Neutralization (linguistics)
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In
phonology Phonology is the branch of linguistics that studies how languages or dialects systematically organize their sounds or, for sign languages, their constituent parts of signs. The term can also refer specifically to the sound or sign system of a ...
and
linguistics Linguistics is the scientific study of human language. It is called a scientific study because it entails a comprehensive, systematic, objective, and precise analysis of all aspects of language, particularly its nature and structure. Linguis ...
, a phoneme () is a unit of sound that can distinguish one
word A word is a basic element of language that carries an semantics, objective or pragmatics, practical semantics, meaning, can be used on its own, and is uninterruptible. Despite the fact that language speakers often have an intuitive grasp of w ...
from another in a particular
language Language is a structured system of communication. The structure of a language is its grammar and the free components are its vocabulary. Languages are the primary means by which humans communicate, and may be conveyed through a variety of met ...
. For example, in most
dialects of English Dialects are linguistic varieties that may differ in pronunciation, vocabulary, spelling and grammar. For the classification of varieties of English only in terms of pronunciation, see regional accents of English. Overview Dialects can be defi ...
, with the notable exception of the
West Midlands West or Occident is one of the four cardinal directions or points of the compass. It is the opposite direction from east and is the direction in which the Sun sets on the Earth. Etymology The word "west" is a Germanic word passed into some ...
and the north-west of England, the sound patterns (''sin'') and (''sing'') are two separate words that are distinguished by the substitution of one phoneme, , for another phoneme, . Two words like this that differ in meaning through the contrast of a single phoneme form a ''
minimal pair In phonology, minimal pairs are pairs of words or phrases in a particular language, spoken or signed, that differ in only one phonological element, such as a phoneme, toneme or chroneme, and have distinct meanings. They are used to demonstrate th ...
''. If, in another language, any two sequences differing only by
pronunciation Pronunciation is the way in which a word or a language is spoken. This may refer to generally agreed-upon sequences of sounds used in speaking a given word or language in a specific dialect ("correct pronunciation") or simply the way a particular ...
of the final sounds or are perceived as being the same in meaning, then these two sounds are interpreted as phonetic variants of a single phoneme in that language. Phonemes that are established by the use of minimal pairs, such as ''tap'' vs ''tab'' or ''pat'' vs ''bat'', are written between slashes: , . To show pronunciation, linguists use
square brackets A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'r ...
: (indicating an aspirated ''p'' in ''pat''). There are differing views as to exactly what phonemes are and how a given language should be analyzed in ''phonemic'' (or ''phonematic'') terms. However, a phoneme is generally regarded as an
abstraction Abstraction in its main sense is a conceptual process wherein general rules and concepts are derived from the usage and classification of specific examples, literal ("real" or "concrete") signifiers, first principles, or other methods. "An abstr ...
of a set (or
equivalence class In mathematics, when the elements of some set S have a notion of equivalence (formalized as an equivalence relation), then one may naturally split the set S into equivalence classes. These equivalence classes are constructed so that elements a ...
) of
speech Speech is a human vocal communication using language. Each language uses Phonetics, phonetic combinations of vowel and consonant sounds that form the sound of its words (that is, all English words sound different from all French words, even if ...
sounds (''
phones A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into ele ...
'') that are perceived as equivalent to each other in a given language. For example, the English ''k'' sounds in the words ''kill'' and ''skill'' are not identical (as described
below Below may refer to: *Earth *Ground (disambiguation) *Soil *Floor *Bottom (disambiguation) Bottom may refer to: Anatomy and sex * Bottom (BDSM), the partner in a BDSM who takes the passive, receiving, or obedient role, to that of the top or ...
), but they are distributional variants of a single phoneme . Speech sounds that differ but do not create a meaningful change in the word are known as ''
allophone In phonology, an allophone (; from the Greek , , 'other' and , , 'voice, sound') is a set of multiple possible spoken soundsor ''phones''or signs used to pronounce a single phoneme in a particular language. For example, in English, (as in ''s ...
s'' of the same phoneme. Allophonic variation may be conditioned, in which case a certain phoneme is realized as a certain allophone in particular phonological environments, or it may otherwise be free, and may vary by speaker or by
dialect The term dialect (from Latin , , from the Ancient Greek word , 'discourse', from , 'through' and , 'I speak') can refer to either of two distinctly different types of Linguistics, linguistic phenomena: One usage refers to a variety (linguisti ...
. Therefore, phonemes are often considered to constitute an abstract
underlying representation In some models of phonology as well as morphophonology in the field of linguistics, the underlying representation (UR) or underlying form (UF) of a word or morpheme is the abstract form that a word or morpheme is postulated to have before any phono ...
for segments of words, while speech sounds make up the corresponding
phonetic Phonetics is a branch of linguistics that studies how humans produce and perceive sounds, or in the case of sign languages, the equivalent aspects of sign. Linguists who specialize in studying the physical properties of speech are phoneticians. ...
realization, or the surface form.


Notation

Phonemes are conventionally placed between slashes in transcription, whereas speech sounds (phones) are placed between square brackets. Thus, represents a sequence of three phonemes, , , (the word ''push'' in Standard English), and represents the phonetic sequence of sounds ( aspirated '' p''), , (the usual pronunciation of ''push''). This should not be confused with the similar convention of the use of
angle brackets A bracket is either of two tall fore- or back-facing punctuation marks commonly used to isolate a segment of text or data from its surroundings. Typically deployed in symmetric pairs, an individual bracket may be identified as a 'left' or 'r ...
to enclose the units of
orthography An orthography is a set of conventions for writing a language, including norms of spelling, hyphenation, capitalization, word breaks, emphasis, and punctuation. Most transnational languages in the modern period have a writing system, and mos ...
,
grapheme In linguistics, a grapheme is the smallest functional unit of a writing system. The word ''grapheme'' is derived and the suffix ''-eme'' by analogy with ''phoneme'' and other names of emic units. The study of graphemes is called ''graphemics' ...
s. For example, ⟨f⟩ represents the written letter (grapheme) ''f''. The symbols used for particular phonemes are often taken from the
International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic transcription, phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standa ...
(IPA), the same set of symbols most commonly used for phones. (For computer-typing purposes,
systems A system is a group of interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its environment, is described by its boundaries, structure and purpose and express ...
such as
X-SAMPA The Extended Speech Assessment Methods Phonetic Alphabet (X-SAMPA) is a variant of SAMPA developed in 1995 by John C. Wells, professor of phonetics at University College London. It is designed to unify the individual language SAMPA alphabets, and ...
exist to represent IPA symbols using only
ASCII ASCII ( ), abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Because of ...
characters.) However, descriptions of particular languages may use different conventional symbols to represent the phonemes of those languages. For languages whose writing systems employ the
phonemic principle A phonemic orthography is an orthography (system for writing a language) in which the graphemes (written symbols) correspond to the phonemes (significant spoken sounds) of the language. Natural languages rarely have perfectly phonemic orthographi ...
, ordinary letters may be used to denote phonemes, although this approach is often hampered by the complexity of the relationship between orthography and pronunciation (see below).


