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( Vowel reduction)
Vowel reduction is the term in phonetics that refers to various changes in the acoustic quality of vowels, which are related to changes in stress, sonority, duration, loudness, articulation, or position in the word (e.g. for Creek language[1]), and which are perceived as "weakening". In phonology, vowel reduction refers to a reduction of the number of distinct vowels, rather than their quality, either over time or when comparing related dialects. In some cases these two concepts may be related. For example, when vowels are phonetically reduced in English, there is also a reduction in the number of vowel contrasts. In other cases, however, phonemic reduction is due to historical vowel mergers (such as the merger of the a vowels in Mary, merry, marry in much of the United States) and has nothing to do with "weakening". Phonetic reduction most often involves a centralization of the vowel, that is, a reduction in the amount of movement of the tongue in pronouncing the vowel, as with the characteristic change of many unstressed vowels at the ends of English words to something approaching schwa. Such vowel reduction is one of the sources of distinction between a spoken language and its written counterpart. Vernacular and formal speech often have different levels of vowel reduction, and so the term "vowel reduction" is also applied to differences in a language variety with respect to, e.g., the language standard.
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Vowel reduction Subcategories
Vowel reduction Articles
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