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Wednesday, July 10 • 15:30 - 18:00

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It is well known that a noisy environment affects human perceptual ability. Simultaneously, the accuracy of production of spoken language also declines. Especially, when a person pronounces non-native consonant clusters, his/her pronunciation becomes less accurate. However, the mechanism of this phenomenon is not clear. In order to elucidate this problem, in this research first we studied in a quiet environment. We investigated the difference of articulatory movement between native and non-native consonant clusters. English has consonant clusters, but Japanese does not. Therefore, speakers were two native English speakers and two native Japanese speakers. Speech samples consisted of 4 words, "blat," "bnat," "plat," "pnat." In these words, /bl/ and /pl/ are English consonant clusters, but /bn/ and /pn/ are not. These four consonant clusters, /bl/, /pl/, /bn/, /pn/, do not exist in Japanese. We measured the movement of the tongue tip, the mandible and the lower lip using WAVE system (NDI corp.). There were remarkable differences in the mandible and the lower lip movement between native (/bl/, /pl/) and non-native (/bn/, /pn/) clusters in English speakers. Specifically, with the non-native consonant clusters the difference of the articulatory movement in the mandible and the lower lip of every utterance was quite large; however, in native consonant clusters, the difference was quite small. For Japanese speakers it was large for all consonant clusters. Therefore, it was revealed that the articulatory movement of the mandible and the lower lip in non-native consonant clusters was not stable in native English speakers, even though English has consonant clusters. We will carry out these experiments in noisy environments in future.

Wednesday July 10, 2019 15:30 - 18:00 EDT
St-Laurent 3, Board 12-A
  T09 Audiology… & comm. in noise, RS01 Psycholog & physiolog ac

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