Assignment of speech sounds to phonemes

A phoneme is a sound or a group of different sounds perceived to have the same function by speakers of the language or dialect in question. An example is the
English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ide ...
phoneme , which occurs in words such as ''cat'', ''kit'', ''scat'', ''skit''. Although most native speakers do not notice this, in most English dialects, the "c/k" sounds in these words are not identical: in , the sound is aspirated, but in , it is unaspirated. The words, therefore, contain different ''speech sounds'', or ''
phones A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into ele ...
'', transcribed for the aspirated form and for the unaspirated one. These different sounds are nonetheless considered to belong to the same phoneme, because if a speaker used one instead of the other, the meaning of the word would not change: using the aspirated form in ''skill'' might sound odd, but the word would still be recognized. By contrast, some other sounds would cause a change in meaning if substituted: for example, substitution of the sound would produce the different word ''still'', and that sound must therefore be considered to represent a different phoneme (the phoneme ). The above shows that in English, and are
allophones In phonology, an allophone (; from the Greek , , 'other' and , , 'voice, sound') is a set of multiple possible spoken soundsor ''phones''or signs used to pronounce a single phoneme in a particular language. For example, in English, (as in ''s ...
of a single phoneme . In some languages, however, and are perceived by native speakers as different sounds, and substituting one for the other can change the meaning of a word. In those languages, therefore, the two sounds represent different phonemes. For example, in Icelandic, is the first sound of , meaning "cheerful", but is the first sound of , meaning "riddles". Icelandic, therefore, has two separate phonemes and .


Minimal pairs

A pair of words like and (above) that differ only in one phone is called a
minimal pair In phonology, minimal pairs are pairs of words or phrases in a particular language, spoken or signed, that differ in only one phonological element, such as a phoneme, toneme or chroneme, and have distinct meanings. They are used to demonstrate th ...
for the two alternative phones in question (in this case, and ). The existence of minimal pairs is a common test to decide whether two phones represent different phonemes or are allophones of the same phoneme. To take another example, the minimal pair ''tip'' and ''dip'' illustrates that in English, and belong to separate phonemes, and ; since both words have different meanings, English-speakers must be conscious of the distinction between the two sounds. Signed languages, such as
American Sign Language American Sign Language (ASL) is a natural language that serves as the predominant sign language of Deaf communities in the United States of America and most of Anglophone Canadians, Anglophone Canada. ASL is a complete and organized visual lang ...
(ASL), also have minimal pairs, differing only in (exactly) one of the signs' parameters: handshape, movement, location, palm orientation, and
nonmanual signal A Nonmanual feature, also sometimes called nonmanual signal or sign language expression, are the features of signed languages that do not use the hands. Nonmanual features are gramaticised and a necessary component in many signs, in the same way t ...
or marker. A minimal pair may exist in the signed language if the basic sign stays the same, but one of the parameters changes. However, the absence of minimal pairs for a given pair of phones does not always mean that they belong to the same phoneme: they may be so dissimilar phonetically that it is unlikely for speakers to perceive them as the same sound. For example, English has no minimal pair for the sounds (as in ''hat'') and (as in ''bang''), and the fact that they can be shown to be in
complementary distribution In linguistics, complementary distribution, as distinct from contrastive distribution and free variation, is the relationship between two different elements of the same kind in which one element is found in one set of environments and the other ele ...
could be used to argue for their being allophones of the same phoneme. However, they are so dissimilar phonetically that they are considered separate phonemes. Phonologists have sometimes had recourse to "near minimal pairs" to show that speakers of the language perceive two sounds as significantly different even if no exact minimal pair exists in the lexicon. It is virtually impossible to find a minimal pair to distinguish English from , yet it seems uncontroversial to claim that the two consonants are distinct phonemes. The two words 'pressure' and 'pleasure' can serve as a near minimal pair.


Suprasegmental phonemes

Besides segmental phonemes such as vowels and consonants, there are also
suprasegmental In linguistics, prosody () is concerned with elements of speech that are not individual phonetic segments (vowels and consonants) but are properties of syllables and larger units of speech, including linguistic functions such as intonation, str ...
features of pronunciation (such as tone and
stress Stress may refer to: Science and medicine * Stress (biology), an organism's response to a stressor such as an environmental condition * Stress (linguistics), relative emphasis or prominence given to a syllable in a word, or to a word in a phrase ...
, syllable boundaries and other forms of
juncture Juncture, in linguistics, is the manner of moving (transition) between two successive syllables in speech. An important type of juncture is the suprasegmental phonemic cue by means of which a listener can distinguish between two otherwise ident ...
, nasalization and
vowel harmony In phonology, vowel harmony is an Assimilation (linguistics), assimilatory process in which the vowels of a given domain – typically a phonological word – have to be members of the same natural class (thus "in harmony"). Vowel harmony is t ...
), which, in many languages, change the meaning of words and so are phonemic. ''Phonemic stress'' is encountered in languages such as English. For example, there are two words spelled ''invite'', one is a verb and is stressed on the second syllable, the other is a noun and stressed on the first syllable (without changing any of the individual sounds). The position of the stress distinguishes the words and so a full phonemic specification would include indication of the position of the stress: for the verb, for the noun. In other languages, such as French, word stress cannot have this function (its position is generally predictable) and so it is not phonemic (and therefore not usually indicated in dictionaries). ''Phonemic tones'' are found in languages such as
Mandarin Chinese Mandarin (; ) is a group of Chinese (Sinitic) dialects that are natively spoken across most of northern and southwestern China. The group includes the Beijing dialect, the basis of the phonology of Standard Chinese, the official language of ...
in which a given syllable can have five different tonal pronunciations: The tone "phonemes" in such languages are sometimes called ''tonemes''. Languages such as English do not have phonemic tone, but they use intonation for functions such as emphasis and attitude.


Distribution of allophones

When a phoneme has more than one
allophone In phonology, an allophone (; from the Greek , , 'other' and , , 'voice, sound') is a set of multiple possible spoken soundsor ''phones''or signs used to pronounce a single phoneme in a particular language. For example, in English, (as in ''s ...
, the one actually heard at a given occurrence of that phoneme may be dependent on the phonetic environment (surrounding sounds). Allophones that normally cannot appear in the same environment are said to be in
complementary distribution In linguistics, complementary distribution, as distinct from contrastive distribution and free variation, is the relationship between two different elements of the same kind in which one element is found in one set of environments and the other ele ...
. In other cases, the choice of allophone may be dependent on the individual speaker or other unpredictable factors. Such allophones are said to be in
free variation In linguistics, free variation is the phenomenon of two (or more) sounds or forms appearing in the same environment without a change in meaning and without being considered incorrect by native speakers. Sociolinguists argue that describing such v ...
, but allophones are still selected in a specific phonetic context, not the other way around.


