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Individual variability in boundary-induced modulation of consonants and tones in Thai
Alif Silpachai1, Jeremy Steffman2
1Centre for Language Studies, Radboud University, Nijmegen, The Netherlands.
Abstract:
Consonants and lexical tones following a prosodic boundary can be produced differently at a higher prosodic level compared to a lower level. It is unclear how much individual variability underlies such boundary-induced modulation, which has largely been reported aggregated across individuals. This study examined the voice onset times of three stops and the maximum fundamental frequency of three tones in Thai in a syllable immediately after an intonational phrase boundary compared to a word boundary. Group-level boundary-induced modulation shows substantial speaker variation with different patterns of modulation. Different speakers might value syntagmatic and/or paradigmatic contrast enhancement in differing degrees.
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