This article studied on the problem about how did the consonant cluster ‘*(k?l/kh?l/g?l)-’ in Proto-Chinese and Proto-Tibetan language change in each language though optimality theory. In conclusion, the changes of consonant cluster in Middle Chinese and Tibetan language have two different aspects. First, the numbers of onset are different in two languages, for there are different levels of constraints between ‘Linearity’ and ‘*Complex’. Second, because there are different hierarchies among ‘*onset[Cvcd’, ‘IdentI→O(ObsLaryngeal)’ and ‘*Cvcl&asp]onset’, parsing of laryngeal features are not same in two languages. The same point in two languages is the hierarchy among ‘Ident(F)’, ‘IdentI→O(LiqPlace)’ and ‘IdentI→O(ObsManner)’, therefore there was same situation on the change of phonetic value. However, different constraints influenced counterparts before and after segmental change, in other words there are ‘MAX’ in Middle Chinese and ‘ObsDEF’ in Tibetan language.


상고시대 중국어(Proto-Chinese), 중세 중국어(Middle Chinese), 원시 티베트어(Proto-Tibetan language), 티베트어(Tibetan language), 복자음(Consonant cluster), 최적성 이론(Optimality Theory)


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