Background and related ideas

The term ''phonème'' (from grc, φώνημα, phōnēma, "sound made, utterance, thing spoken, speech, language"Liddell, H.G. & Scott, R. (1940). ''A Greek-English Lexicon. revised and augmented throughout by Sir Henry Stuart Jones. with the assistance of. Roderick McKenzie.'' Oxford: Clarendon Press.) was reportedly first used by
A. Dufriche-Desgenettes Antoni Dufriche-Desgenettes (26 February 1804, Paris – 19 December 1878, Saint-Mandé), baptized ''Antoine Marie Dufriche-Foulaines'', was a French seafaring merchant, poet and amateur phonetician. Biography His father François Nicolas, a broth ...
in 1873, but it referred only to a speech sound. The term ''phoneme'' as an
abstraction Abstraction in its main sense is a conceptual process wherein general rules and concepts are derived from the usage and classification of specific examples, literal ("real" or "concrete") signifiers, first principles, or other methods. "An abstr ...
was developed by the Polish linguist
Jan Baudouin de Courtenay Jan Niecisław Ignacy Baudouin de Courtenay (13 March 1845 – 3 November 1929) was a Polish linguist and Slavist, best known for his theory of the phoneme and phonetic alternations. For most of his life Baudouin de Courtenay worked at Imperi ...
and his student
Mikołaj Kruszewski Mikołaj Habdank Kruszewski, (Russian language, Russianized, ''Nikolay Vyacheslavovich Krushevsky'', Никола́й Вячесла́вович Круше́вский) (December 18, 1851, Lutsk – November 12, 1887, Kazan) was a Polish linguist ...
during 1875–1895. The term used by these two was ''fonema'', the basic unit of what they called ''psychophonetics''. Daniel Jones became the first linguist in the western world to use the term ''phoneme'' in its current sense, employing the word in his article "The phonetic structure of the Sechuana Language". The concept of the phoneme was then elaborated in the works of
Nikolai Trubetzkoy Prince Nikolai Sergeyevich Trubetzkoy ( rus, Никола́й Серге́евич Трубецко́й, p=trʊbʲɪtsˈkoj; 16 April 1890 – 25 June 1938) was a Russian linguist and historian whose teachings formed a nucleus of the Prague School ...
and others of the
Prague School The Prague school or Prague linguistic circle is a language and literature society. It started in 1926 as a group of linguists, philologists and literary critics in Prague. Its proponents developed methods of structuralist literary analysis an ...
(during the years 1926–1935), and in those of structuralists like
Ferdinand de Saussure Ferdinand de Saussure (; ; 26 November 1857 – 22 February 1913) was a Swiss linguist, semiotician and philosopher. His ideas laid a foundation for many significant developments in both linguistics and semiotics in the 20th century. He is widel ...
,
Edward Sapir Edward Sapir (; January 26, 1884 – February 4, 1939) was an American Jewish anthropologist-linguist, who is widely considered to be one of the most important figures in the development of the discipline of linguistics in the United States. Sa ...
, and
Leonard Bloomfield Leonard Bloomfield (April 1, 1887 – April 18, 1949) was an American linguist who led the development of structural linguistics in the United States during the 1930s and the 1940s. He is considered to be the father of American distributionalism ...
. Some structuralists (though not Sapir) rejected the idea of a cognitive or psycholinguistic function for the phoneme. Later, it was used and redefined in
generative linguistics Generative grammar, or generativism , is a linguistic theory that regards linguistics as the study of a hypothesised innate grammatical structure. It is a biological or biologistic modification of earlier structuralist theories of linguistic ...
, most famously by
Noam Chomsky Avram Noam Chomsky (born December 7, 1928) is an American public intellectual: a linguist, philosopher, cognitive scientist, historian, social critic, and political activist. Sometimes called "the father of modern linguistics", Chomsky is ...
and
Morris Halle Morris Halle (; July 23, 1923 – April 2, 2018) was a Latvian-American, Latvian-born Jewish United States, American Linguistics, linguist who was an Institute Professor, and later professor emeritus, of linguistics at the Massachusetts Institute ...
, and remains central to many accounts of the development of modern
phonology Phonology is the branch of linguistics that studies how languages or dialects systematically organize their sounds or, for sign languages, their constituent parts of signs. The term can also refer specifically to the sound or sign system of a ...
. As a theoretical concept or model, though, it has been supplemented and even replaced by others. Some linguists (such as
Roman Jakobson Roman Osipovich Jakobson (russian: Рома́н О́сипович Якобсо́н; October 11, 1896Kucera, Henry. 1983. "Roman Jakobson." ''Language: Journal of the Linguistic Society of America'' 59(4): 871–883. – July 18,Morris Halle Morris Halle (; July 23, 1923 – April 2, 2018) was a Latvian-American, Latvian-born Jewish United States, American Linguistics, linguist who was an Institute Professor, and later professor emeritus, of linguistics at the Massachusetts Institute ...
) proposed that phonemes may be further decomposable into
feature Feature may refer to: Computing * Feature (CAD), could be a hole, pocket, or notch * Feature (computer vision), could be an edge, corner or blob * Feature (software design) is an intentional distinguishing characteristic of a software item ...
s, such features being the true minimal constituents of language. Features overlap each other in time, as do
suprasegmental In linguistics, prosody () is concerned with elements of speech that are not individual phonetic segments (vowels and consonants) but are properties of syllables and larger units of speech, including linguistic functions such as intonation, str ...
phonemes in oral language and many phonemes in sign languages. Features could be characterized in different ways: Jakobson and colleagues defined them in acoustic terms, Chomsky and Halle used a predominantly articulatory basis, though retaining some acoustic features, while Ladefoged's system is a purely articulatory system apart from the use of the acoustic term 'sibilant'. In the description of some languages, the term
chroneme In linguistics, a chroneme is a basic, theoretical unit of sound that can distinguish words by duration only of a vowel or consonant. The noun ''chroneme'' is derived , and the suffixed ''-eme'', which is analogous to the ''-eme'' in ''phoneme'' ...
has been used to indicate contrastive length or ''duration'' of phonemes. In languages in which tones are phonemic, the tone phonemes may be called
toneme Tone is the use of pitch in language to distinguish lexical or grammatical meaning – that is, to distinguish or to inflect words. All verbal languages use pitch to express emotional and other paralinguistic information and to convey emph ...
s. Though not all scholars working on such languages use these terms, they are by no means obsolete. By analogy with the phoneme, linguists have proposed other sorts of underlying objects, giving them names with the suffix ''-eme'', such as ''
morpheme A morpheme is the smallest meaningful Constituent (linguistics), constituent of a linguistic expression. The field of linguistics, linguistic study dedicated to morphemes is called morphology (linguistics), morphology. In English, morphemes are ...
'' and ''
grapheme In linguistics, a grapheme is the smallest functional unit of a writing system. The word ''grapheme'' is derived and the suffix ''-eme'' by analogy with ''phoneme'' and other names of emic units. The study of graphemes is called ''graphemics' ...
''. These are sometimes called
emic unit In linguistics and related fields, an emic unit is a type of abstract object. cited in Kinds of emic units are generally denoted by terms with the suffix ''-eme'', such as ''phoneme'', ''grapheme'', and ''morpheme''. The term "emic unit" is defi ...
s. The latter term was first used by
Kenneth Pike Kenneth Lee Pike (June 9, 1912 – December 31, 2000) was an American linguist and anthropologist. He was the originator of the theory of tagmemics, the coiner of the terms "emic" and "etic" and the developer of the constructed language K ...
, who also generalized the concepts of
emic and etic In anthropology, folkloristics, and the social and behavioral sciences, emic () and etic () refer to two kinds of field research done and viewpoints obtained. The "emic" approach is an insider's perspective, which looks at the beliefs, values ...
description (from ''phonemic'' and ''phonetic'' respectively) to applications outside linguistics.


