The voiced bilabial nasal is a type of
consonant
In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract, except for the h sound, which is pronounced without any stricture in the vocal tract. Examples are and pronou ...
al sound which has been observed to occur in about 96% of spoken
language
Language is a structured system of communication that consists of grammar and vocabulary. It is the primary means by which humans convey meaning, both in spoken and signed language, signed forms, and may also be conveyed through writing syste ...
s.
The symbol in the
International Phonetic Alphabet
The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standard written representation ...
that represents this sound is , and the equivalent
X-SAMPA symbol is
m
. The bilabial nasal occurs in
English, and it is the sound represented by "m" in ''map'' and ''rum''. Very few languages (e.g.
Wyandot) are known to lack this sound. A small number of languages have been observed to lack independent nasal phonemes altogether, such as
Quileute,
Makah, and
Central Rotokas.
Features

Features of the voiced bilabial nasal:
Varieties
Occurrence
Palatalized
Velarized
See also
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List of phonetics topics
A
* Acoustic phonetics
* Active articulator
* Affricate
* Airstream mechanism
* Alexander John Ellis
* Alexander Melville Bell
* Alfred C. Gimson
* Allophone
* Alveolar approximant ()
* Alveolar click ()
* Alveolar consonant
* Alveolar e ...
Notes
References
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External links
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{{IPA navigation
Bilabial consonants
Pulmonic consonants
Nasal consonants
Labial–coronal consonants
Voiced consonants