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	Simulated Phase-Locking Stimulation: An Improved Speech Processing Strategy for Cochlear Implants
	Chen, Jing ; Wu, Xihong ; Li, Liang ; Chi, Huisheng
	2009
关键词	Speech processing strategy Cochlear implant Phase information Chinese speech CHINESE SPEECH RECOGNITION PERCEPTION INFORMATION CUES
DOI	10.1159/000229302
英文摘要	The continuous interleaved sampling (CIS) speech-processing strategy has been widely used for cochlear implants to extract speech envelope information without preserving phase information. In this study, a novel simulated phase-locking stimulation (SPLS) strategy, which detects zero-crossing times of the narrow-band signal of each band, was developed to extract both phase and amplitude-envelope information from a bank of frequency bands of speech sounds. The advantage of the SPLS strategy over the CIS strategy was confirmed by the results of our psychophysical experiments, showing that normal-hearing Chinese listeners' performance in recognizing SPLS-processed Chinese speech was significantly better than their performance of recognizing CIS-processed Chinese speech under quiet, noise-masking, or speech-masking conditions. Thus, the results suggest that if the SPLS strategy is used to modulate the interval of electrical stimulation pulses in cochlear-implant devices according to extracted phase information, the speech-processing functions of cochlear implant devices would be improved for Chinese cochlear implant users. Copyright (C) 2009 S. Karger AG, Basel; Otorhinolaryngology; SCI(E); PubMed; 2; ARTICLE; 4; 221-227; 71
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/291453]
专题	心理与认知科学学院 信息科学技术学院
推荐引用方式 GB/T 7714	Chen, Jing,Wu, Xihong,Li, Liang,et al. Simulated Phase-Locking Stimulation: An Improved Speech Processing Strategy for Cochlear Implants[J],2009.
APA	Chen, Jing,Wu, Xihong,Li, Liang,&Chi, Huisheng.(2009).Simulated Phase-Locking Stimulation: An Improved Speech Processing Strategy for Cochlear Implants..
MLA	Chen, Jing,et al."Simulated Phase-Locking Stimulation: An Improved Speech Processing Strategy for Cochlear Implants".(2009).

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