Restrictions on occurrence

Languages do not generally allow words or
syllable A syllable is a unit of organization for a sequence of speech sounds typically made up of a syllable nucleus (most often a vowel) with optional initial and final margins (typically, consonants). Syllables are often considered the phonological "bu ...
s to be built of any arbitrary sequences of phonemes. There are
phonotactic Phonotactics (from Ancient Greek "voice, sound" and "having to do with arranging") is a branch of phonology that deals with restrictions in a language on the permissible combinations of phonemes. Phonotactics defines permissible syllable struc ...
restrictions on which sequences of phonemes are possible and in which environments certain phonemes can occur. Phonemes that are significantly limited by such restrictions may be called ''restricted phonemes''. In English, examples of such restrictions include the following: * , as in ''sing'', occurs only at the end of a syllable, never at the beginning (in many other languages, such as
Māori Māori or Maori can refer to: Relating to the Māori people * Māori people of New Zealand, or members of that group * Māori language, the language of the Māori people of New Zealand * Māori culture * Cook Islanders, the Māori people of the C ...
, Swahili, Tagalog, and
Thai Thai or THAI may refer to: * Of or from Thailand, a country in Southeast Asia ** Thai people, the dominant ethnic group of Thailand ** Thai language, a Tai-Kadai language spoken mainly in and around Thailand *** Thai script *** Thai (Unicode block ...
, can appear word-initially). * occurs only at the beginning of a syllable, never at the end (a few languages, such as
Arabic Arabic (, ' ; , ' or ) is a Semitic languages, Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C ...
and
Romanian Romanian may refer to: *anything of, from, or related to the country and nation of Romania **Romanians, an ethnic group **Romanian language, a Romance language ***Romanian dialects, variants of the Romanian language **Romanian cuisine, traditional ...
, allow syllable-finally). * In non-rhotic dialects, can occur immediately only before a vowel, never before a consonant. * and occur only before a vowel, never at the end of a syllable (except in interpretations in which a word like ''boy'' is analyzed as ). Some phonotactic restrictions can alternatively be analyzed as cases of neutralization. See Neutralization and archiphonemes below, particularly the example of the occurrence of the three English nasals before stops.


Biuniqueness

Biuniqueness is a requirement of classic structuralist phonemics. It means that a given
phone A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into ele ...
, wherever it occurs, must unambiguously be assigned to one and only one phoneme. In other words, the mapping between phones and phonemes is required to be many-to-one rather than
many-to-many Many-to-many communication occurs when information is shared between groups. Members of a group receive information from multiple senders. Wikis are a type of many-to-many communication, where multiple editors collaborate to create content that is ...
. The notion of biuniqueness was controversial among some pre-
generative Generative may refer to: * Generative actor, a person who instigates social change * Generative art, art that has been created using an autonomous system that is frequently, but not necessarily, implemented using a computer * Generative music, mus ...
linguists and was prominently challenged by
Morris Halle Morris Halle (; July 23, 1923 – April 2, 2018) was a Latvian-American, Latvian-born Jewish United States, American Linguistics, linguist who was an Institute Professor, and later professor emeritus, of linguistics at the Massachusetts Institute ...
and
Noam Chomsky Avram Noam Chomsky (born December 7, 1928) is an American public intellectual: a linguist, philosopher, cognitive scientist, historian, social critic, and political activist. Sometimes called "the father of modern linguistics", Chomsky is ...
in the late 1950s and early 1960s. An example of the problems arising from the biuniqueness requirement is provided by the phenomenon of
flapping Flapping or tapping, also known as alveolar flapping, intervocalic flapping, or ''t''-voicing, is a phonological process found in many varieties of English, especially North American, Cardiff, Ulster, Australian and New Zealand English, whereby ...
in
North American English North American English (NAmE, NAE) is the most generalized variety of the English language as spoken in the United States and Canada. Because of their related histories and cultures, plus the similarities between the pronunciations (accents), v ...
. This may cause either or (in the appropriate environments) to be realized with the phone (an
alveolar flap The voiced alveolar tap or flap is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents a dental, alveolar, or postalveolar tap or flap is . The terms ''tap'' and ''flap' ...
). For example, the same flap sound may be heard in the words ''hitting'' and ''bidding'', although it is intended to realize the phoneme in the first word and in the second. This appears to contradict biuniqueness. For further discussion of such cases, see the next section.


