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A phonological rule is a formal way of expressing a systematic phonological or morphophonological process in linguistics.Phonological rules are commonly used in generative phonology as a notation to capture sound-related operations and computations the human brain performs when producing or comprehending spoken language.
For example, in English, the "p" sound in pot is aspirated (pronounced [pʰ]) while that in spot is not aspirated (pronounced [p]). However, English speakers intuitively treat both sounds as variations (allophones, which cannot give origin to minimal pairs) of the same phonological category, that is of the phoneme /p/.
The following table shows the 24 consonant phonemes found in most dialects of English, plus /x/, whose distribution is more limited. Fortis consonants are always voiceless, aspirated in syllable onset (except in clusters beginning with /s/ or /ʃ/), and sometimes also glottalized to an extent in syllable coda (most likely to occur with /t/, see T-glottalization), while lenis consonants are ...
Examples include secondary articulation; onsets, releases, aspiration and other transitions; shades of sound; light epenthetic sounds and incompletely articulated sounds. Morphophonemically, superscripts may be used for assimilation, e.g. aʷ for the effect of labialization on a vowel /a/ , which may be realized as phonemic /o/ . [ 98 ]
An example of a morphophonological alternation in English is provided by the plural morpheme, written as "-s" or "-es". Its pronunciation varies among [s], [z], and [ɪz], as in cats, dogs, and horses respectively. A purely phonological analysis would most likely assign to these three endings the phonemic representations /s/, /z/, /ɪz/.
In Proto-Italic, for example, intervocalic */s/ became *[z]. It was a phonetic change, merely a mild and superficial complication in the phonological system, but when *[z] merged with */r/, the effect on the phonological system was greater. (The example will be discussed below, under conditioned merger.)
For example, "matches" [kəbrit] is sometimes pronounced as [kərbit], [mogzit] "nanny" is sometimes pronounced as [mozgit]. The word "Monday" is [säɲo], which is the base for "Tuesday" [maksäɲo], which is often metathesized as [maskäɲo]. All of these examples show a pair of consonants reversed so that the stop begins the next syllable.
In the field of linguistics, specifically in syntax, phonetic form (PF), also known as phonological form or the articulatory-perceptual (A-P) system, is a certain level of mental representation of a linguistic expression, derived from surface structure, and related to Logical Form. Phonetic form is the level of representation wherein ...