Vowel normalization for accent: an investigation of best exemplar locations in northern and southern British English sentences |
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Authors: | Evans Bronwen G Iverson Paul |
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Affiliation: | Department of Phonetics and Linguistics, University College London, 4 Stephenson Way, London NW1 2HE, United Kingdom. bron@phon.ucl.ac.uk |
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Abstract: | Two experiments investigated whether listeners change their vowel categorization decisions to adjust to different accents of British English. Listeners from different regions of England gave goodness ratings on synthesized vowels embedded in natural carrier sentences that were spoken with either a northern or southern English accent. A computer minimization algorithm adjusted F1, F2, F3, and duration on successive trials according to listeners' goodness ratings, until the best exemplar of each vowel was found. The results demonstrated that most listeners adjusted their vowel categorization decisions based on the accent of the carrier sentence. The patterns of perceptual normalization were affected by individual differences in language background (e.g., whether the individuals grew up in the north or south of England), and were linked to the changes in production that speakers typically make due to sociolinguistic factors when living in multidialectal environments. |
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