Neutralization and archiphonemes

Phonemes that are contrastive in certain environments may not be contrastive in all environments. In the environments where they do not contrast, the contrast is said to be neutralized. In these positions it may become less clear which phoneme a given phone represents. Absolute neutralization is a phenomenon in which a segment of the
underlying representation In some models of phonology as well as morphophonology in the field of linguistics, the underlying representation (UR) or underlying form (UF) of a word or morpheme is the abstract form that a word or morpheme is postulated to have before any phono ...
is not realized in any of its
phonetic Phonetics is a branch of linguistics that studies how humans produce and perceive sounds, or in the case of sign languages, the equivalent aspects of sign. Linguists who specialize in studying the physical properties of speech are phoneticians. ...
representations (surface forms). The term was introduced by
Paul Kiparsky René Paul Victor Kiparsky (born January 28, 1941) is a Finnish professor of linguistics at Stanford University. He is the son of the Russian-born linguist and Slavicist Valentin Kiparsky. Kiparsky is especially known for his contributions to ...
(1968), and contrasts with contextual neutralization where some phonemes are not contrastive in certain environments. Some phonologists prefer not to specify a unique phoneme in such cases, since to do so would mean providing redundant or even arbitrary information – instead they use the technique of
underspecification In theoretical linguistics, underspecification is a phenomenon in which certain features are omitted in underlying representations. Restricted underspecification theory holds that features should only be underspecified if their values are predicta ...
. An archiphoneme is an object sometimes used to represent an underspecified phoneme. An example of neutralization is provided by the Russian vowels and . These phonemes are contrasting in stressed syllables, but in unstressed syllables the contrast is lost, since both are reduced to the same sound, usually (for details, see
vowel reduction in Russian In the pronunciation of the Russian language, several ways of vowel reduction (and its absence) are distinguished between the standard language and dialects. Russian orthography most often does not reflect vowel reduction, which can confuse for ...
). In order to assign such an instance of to one of the phonemes and , it is necessary to consider morphological factors (such as which of the vowels occurs in other forms of the words, or which
inflection In linguistic morphology, inflection (or inflexion) is a process of word formation in which a word is modified to express different grammatical categories such as tense, case, voice, aspect, person, number, gender, mood, animacy, and defin ...
al pattern is followed). In some cases even this may not provide an unambiguous answer. A description using the approach of underspecification would not attempt to assign to a specific phoneme in some or all of these cases, although it might be assigned to an archiphoneme, written something like , which reflects the two neutralized phonemes in this position, or , reflecting its unmerged values. A somewhat different example is found in English, with the three nasal phonemes . In word-final position these all contrast, as shown by the minimal triplet ''sum'' , ''sun'' , ''sung'' . However, before a
stop Stop may refer to: Places * Stop, Kentucky, an unincorporated community in the United States * Stop (Rogatica), a village in Rogatica, Republika Srpska, Bosnia and Herzegovina Facilities * Bus stop * Truck stop, a type of rest stop for truck d ...
such as (provided there is no
morpheme A morpheme is the smallest meaningful Constituent (linguistics), constituent of a linguistic expression. The field of linguistics, linguistic study dedicated to morphemes is called morphology (linguistics), morphology. In English, morphemes are ...
boundary between them), only one of the nasals is possible in any given position: before , before or , and before , as in ''limp, lint, link'' (, , ). The nasals are therefore not contrastive in these environments, and according to some theorists this makes it inappropriate to assign the nasal phones heard here to any one of the phonemes (even though, in this case, the phonetic evidence is unambiguous). Instead they may analyze these phones as belonging to a single archiphoneme, written something like , and state the
underlying representation In some models of phonology as well as morphophonology in the field of linguistics, the underlying representation (UR) or underlying form (UF) of a word or morpheme is the abstract form that a word or morpheme is postulated to have before any phono ...
s of ''limp, lint, link'' to be . This latter type of analysis is often associated with
Nikolai Trubetzkoy Prince Nikolai Sergeyevich Trubetzkoy ( rus, Никола́й Серге́евич Трубецко́й, p=trʊbʲɪtsˈkoj; 16 April 1890 – 25 June 1938) was a Russian linguist and historian whose teachings formed a nucleus of the Prague School ...
of the
Prague school The Prague school or Prague linguistic circle is a language and literature society. It started in 1926 as a group of linguists, philologists and literary critics in Prague. Its proponents developed methods of structuralist literary analysis an ...
. Archiphonemes are often notated with a capital letter within double virgules or pipes, as with the examples and given above. Other ways the second of these has been notated include , and . Another example from English, but this time involving complete phonetic convergence as in the Russian example, is the flapping of and in some American English (described above under Biuniqueness). Here the words ''betting'' and ''bedding'' might both be pronounced . Under the
generative grammar Generative grammar, or generativism , is a linguistic theory that regards linguistics as the study of a hypothesised innate grammatical structure. It is a biological or biologistic modification of earlier structuralist theories of linguistic ...
theory of linguistics, if a speaker applies such flapping consistently, morphological evidence (the pronunciation of the related forms ''bet'' and ''bed'', for example) would reveal which phoneme the flap represents, once it is known which morpheme is being used. However, other theorists would prefer not to make such a determination, and simply assign the flap in both cases to a single archiphoneme, written (for example) . Further mergers in English are
plosive In phonetics, a plosive, also known as an occlusive or simply a stop, is a pulmonic consonant in which the vocal tract is blocked so that all airflow ceases. The occlusion may be made with the tongue tip or blade (, ), tongue body (, ), lips ...
s after , where conflate with , as suggested by the alternative spellings '' sketti'' and ''sghetti''. That is, there is no particular reason to transcribe ''spin'' as rather than as , other than its historical development, and it might be less ambiguously transcribed .


Morphophonemes

A morphophoneme is a theoretical unit at a deeper level of abstraction than traditional phonemes, and is taken to be a unit from which
morpheme A morpheme is the smallest meaningful Constituent (linguistics), constituent of a linguistic expression. The field of linguistics, linguistic study dedicated to morphemes is called morphology (linguistics), morphology. In English, morphemes are ...
s are built up. A morphophoneme within a morpheme can be expressed in different ways in different
allomorph In linguistics, an allomorph is a variant phonetic form of a morpheme, or, a unit of meaning that varies in sound and spelling without changing the meaning. The term ''allomorph'' describes the realization of phonological variations for a specif ...
s of that morpheme (according to
morphophonological Morphophonology (also morphophonemics or morphonology) is the branch of linguistics that studies the interaction between morphology (linguistics), morphological and phonology, phonological or phonetic processes. Its chief focus is the sound chan ...
rules). For example, the English plural morpheme ''-s'' appearing in words such as ''cats'' and ''dogs'' can be considered to be a single morphophoneme, which might be transcribed (for example) or , and which is realized phonemically as after most
voiceless consonant In linguistics, voicelessness is the property of sounds being pronounced without the larynx vibrating. Phonologically, it is a type of phonation, which contrasts with other states of the larynx, but some object that the word phonation implies v ...
s (as in ''cats'') and as in other cases (as in ''dogs'').


