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Phonetic training with acoustic cue manipulations: A comparison of methods for teaching English vertical bar r vertical bar-vertical bar l vertical bar to Japanese adults

Iverson, P; Hazan, V; Bannister, K; (2005) Phonetic training with acoustic cue manipulations: A comparison of methods for teaching English vertical bar r vertical bar-vertical bar l vertical bar to Japanese adults. J ACOUST SOC AM , 118 (5) 3267 - 3278. 10.1121/1.2062307.

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Abstract

Recent work [Iverson et al. (2003) Cognition, 87, B47-57] has suggested that Japanese adults have difficulty learning English /r/ and /l/ because they are overly sensitive to acoustic cues that are not reliable for /r/-/l/ categorization (e.g., F2 frequency). This study investigated whether cue weightings are altered by auditory training, and compared the effectiveness of different training techniques. Separate groups of subjects received High Variability Phonetic Training (natural words from multiple talkers), and 3 techniques in which the natural recordings were altered via signal processing (All Enhancement, with F3 contrast maximized and closure duration lengthened; Perceptual Fading, with F3 enhancement reduced during training; and Secondary Cue Variability, with variation in F2 and durations increased during training). The results demonstrated that all of the training techniques improved /r/-/l/ identification by Japanese listeners, but there were no differences between the techniques. Training also altered the use of secondary acoustic cues; listeners became biased to identify stimuli as English /l/ when the cues made them similar to the Japanese /r/ category, and reduced their use of secondary acoustic cues for stimuli that were dissimilar to Japanese /r/. The results suggest that both category assimilation and perceptual interference affect English /r/ and /l/ acquisition. (c) 2005 Acoustical Society of America.

Type: Article
Title: Phonetic training with acoustic cue manipulations: A comparison of methods for teaching English vertical bar r vertical bar-vertical bar l vertical bar to Japanese adults
DOI: 10.1121/1.2062307
Keywords: NONNATIVE SPEECH CONTRASTS, DISCRIMINATION, PERCEPTION, LISTENERS, LANGUAGE, ACQUISITION, IDENTIFICATION, CONSONANTS, TALKER
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Speech, Hearing and Phonetic Sciences
URI: http://discovery.ucl.ac.uk/id/eprint/10325
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