'	Contrasts with palatalized form. See Russian phonology
Slovak		byť	[bic]	'to be'
Spanish[14]		invertir	[ĩmbe̞rˈtir]	'to invest'	See Spanish phonology
Swedish		bra	[ˈbɾɑː]	'good'	May be an approximant in casual speech. See Swedish phonology
Turkish		bulut	[ˈbuɫut̪]	'cloud'	See Turkish phonology
Ukrainian		брат	[ˈbrɑt̪]	'brother'	See Ukrainian phonology
Urdu		بال	[bɑːl]	'hair'	Contrasts with aspirated version(بھ). See Hindi-Urdu phonology
West Frisian		bak	[bak]	'tray'
Yi		ꁧ/bbo	[bo˧]	'mountain'
Zapotec	Tilquiapan[15]	bald	[bal͡d]	'few'

See also

• Betacism
• List of phonetics topics

References

Bibliography

• Carbonell, Joan F.; Llisterri, Joaquim (1992), "Catalan", Journal of the International Phonetic Association, 22 (1–2): 53–56, doi:10.1017/S0025100300004618 
• Cruz-Ferreira, Madalena (1995), "European Portuguese", Journal of the International Phonetic Association, 25 (2): 90–94, doi:10.1017/S0025100300005223 
• Dum-Tragut, Jasmine (2009), Armenian: Modern Eastern Armenian, Amsterdam: John Benjamins Publishing Company 
• Fougeron, Cecile; Smith, Caroline L (1993), "Illustrations of the IPA:French", Journal of the International Phonetic Association, 23 (2): 73–76, doi:10.1017/S0025100300004874 
• Gilles, Peter; Trouvain, Jürgen (2013), "Luxembourgish" (PDF), Journal of the International Phonetic Association, 43 (1): 67–74, doi:10.1017/S0025100312000278 
• Gussenhoven, Carlos (1992), "Dutch", Journal of the International Phonetic Association, 22 (2): 45–47, doi:10.1017/S002510030000459X 
• Jassem, Wiktor (2003), "Polish", Journal of the International Phonetic Association, 33 (1): 103–107, doi:10.1017/S0025100303001191 
• Martínez-Celdrán, Eugenio; Fernández-Planas, Ana Ma.; Carrera-Sabaté, Josefina (2003), "Castilian Spanish", Journal of the International Phonetic Association, 33 (2): 255–259, doi:10.1017/S0025100303001373 
• Merrill, Elizabeth (2008), "Tilquiapan Zapotec" (PDF), Journal of the International Phonetic Association, 38 (1): 107–114, doi:10.1017/S0025100308003344 
• Okada, Hideo (1991), "Phonetic Representation:Japanese", Journal of the International Phonetic Association, 21 (2): 94–97, doi:10.1017/S002510030000445X 
• Padgett, Jaye (2003), "Contrast and Post-Velar Fronting in Russian", Natural Language & Linguistic Theory, 21 (1): 39–87, doi:10.1023/A:1021879906505 
• Rogers, Derek; d'Arcangeli, Luciana (2004), "Italian", Journal of the International Phonetic Association, 34 (1): 117–121, doi:10.1017/S0025100304001628 
• Shosted, Ryan K.; Vakhtang, Chikovani (2006), "Standard Georgian", Journal of the International Phonetic Association, 36 (2): 255–264, doi:10.1017/S0025100306002659 
• Thelwall, Robin (1990), "Illustrations of the IPA: Arabic", Journal of the International Phonetic Association, 20 (2): 37–41, doi:10.1017/S0025100300004266