Numbers of phonemes in different languages

All known languages use only a small subset of the many possible
sounds In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the ...
that the human
speech organs The field of articulatory phonetics is a subfield of phonetics that studies articulation and ways that humans produce speech. Articulatory phoneticians explain how humans produce speech sounds via the interaction of different physiological struct ...
can produce, and, because of
allophony In phonology, an allophone (; from the Greek , , 'other' and , , 'voice, sound') is a set of multiple possible spoken soundsor ''phones''or signs used to pronounce a single phoneme in a particular language. For example, in English, (as in ''s ...
, the number of distinct phonemes will generally be smaller than the number of identifiably different sounds. Different languages vary considerably in the number of phonemes they have in their systems (although apparent variation may sometimes result from the different approaches taken by the linguists doing the analysis). The total phonemic inventory in languages varies from as few as 9–11 in Pirahã and 11 in
Rotokas Rotokas is a North Bougainville language spoken by about 4,320 people on the island of Bougainville, an island located to the east of New Guinea which is part of Papua New Guinea. According to Allen and Hurd (1963), there are three identifie ...
to as many as 141 in !Xũ. The number of phonemically distinct
vowel A vowel is a syllabic speech sound pronounced without any stricture in the vocal tract. Vowels are one of the two principal classes of speech sounds, the other being the consonant. Vowels vary in quality, in loudness and also in quantity (leng ...
s can be as low as two, as in Ubykh and
Arrernte Arrernte (also spelt Aranda, etc.) is a descriptor related to a group of Aboriginal Australian peoples from Central Australia. It may refer to: * Arrernte (area), land controlled by the Arrernte Council (?) * Arrernte people, Aboriginal Australi ...
. At the other extreme, the
Bantu Bantu may refer to: *Bantu languages, constitute the largest sub-branch of the Niger–Congo languages *Bantu peoples, over 400 peoples of Africa speaking a Bantu language * Bantu knots, a type of African hairstyle *Black Association for National ...
language Ngwe has 14 vowel qualities, 12 of which may occur long or short, making 26 oral vowels, plus six nasalized vowels, long and short, making a total of 38 vowels; while !Xóõ achieves 31 pure vowels, not counting its additional variation by vowel length, by varying the
phonation The term phonation has slightly different meanings depending on the subfield of phonetics. Among some phoneticians, ''phonation'' is the process by which the vocal folds produce certain sounds through quasi-periodic vibration. This is the defini ...
. As regards
consonant In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract. Examples are and pronounced with the lips; and pronounced with the front of the tongue; and pronounced wit ...
phonemes,
Puinave Puinave, Waipunavi (Guaipunabi) or Wanse ( pui, Wãnsöhöt) is an indigenous language of Colombia and Venezuela. It is generally considered to be an unclassified language. Varieties Varieties listed by Mason (1950): *Puinave (Epined) **Weste ...
and the Papuan language Tauade each have just seven, and
Rotokas Rotokas is a North Bougainville language spoken by about 4,320 people on the island of Bougainville, an island located to the east of New Guinea which is part of Papua New Guinea. According to Allen and Hurd (1963), there are three identifie ...
has only six. !Xóõ, on the other hand, has somewhere around 77, and Ubykh 81. The
English language English is a West Germanic language of the Indo-European language family, with its earliest forms spoken by the inhabitants of early medieval England. It is named after the Angles, one of the ancient Germanic peoples that migrated to the is ...
uses a rather large set of 13 to 21 vowel phonemes, including diphthongs, although its 22 to 26
consonants In articulatory phonetics, a consonant is a speech sound that is articulated with complete or partial closure of the vocal tract. Examples are and pronounced with the lips; and pronounced with the front of the tongue; and pronounced wit ...
are close to average. Across all languages, the average number of consonant phonemes per language is about 22, while the average number of vowel phonemes is about 8. Some languages, such as French, have no phonemic tone or
stress Stress may refer to: Science and medicine * Stress (biology), an organism's response to a stressor such as an environmental condition * Stress (linguistics), relative emphasis or prominence given to a syllable in a word, or to a word in a phrase ...
, while
Cantonese Cantonese ( zh, t=廣東話, s=广东话, first=t, cy=Gwóngdūng wá) is a language within the Chinese (Sinitic) branch of the Sino-Tibetan languages originating from the city of Guangzhou (historically known as Canton) and its surrounding are ...
and several of the
Kam–Sui languages The Kam–Sui languages () are a branch of the Kra–Dai languages spoken by the Kam–Sui peoples. They are spoken mainly in eastern Guizhou, western Hunan, and northern Guangxi in southern China. Small pockets of Kam–Sui speakers are also ...
have six to nine tones (depending on how they're counted), and the Kam-Sui
Dong language Dong may refer to: * Dong language (China), a Kra–Dai language of China * Dong language (Nigeria) Dong, or Donga, is a poorly documented language in Nigeria. Though clearly Niger–Congo, it is difficult to classify; British linguist Roger Bl ...
has nine to 15 tones by the same measure. One of the
Kru languages The Kru languages are spoken by the Kru people from the southeast of Liberia to the west of Ivory Coast. Classification According to Güldemann (2018), Kru lacks sufficient lexical resemblances and noun class resemblances to conclude a relati ...
, Wobé, has been claimed to have 14, though this is disputed. The most common vowel system consists of the five vowels . The most common consonants are . Relatively few languages lack any of these consonants, although it does happen: for example,
Arabic Arabic (, ' ; , ' or ) is a Semitic languages, Semitic language spoken primarily across the Arab world.Semitic languages: an international handbook / edited by Stefan Weninger; in collaboration with Geoffrey Khan, Michael P. Streck, Janet C ...
lacks , standard Hawaiian lacks ,
Mohawk Mohawk may refer to: Related to Native Americans *Mohawk people, an indigenous people of North America (Canada and New York) *Mohawk language, the language spoken by the Mohawk people *Mohawk hairstyle, from a hairstyle once thought to have been t ...
and
Tlingit The Tlingit ( or ; also spelled Tlinkit) are indigenous peoples of the Pacific Northwest Coast of North America. Their language is the Tlingit language (natively , pronounced ),
lack and ,
Hupa Hupa (Yurok language term: Huep'oola' / Huep'oolaa = "Hupa people") are a Native American people of the Athabaskan-speaking ethnolinguistic group in northwestern California. Their endonym is Natinixwe, also spelled Natinook-wa, meaning "Peopl ...
lacks both and a simple , colloquial Samoan lacks and , while
Rotokas Rotokas is a North Bougainville language spoken by about 4,320 people on the island of Bougainville, an island located to the east of New Guinea which is part of Papua New Guinea. According to Allen and Hurd (1963), there are three identifie ...
and
Quileute The Quileute , are a Native American people in western Washington state in the United States, currently numbering approximately 2,000. They are a federally recognized tribe: the ''Quileute Tribe of the Quileute Reservation''. The Quileute peop ...
lack and .


