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In spoken language, a phoneme is a basic, theoretical unit of sound that can distinguish words (i.e. changing one phoneme in a word can produce another word). A phoneme may well represent categorically several phonetically similar or phonologically related sounds (the relationship may not be so phonetically obvious, which is one of the problems with this conceptual scheme).Two words that are differentiated by one phoneme, such as "cat" and "rat", are known as a minimal pair.
The exact number of phonemes in English depends on the speaker and the method of determining phoneme vs. allophone, but estimates typically range from 40 to 45, which is above average across all languages. Pirahă has only 10, while !Xóő has 141.
Depending on the language and the alphabet used, a phoneme may be written consistently with one letter; however, there are many exceptions to this rule — see Writing systems below.
The common notation used in linguistics employs slashes (/ /) as quotes around the symbol that stands for the phoneme. For example, the phoneme for the initial consonant sound in the word "phoneme" would be written as /f/. In other words, the graphemes are , but this digraph represents one sound /f/. Allophones, real speech variants of a phoneme, are often denoted in linguistics by the use of diacritical or other marks added to the phoneme symbols and then placed in square brackets [ ] to differentiate them from the phoneme in slant brackets / /. The conventions of orthography are then kept separate from both phonemes and allophones by the use of the markers < > to enclose the spelling.
The symbols of the International Phonetic Alphabet (IPA) and extended sets adapted to a particular language are often used by linguists to write phonemes, with the principle being one symbol equals one categorical sound. Due to problems displaying some symbols in the early days of the Internet, systems such as X-SAMPA and Kirshenbaum were developed to represent IPA symbols in plain text. As of today (2004), any modern web browser can display IPA (as long as the operating systemIn computing, an operating system OS is the system software responsible for the direct control and management of hardware and basic system operations, as well as running application software such as word processing programs and web browsers. In general, t provides the appropriate fonts), and we use this system in this article.
Phonology, or more specifically, phonemics, is the study of the system of phonemes of a language, although some conceptualize phonology as encompassing far more than sound segments. Thus phonology can be used as a more general term subsuming phonemics.
Examples of phonemes in the English language would include sounds from the set of English consonants, like /p/ and /b/. These two are most often written consistently with one letter for each sound. However, phonemes might not be so apparent in written English, such as when they are typically represented with combined letters, called digraphsA digraph or bigraph is a pair of letters used to write one sound. This is often, but not necessarily, a sound (or more precisely a phoneme) which cannot be expressed using a single letter in the alphabet used for writing. Sometimes, when digraphs do not, like (pronounced /ʃ/) or (pronounced /tʃ/).
What may be an allophone (a sound variant belonging to the same phoneme category) in one language may be a phoneme itself in another language. In English, for example, /p/ has aspirated and non-aspirated allophones, e.g. aspirated in /pIn/, but non-aspirated in /spIn/. However, in some languages (e.g., Ancient Greek), aspirated /ph/ was a phoneme distinct from both unaspirated /p/ and /b/. As another example, there is no distinction between [r] and [l] in JapaneseThe Japanese language is a spoken and written language used mainly in Japan. The Japanese name for the language is Nihongo . History and classification Historical linguists do not all agree about the origin of the Japanese language; there are several comp, there is only one /r/ phoneme in Japanese, although the Japanese /r/ has allophones that make it sound more like an /l/ or /d/ to English speakers. The sounds /z/ and /s/ are distinct phonemes in English, but allophones in SpanishThis article is about the international language known as Spanish. For other languages spoken in Spain see Languages of Spain Spanish is an Iberian Romance language, and the third or fourth most spoken language in the world. It is spoken as a first langua. /n/ (as in n>) and /n/ (as in ng>) are phonemes in English, but allophones in ItalianItalian is a Romance language spoken by about 70 million people, most of whom live in Italy. Standard Italian is based on Tuscan dialects and is somewhat intermediate between the languages of Southern Italy and the Gallo-Romance languages of the North. and SpanishThis article is about the international language known as Spanish. For other languages spoken in Spain see Languages of Spain Spanish is an Iberian Romance language, and the third or fourth most spoken language in the world. It is spoken as a first langua.
The phoneme is a structuralist abstraction that was later adapted to and formally psychologized in generative linguistics (after Chomsky and Halle ). Rather than a basic mental unit of language, however, it may well be a perceptual artifact of alphabetic literacy (see the terms Phonemic awareness and Phonological awareness ). If not that, it may be an epiphenomenal aspect to listening removed from face-to-face encounters, that is, text-like listening. Cf. Phone and Feature.
Some languages make use of pitch for the precise same purpose. In this case, the tones used are called tonemes. The equivalents of phonemes in sign languages are called chiremes.
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