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date: 23 May 2019

Abstract and Keywords

This article addresses the nature of historical change, focusing on experimental work presenting the motivations and mechanisms for language change. The two models of phonetic variation explaining sound change include Lindblom's H&H theory and Ohala's phonetic listener-based model. A smaller category of sound change falls under the scenario that Ohala calls hypercorrection, whereby the listener performs an unnecessary, inappropriate correction of the signal, and ends up producing a new form. Hypercorrection often results in dissimilation. Gestural reassignment captures the listener's failure to identify correctly the source of a particular property of the signal, as in Ohala's model. Gestural misparsing can also explain cases involving the apparent insertion or deletion of a gesture. The most widely cited formulated model of phonologization is by Hyman. The process involves two steps that include phonetic variation leading to phonological variation (phonologization), and phonological variation leading to distinctive variation (phonemicization). The speech recognition involves a calculation of distance in phonetic space between an auditory stimulus and the stored exemplars, and the application of a classification rule to these distances. Exemplar-based speech production involves generation of an output based on mean phonetic properties of the exemplars of the target category.

Keywords: Lindblom's H&H theory, Ohala's phonetic listener-based model, hypercorrection, vowel shift, speech recognition, exemplar-based speech production

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