The non-uniqueness of phonemic solutions

During the development of phoneme theory in the mid-20th century phonologists were concerned not only with the procedures and principles involved in producing a phonemic analysis of the sounds of a given language, but also with the reality or uniqueness of the phonemic solution. These were central concerns of
phonology Phonology is the branch of linguistics that studies how languages or dialects systematically organize their sounds or, for sign languages, their constituent parts of signs. The term can also refer specifically to the sound or sign system of a ...
. Some writers took the position expressed by
Kenneth Pike Kenneth Lee Pike (June 9, 1912 – December 31, 2000) was an American linguist and anthropologist. He was the originator of the theory of tagmemics, the coiner of the terms "emic" and "etic" and the developer of the constructed language K ...
: "There is only one accurate phonemic analysis for a given set of data", while others believed that different analyses, equally valid, could be made for the same data.
Yuen Ren Chao Yuen Ren Chao (; 3 November 1892 – 25 February 1982), also known as Zhao Yuanren, was a Chinese-American linguist, educator, scholar, poet, and composer, who contributed to the modern study of Chinese phonology and grammar. Chao was born an ...
(1934), in his article "The non-uniqueness of phonemic solutions of phonetic systems" stated "given the sounds of a language, there are usually more than one possible way of reducing them to a set of phonemes, and these different systems or solutions are not simply correct or incorrect, but may be regarded only as being good or bad for various purposes". The linguist F. W. Householder referred to this argument within linguistics as "God's Truth" (i.e. the stance that a given language has an intrinsic structure to be discovered) vs. "hocus-pocus" (i.e. the stance that any proposed, coherent structure is as good as any other). Different analyses of the English vowel system may be used to illustrate this. The article
English phonology Like many other languages, English has wide variation in pronunciation, both historically and from dialect to dialect. In general, however, the regional dialects of English share a largely similar (but not identical) phonological system. Among ...
states that "English has a particularly large number of vowel phonemes" and that "there are 20 vowel phonemes in Received Pronunciation, 14–16 in General American and 20–21 in Australian English". Although these figures are often quoted as fact, they actually reflect just one of many possible analyses, and later in the English Phonology article an alternative analysis is suggested in which some diphthongs and long vowels may be interpreted as comprising a short vowel linked to either or . The fullest exposition of this approach is found in Trager and Smith (1951), where all long vowels and diphthongs ("complex nuclei") are made up of a short vowel combined with either , or (plus for rhotic accents), each comprising two phonemes. The transcription for the vowel normally transcribed would instead be , would be and would be , or /ar/ in a rhotic accent if there is an in the spelling. It is also possible to treat English long vowels and diphthongs as combinations of two vowel phonemes, with long vowels treated as a sequence of two short vowels, so that 'palm' would be represented as /paam/. English can thus be said to have around seven vowel phonemes, or even six if schwa were treated as an allophone of or of other short vowels. In the same period there was disagreement about the correct basis for a phonemic analysis. The structuralist position was that the analysis should be made purely on the basis of the sound elements and their distribution, with no reference to extraneous factors such as grammar, morphology or the intuitions of the native speaker; this position is strongly associated with
Leonard Bloomfield Leonard Bloomfield (April 1, 1887 – April 18, 1949) was an American linguist who led the development of structural linguistics in the United States during the 1930s and the 1940s. He is considered to be the father of American distributionalism ...
.
Zellig Harris Zellig Sabbettai Harris (; October 23, 1909 – May 22, 1992) was an influential American linguist, mathematical syntactician, and methodologist of science. Originally a Semiticist, he is best known for his work in structural linguistics and dis ...
claimed that it is possible to discover the phonemes of a language purely by examining the distribution of phonetic segments. Referring to mentalistic definitions of the phoneme, Twaddell (1935) stated "Such a definition is invalid because (1) we have no right to guess about the linguistic workings of an inaccessible 'mind', and (2) we can secure no advantage from such guesses. The linguistic processes of the 'mind' as such are quite simply unobservable; and introspection about linguistic processes is notoriously a fire in a wooden stove." This approach was opposed to that of
Edward Sapir Edward Sapir (; January 26, 1884 – February 4, 1939) was an American Jewish anthropologist-linguist, who is widely considered to be one of the most important figures in the development of the discipline of linguistics in the United States. Sa ...
, who gave an important role to native speakers' intuitions about where a particular sound or group of sounds fitted into a pattern. Using English as an example, Sapir argued that, despite the superficial appearance that this sound belongs to a group of three nasal consonant phonemes (/m/, /n/ and /ŋ/), native speakers feel that the velar nasal is really the sequence ɡ. The theory of
generative phonology Generative grammar, or generativism , is a linguistic theory that regards linguistics as the study of a hypothesised innate grammatical structure. It is a biological or biologistic modification of earlier structuralist theories of linguistics ...
which emerged in the 1960s explicitly rejected the Structuralist approach to phonology and favoured the mentalistic or cognitive view of Sapir. These topics are discussed further in English phonology#Controversial issues.


Correspondence between letters and phonemes

Phonemes are considered to be the basis for
alphabet An alphabet is a standardized set of basic written graphemes (called letters) that represent the phonemes of certain spoken languages. Not all writing systems represent language in this way; in a syllabary, each character represents a syll ...
ic writing systems. In such systems the written symbols (
grapheme In linguistics, a grapheme is the smallest functional unit of a writing system. The word ''grapheme'' is derived and the suffix ''-eme'' by analogy with ''phoneme'' and other names of emic units. The study of graphemes is called ''graphemics' ...
s) represent, in principle, the phonemes of the language being written. This is most obviously the case when the alphabet was invented with a particular language in mind; for example, the Latin alphabet was devised for Classical Latin, and therefore the Latin of that period enjoyed a near one-to-one correspondence between phonemes and graphemes in most cases, though the devisers of the alphabet chose not to represent the phonemic effect of vowel length. However, because changes in the spoken language are often not accompanied by changes in the established
orthography An orthography is a set of conventions for writing a language, including norms of spelling, hyphenation, capitalization, word breaks, emphasis, and punctuation. Most transnational languages in the modern period have a writing system, and mos ...
(as well as other reasons, including
dialect The term dialect (from Latin , , from the Ancient Greek word , 'discourse', from , 'through' and , 'I speak') can refer to either of two distinctly different types of Linguistics, linguistic phenomena: One usage refers to a variety (linguisti ...
differences, the effects of
morphophonology Morphophonology (also morphophonemics or morphonology) is the branch of linguistics that studies the interaction between morphological and phonological or phonetic processes. Its chief focus is the sound changes that take place in morphemes (mi ...
on orthography, and the use of foreign spellings for some
loanword A loanword (also loan word or loan-word) is a word at least partly assimilated from one language (the donor language) into another language. This is in contrast to cognates, which are words in two or more languages that are similar because th ...
s), the correspondence between spelling and pronunciation in a given language may be highly distorted; this is the case with English, for example. The correspondence between symbols and phonemes in alphabetic writing systems is not necessarily a
one-to-one correspondence In mathematics, a bijection, also known as a bijective function, one-to-one correspondence, or invertible function, is a function between the elements of two sets, where each element of one set is paired with exactly one element of the other s ...
. A phoneme might be represented by a combination of two or more letters ( digraph, trigraph, ), like in English or in
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ger ...
(both representing phonemes ). Also a single letter may represent two phonemes, as in English representing or . There may also exist spelling/pronunciation rules (such as those for the pronunciation of in
Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, an ethnic group or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance language *** Regional Ita ...
) that further complicate the correspondence of letters to phonemes, although they need not affect the ability to predict the pronunciation from the spelling and vice versa, provided the rules are known.


