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Effects of fundamental frequency contour on understanding Mandarin sentences in bimodal hearing simulations
1Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Xueyuan Road 1088#, Xili, Nanshan District, Shenzhen, China fchen@sustc.edu.cn.
Abstract:
Fundamental frequency (F0) contour carries important information for understanding a tonal language. The present work assessed the effects of F0 contour on understanding Mandarin sentences in bimodal hearing simulations, including three conditions of acoustic-only, electric-only, and combined stimulations. Test stimuli were synthesized Mandarin sentences, each word with a normal, flat, or randomly assigned lexical tone, and presented to normal-hearing Mandarin-speaking listeners to recognize. Experimental results showed that changing F0 contour significantly affected the perception of Mandarin sentences under all conditions of acoustic-only, electric-only, and combined stimulations. The combined-stimulation advantage was only observed for test stimuli with the normal F0 contour.
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