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Voiced bilabial plosive
b
IPA number	102
Audio sample
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Encoding
Entity (decimal)	b
Unicode (hex)	U+0062
X-SAMPA	b
Braille

The voiced bilabial plosive or stop is a type of consonantal sound used in many 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 obey .

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 plosive.
• 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.
• Its airstream mechanism is pulmonic, which means it is articulated by pushing air solely with the intercostal muscles and abdominal muscles, as in most sounds.

Varieties

Occurrence

See also

• Betacism
• List of phonetics topics

Notes

1. Thelwall (1990:37)
2. Dum-Tragut (2009:13)
3. Carbonell & Llisterri (1992:53)
4. ^ Goblirsch (2018), pp. 134–5, citing Fischer-Jørgensen (1952) and Abrahams (1949, pp. 116–21, 228–30).
5. ^ Puggaard-Rode, Horslund & Jørgensen (2022).
6. Gussenhoven (1992:45)
7. Fougeron & Smith (1993:73)
8. Shosted & Chikovani (2006:255)
9. Rogers & d'Arcangeli (2004:117)
10. Okada (1999:117)
11. ^ Gilles & Trouvain (2013), pp. 67–68.
12. Jassem (2003:103)
13. Cruz-Ferreira (1995:91)
14. DEX Online :
15. Padgett (2003:42)
16. Landau et al. (1999), p. 66.
17. Martínez-Celdrán, Fernández-Planas & Carrera-Sabaté (2003:255)
18. Danyenko & Vakulenko (1995), p. 4.
19. Merrill (2008:108)

References

• Abrahams, Henrik (1949), Études phonétiques sur les tendances évolutives des occlusives germaniques, Aarhus University Press
• Carbonell, Joan F.; Llisterri, Joaquim (1992), "Catalan", Journal of the International Phonetic Association, 22 (1–2): 53–56, doi:10.1017/S0025100300004618, S2CID 249411809
• Cruz-Ferreira, Madalena (1995), "European Portuguese", Journal of the International Phonetic Association, 25 (2): 90–94, doi:10.1017/S0025100300005223, S2CID 249414876
• Danyenko, Andrii; Vakulenko, Serhii (1995), Ukrainian, Lincom Europa, ISBN 9783929075083
• Dum-Tragut, Jasmine (2009), Armenian: Modern Eastern Armenian, Amsterdam: John Benjamins Publishing Company
• Fischer-Jørgensen, Eli (1952), "Om stemtheds assimilation", in Bach, H.; et al. (eds.), Festskrift til L. L. Hammerich, Copenhagen: G. E. C. Gad, pp. 116–129
• 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, S2CID 249404451
• Gilles, Peter; Trouvain, Jürgen (2013), "Luxembourgish", Journal of the International Phonetic Association, 43 (1): 67–74, doi:10.1017/S0025100312000278
• Goblirsch, Kurt (2018), Gemination, Lenition, and Vowel Lengthening: On the History of Quantity in Germanic, Cambridge University Press, ISBN 978-1-107-03450-1
• Gussenhoven, Carlos (1992), "Dutch", Journal of the International Phonetic Association, 22 (2): 45–47, doi:10.1017/S002510030000459X, S2CID 243772965
• Jassem, Wiktor (2003), "Polish", Journal of the International Phonetic Association, 33 (1): 103–107, doi:10.1017/S0025100303001191
• Landau, Ernestina; Lončarić, Mijo; Horga, Damir; Škarić, Ivo (1999), "Croatian", Handbook of the International Phonetic Association: A guide to the use of the International Phonetic Alphabet, Cambridge: Cambridge University Press, pp. 66–69, ISBN 978-0-521-65236-0
• 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 (1999), "Japanese", in International Phonetic Association (ed.), Handbook of the International Phonetic Association: A Guide to the Use of the International Phonetic Alphabet, Cambridge University Press, pp. 117–119, ISBN 978-0-52163751-0
• Padgett, Jaye (2003), "Contrast and Post-Velar Fronting in Russian", Natural Language & Linguistic Theory, 21 (1): 39–87, doi:10.1023/A:1021879906505, S2CID 13470826
• Puggaard-Rode, Rasmus; Horslund, Camilla Søballe; Jørgensen, Henrik (2022), "The rarity of intervocalic voicing of stops in Danish spontaneous speech", Laboratory Phonology, 13 (1), doi:10.16995/labphon.6449, hdl:1887/3304670
• Rogers, Derek; d'Arcangeli, Luciana (2004), "Italian", Journal of the International Phonetic Association, 34 (1): 117–121, doi:10.1017/S0025100304001628
• Shosted, Ryan K.; Chikovani, Vakhtang (2006), "Standard Georgian" (PDF), 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, S2CID 243640727