In sign languages

Sign language phonemes are bundles of articulation features. Stokoe was the first scholar to describe the phonemic system of
ASL American Sign Language (ASL) is a natural language that serves as the predominant sign language of Deaf communities in the United States of America and most of Anglophone Canada. ASL is a complete and organized visual language that is express ...
. He identified the bundles '' tab'' (elements of location, from Latin ''tabula''), '' dez'' (the handshape, from ''designator''), ''
sig Sig used as a name may refer to: * Sig (given name) *Sig, Algeria, a city on the banks of the Sig River *Sig Alert, an alert for traffic congestion in California, named after Loyd Sigmon *Sig River, a river of Algeria also known as Mekerra sig (l ...
'' (the motion, from ''signation''). Some researchers also discern '' ori'' (orientation), facial
expression Expression may refer to: Linguistics * Expression (linguistics), a word, phrase, or sentence * Fixed expression, a form of words with a specific meaning * Idiom, a type of fixed expression * Metaphorical expression, a particular word, phrase, o ...
or
mouthing In sign language, mouthing is the production of visual syllables with the mouth while signing. That is, signers sometimes say or mouth a word in a spoken language at the same time as producing the sign for it. Mouthing is one of the many ways in w ...
. Just as with spoken languages, when features are combined, they create phonemes. As in spoken languages, sign languages have minimal pairs which differ in only one phoneme. For instance, the ASL signs for
father
' and
mother
' differ minimally with respect to location while handshape and movement are identical; location is thus contrastive. Stokoe's terminology and notation system are no longer used by researchers to describe the phonemes of sign languages;
William Stokoe William C. Stokoe Jr. ( ; July 21, 1919 – April 4, 2000) was an American linguist and a long-time professor at Gallaudet University. His research on American Sign Language (ASL) revolutionized the understanding of ASL in the United States and s ...
's research, while still considered seminal, has been found not to characterize American Sign Language or other sign languages sufficiently. For instance, non-manual features are not included in Stokoe's classification. More sophisticated models of sign language phonology have since been proposed by Brentari, Sandler, and Van der Kooij.


Chereme

Cherology and chereme (from "hand") are synonyms of
phonology Phonology is the branch of linguistics that studies how languages or dialects systematically organize their sounds or, for sign languages, their constituent parts of signs. The term can also refer specifically to the sound or sign system of a ...
and phoneme previously used in the study of
sign language Sign languages (also known as signed languages) are languages that use the visual-manual modality to convey meaning, instead of spoken words. Sign languages are expressed through manual articulation in combination with non-manual markers. Sign l ...
s. A ''chereme'', as the basic unit of signed communication, is functionally and psychologically equivalent to the phonemes of oral languages, and has been replaced by that term in the academic literature. ''Cherology'', as the study of ''cheremes'' in language, is thus equivalent to phonology. The terms are not in use anymore. Instead, the terms ''phonology'' and ''phoneme'' (or ''distinctive feature'') are used to stress the linguistic similarities between signed and spoken languages. The terms were coined in 1960 by
William Stokoe William C. Stokoe Jr. ( ; July 21, 1919 – April 4, 2000) was an American linguist and a long-time professor at Gallaudet University. His research on American Sign Language (ASL) revolutionized the understanding of ASL in the United States and s ...
at
Gallaudet University Gallaudet University ( ) is a private federally chartered research university in Washington, D.C. for the education of the deaf and hard of hearing. It was founded in 1864 as a grammar school for both deaf and blind children. It was the first sc ...
to describe sign languages as true and full languages. Once a controversial idea, the position is now universally accepted in linguistics. Stokoe's terminology, however, has been largely abandoned.Seegmiller, 2006. "Stokoe, William (1919–2000)", in ''Encyclopedia of Language and Linguistics'', 2nd ed.


See also

*
Alphabetic principle According to the alphabetic principle, letters and combinations of letters are the symbols used to represent the speech sounds of a language based on systematic and predictable relationships between written letters, symbols, and spoken words. The ...
*
Alternation (linguistics) In linguistics, an alternation is the phenomenon of a morpheme exhibiting variation in its phonological realization. Each of the various realizations is called an alternant. The variation may be conditioned by the phonological, morphological, ...
*
Complementary distribution In linguistics, complementary distribution, as distinct from contrastive distribution and free variation, is the relationship between two different elements of the same kind in which one element is found in one set of environments and the other ele ...
*
Diaphoneme A diaphoneme is an abstract phonological unit that identifies a correspondence between related sounds of two or more varieties of a language or language cluster. For example, some English varieties contrast the vowel of ''late'' () with that of ...
*
Diphone In phonetics, a diphone is an adjacent pair of phones in an utterance. For example, in aɪfəʊn the diphones are a ɪ f ə ʊ n The term is usually used to refer to a recording of the transition between two phones. In the following d ...
*
Emic and etic In anthropology, folkloristics, and the social and behavioral sciences, emic () and etic () refer to two kinds of field research done and viewpoints obtained. The "emic" approach is an insider's perspective, which looks at the beliefs, values ...
*
Free variation In linguistics, free variation is the phenomenon of two (or more) sounds or forms appearing in the same environment without a change in meaning and without being considered incorrect by native speakers. Sociolinguists argue that describing such v ...
*
Initial-stress-derived noun Initial-stress derivation is a phonological process in English that moves stress to the first syllable of verbs when they are used as nouns or adjectives. (This is an example of a suprafix.) This process can be found in the case of several dozen ve ...
*
International Phonetic Alphabet The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic transcription, phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standa ...
*
Minimal pair In phonology, minimal pairs are pairs of words or phrases in a particular language, spoken or signed, that differ in only one phonological element, such as a phoneme, toneme or chroneme, and have distinct meanings. They are used to demonstrate th ...
*
Morphophonology Morphophonology (also morphophonemics or morphonology) is the branch of linguistics that studies the interaction between morphological and phonological or phonetic processes. Its chief focus is the sound changes that take place in morphemes (mi ...
*
Phone A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically and most efficiently the human voice, into ele ...
*
Phonemic orthography A phonemic orthography is an orthography (system for writing a language) in which the graphemes (written symbols) correspond to the phonemes (significant spoken sounds) of the language. Natural languages rarely have perfectly phonemic orthographi ...
*
Phonology Phonology is the branch of linguistics that studies how languages or dialects systematically organize their sounds or, for sign languages, their constituent parts of signs. The term can also refer specifically to the sound or sign system of a ...
*
Phonological change In historical linguistics, phonological change is any sound change that alters the distribution of phonemes in a language. In other words, a language develops a new system of oppositions among its phonemes. Old contrasts may disappear, new ones ...
*
Phonotactics Phonotactics (from Ancient Greek "voice, sound" and "having to do with arranging") is a branch of phonology that deals with restrictions in a language on the permissible combinations of phonemes. Phonotactics defines permissible syllable struc ...
*
Sphoṭa ( sa, स्फोट, ; "bursting, opening", "spurt") is an important concept in the Indian grammatical tradition of Vyakarana, relating to the problem of speech production, how the mind orders linguistic units into coherent discourse and meaning ...
*
Toneme Tone is the use of pitch in language to distinguish lexical or grammatical meaning – that is, to distinguish or to inflect words. All verbal languages use pitch to express emotional and other paralinguistic information and to convey emph ...
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Triphone In linguistics, a triphone is a sequence of three consecutive phonemes. Triphones are useful in models of natural language processing where they are used to establish the various contexts in which a phoneme can occur in a particular natural languag ...
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Viseme A viseme is any of several speech sounds that look the same, for example when lip reading (Fisher 1968). Visemes and phonemes do not share a one-to-one correspondence. Often several phonemes correspond to a single viseme, as several phonemes look ...


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Further reading

* * * * * * * * * * * * * (reprinted in Joos, M. Readings in Linguistics, 1957) * {{Authority control Learning to read Reading (process) Orthography Phonetics Phonology Linguistics terminology