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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/12327

Title: Exploring auditory aging can exclusively explain Japanese adults′ age-related decrease in training effects of American English /r/-/l/
Authors: Kubo, Rieko
Akagi, Masato
Issue Date: 2013-06-02
Publisher: Acoustical Society of America
Magazine name: Proceedings of Meetings on Acoustics
Volume: 19
Start page: 060078
DOI: 10.1121/1.4800151
Abstract: Age-related decrease in training effect was shown by training of American English /r/-/l/ contrasts on Japanese speakers. This study examined whether the decrease can be explained exclusively by auditory aging, or other, compensatory cognitive processing should be taken into account. Japanese speakers aged 60's participated the experiment. Hearing threshold and spoken word perception test of participants' first language were used to estimate their auditory aging. The word perception test was composed of low-familiar, high-familiar words and mono syllables. The audiograms showed low threshold at high frequencies. The result of the perception test showed that low intelligibility for phonemes with high frequency or short duration, and confusion between contracted sounds and basic sounds. These were particular for low-familiar words and mono syllables. These results suggest that participants had auditory aging emerging as high frequency loss and time-/frequency-resolution degradation. Nonetheless, the acoustic features to distinguish /r/ and /l/ have long duration, low frequencies and wide frequency distance which are supposed to be unaffected by these auditory aging. The effect of word familiarity suggested compensatory cognitive processing involved. These suggest that age-related decrease cannot be explained exclusively by auditory aging, compensatory cognitive processing should be taken into account.
Rights: Copyright (C) 2013 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Proceedings of Meetings on Acoustics, 19, 2013, 060078 and may be found at http://dx.doi.org/10.1121/1.4800151
URI: http://hdl.handle.net/10119/12327
Material Type: publisher
Appears in Collections:b11-1. 会議発表論文・発表資料 (Conference Papers)

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