Бір дыбыстың әртүрлі айтылу түрлері (Allophon)

Phone used to pronounce a single phoneme
the term for someone whose native language is not French or English, typically used in Canada

In phonology, an allophone ('/æ//l//ə//f//oʊ//n//audio=En us allophone. ogg/; from the Greek ἄλλος, , 'other' and φωνή, , 'voice, sound') is one of multiple possible spoken soundsor phonesused to pronounce a single phoneme in a particular language. For example, in English, the voiceless plosive (as in stop ) and the aspirated form (as in top ) are allophones for the phoneme , while these two are considered to be different phonemes in some languages such as Central Thai. Similarly, in Spanish, (as in dolor doˈloɾ) and (as in nada ˈnaða) are allophones for the phoneme , while these two are considered to be different phonemes in English (as in the difference between dare and there). The specific allophone selected in a given situation is often predictable from the phonetic context, with such allophones being called positional variants, but some allophones occur in free variation. Replacing a sound by another allophone of the same phoneme usually does not change the meaning of a word, but the result may sound non native or even unintelligible. Native speakers of a given language perceive one phoneme in the language as a single distinctive sound and are "both unaware of and even shocked by" the allophone variations that are used to pronounce single phonemes.

The term "allophone" was coined by Benjamin Lee Whorf circa 1929. In doing so, he is thought to have placed a cornerstone in consolidating early phoneme theory. The term was popularized by George L. Trager and Bernard Bloch in a 1941 paper on English phonology and went on to become part of standard usage within the American structuralist tradition.

Whenever a user's speech is vocalized for a given phoneme, it is slightly different from other utterances, even for the same speaker. That has led to some debate over how real and how universal phonemes really are (see phoneme for details). Only some of the variation is significant, by being detectable or perceivable, to speakers. There are two types of allophones, based on whether a phoneme must be pronounced using a specific allophone in a specific situation or whether the speaker has the unconscious freedom to choose the allophone that is used. If a specific allophone from a set of allophones that correspond to a phoneme must be selected in a given context, and using a different allophone for a phoneme would cause confusion or make the speaker sound non native, the allophones are said to be complementary. The allophones then complement each other, and one of them is not used in a situation in which the usage of another is standard. For complementary allophones, each allophone is used in a specific phonetic context and may be involved in a phonological process. In other cases, the speaker can freely select from free variant allophones on personal habit or preference, but free variant allophones are still selected in the specific context, not the other way around. Another example of an allophone is assimilation, in which a phoneme is to sound more like another phoneme. One example of assimilation is consonant voicing and devoicing, in which voiceless consonants are voiced before and after voiced consonants, and voiced consonants are devoiced before and after voiceless consonants.

An allotone is a tonic allophone, such as the neutral tone in Standard Mandarin.

Since phonemes are abstractions of speech sounds, not the sounds themselves, they have no direct phonetic transcription. When they are realized without much allophonic variation, a simple broad transcription is used. However, when there are complementary allophones of a phoneme, the allophony becomes significant and things then become more complicated. Often, if only one of the allophones is simple to transcribe, in the sense of not requiring diacritics, that representation is chosen for the phoneme. However, there may be several such allophones, or the linguist may prefer greater precision than that allows. In such cases, a common convention is to use the "elsewhere condition" to decide the allophone that stands for the phoneme. The "elsewhere" allophone is the one that remains once the conditions for the others are described by phonological rules. For example, English has both oral and nasal allophones of its vowels. The pattern is that vowels are nasal only before a nasal consonant in the same syllable; elsewhere, they are oral. Therefore, by the "elsewhere" convention, the oral allophones are considered basic, and nasal vowels in English are considered to be allophones of oral phonemes. In other cases, an allophone may be chosen to represent its phoneme because it is more common in the languages of the world than the other allophones, because it reflects the historical origin of the phoneme, or because it gives a more balanced look to a chart of the phonemic inventory. An alternative, which is commonly used for archiphonemes, is to use a capital letter, such as /N/ for [m], [n], [ŋ]. In rare cases, a linguist may represent phonemes with abstract symbols, such as dingbats, to avoid privileging any particular allophone.