External links

• List of languages with [b] on PHOIBLE

v t e International Phonetic Alphabet (chart)
IPA topics IPA International Phonetic Association History of the alphabet Extensions for disordered speech (extIPA) Voice Quality Symbols (VoQS) Journal of the IPA (JIPA) Special topics Cursive forms Case variants Obsolete and nonstandard symbols Naming conventions Sinological extensions World Orthography IPA chart for English dialects Encodings ASCII encodings SAMPA X-SAMPA Kirshenbaum TIPA Phonetic symbols in Unicode IPA number IPA Braille
Consonants Pulmonic consonants Place → Labial Coronal Dorsal Laryngeal Manner ↓ Bi­labial Labio­dental Linguo­labial Dental Alveolar Post­alveolar Retro­flex Palatal Velar Uvular Pharyn­geal/epi­glottal Glottal Nasal m̥ m ɱ̊ ɱ n̼ n̥ n ɳ̊ ɳ ɲ̊ ɲ ŋ̊ ŋ ɴ̥ ɴ Plosive p b p̪ b̪ t̼ d̼ t d ʈ ɖ c ɟ k ɡ q ɢ ʡ ʔ Sibilant affricate ts dz t̠ʃ d̠ʒ tʂ dʐ tɕ dʑ Non-sibilant affricate pɸ bβ p̪f b̪v t̪θ d̪ð tɹ̝̊ dɹ̝ t̠ɹ̠̊˔ d̠ɹ̠˔ cç ɟʝ kx ɡɣ qχ ɢʁ ʡʜ ʡʢ ʔh Sibilant fricative s z ʃ ʒ ʂ ʐ ɕ ʑ Non-sibilant fricative ɸ β f v θ̼ ð̼ θ ð θ̠ ð̠ ɹ̠̊˔ ɹ̠˔ ɻ̊˔ ɻ˔ ç ʝ x ɣ χ ʁ ħ ʕ h ɦ Approximant ʋ ɹ ɻ j ɰ ʔ̞ Tap/flap ⱱ̟ ⱱ ɾ̼ ɾ̥ ɾ ɽ̊ ɽ ɢ̆ ʡ̆ Trill ʙ̥ ʙ r̥ r ɽ̊r̥ ɽr ʀ̥ ʀ ʜ ʢ Lateral affricate tɬ dɮ tꞎ d𝼅 c𝼆 ɟʎ̝ k𝼄 ɡʟ̝ Lateral fricative ɬ ɮ ꞎ 𝼅 𝼆 ʎ̝ 𝼄 ʟ̝ Lateral approximant l ɭ ʎ ʟ ʟ̠ Lateral tap/flap ɺ̥ ɺ 𝼈̥ 𝼈 ʎ̆ ʟ̆ IPA help  audio full chart template Symbols to the right in a cell are voiced, to the left are voiceless. Shaded areas denote articulations judged impossible. Non-pulmonic consonants BL LD D A PA RF P V U EG Ejective Stop pʼ tʼ ʈʼ cʼ kʼ qʼ ʡʼ Affricate p̪fʼ t̪θʼ tsʼ t̠ʃʼ tʂʼ tɕʼ kxʼ qχʼ Fricative ɸʼ fʼ θʼ sʼ ʃʼ ʂʼ ɕʼ xʼ χʼ Lateral affricate tɬʼ c𝼆ʼ k𝼄ʼ q𝼄ʼ Lateral fricative ɬʼ Click (top: velar; bottom: uvular) Tenuis kʘ qʘ kǀ qǀ kǃ qǃ k𝼊 q𝼊 kǂ qǂ Voiced ɡʘ ɢʘ ɡǀ ɢǀ ɡǃ ɢǃ ɡ𝼊 ɢ𝼊 ɡǂ ɢǂ Nasal ŋʘ ɴʘ ŋǀ ɴǀ ŋǃ ɴǃ ŋ𝼊 ɴ𝼊 ŋǂ ɴǂ ʞ   Tenuis lateral kǁ qǁ Voiced lateral ɡǁ ɢǁ Nasal lateral ŋǁ ɴǁ Implosive Voiced ɓ ɗ ᶑ ʄ ɠ ʛ Voiceless ɓ̥ ɗ̥ ᶑ̊ ʄ̊ ɠ̊ ʛ̥ IPA help  audio full chart template Co-articulated consonants Nasal n͡m Labial–alveolar ɳ͡m Labial–retroflex ŋ͡m Labial–velar Plosive t͡pd͡b Labial–alveolar ʈ͡pɖ͡b Labial–retroflex k͡pɡ͡b Labial–velar q͡ʡ Uvular–epiglottal q͡p Labial–uvular Fricative/approximant ɥ̊ɥ Labial–palatal ʍw Labial–velar ɧ Sj-sound (variable) Lateral approximant ɫ Velarized alveolar Implosive ɠ̊͜ɓ̥ ɠ͡ɓ Labial–velar Ejective t͡pʼ Labial–alveolar IPA help full chart template Other Nasal labial–velar approximant Nasal palatal approximant Voiceless bidental fricative Voiceless bilabially post-trilled dental stop Voiceless nasal glottal approximant
Vowels Front Central Back Close i y ɨ ʉ ɯ u Near-close ɪ ʏ ʊ Close-mid e ø ɘ ɵ ɤ o Mid e̞ ø̞ ə ɤ̞ o̞ Open-mid ɛ œ ɜ ɞ ʌ ɔ Near-open æ ɐ Open a ɶ ä ɑ ɒ IPA help  audio full chart template Legend: unrounded • rounded

• Voiced oral consonants
• Bilabial stops
• Pulmonic consonants
• Labial–coronal consonants