| 基于DSP的电子耳蜗语音处理器的研制 |
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| 引用本文： | 沈滔,周耀华,刘召伟.基于DSP的电子耳蜗语音处理器的研制[J].复旦学报(自然科学版),2002,41(2):182-186,191. |
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| 作者姓名： | 沈滔 周耀华 刘召伟 |
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| 作者单位： | 复旦大学通信科学与工程系,上海,200433 |
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| 摘 要： | 电子耳蜗是一项正在迅速发展的聋人康复新技术，其关键是要研制出可靠、灵活、价格低廉的产品。首先介绍电子耳蜗的原理及其进展，然后介绍基于TMS320VC5402 DSP处理器的电子耳蜗语音处理器。实验证明：基于DSP的电子耳蜗系统可以按照患者的实际情况灵活选择各种语音处理方案，并能方便实现语音预处理、噪声抑制和对应各电极的频谱阈值调整，是一种比较好的系统结构。
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| 关 键 词： | DSP 电子耳蜗语音处理器 数字信号处理器 时－频分析 |
| 文章编号： | 0427-7104(2002)02-0182-05 |
The Development of Speech Processor in Cochlear Implant Based on DSP |
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| SHEN Tao,ZHOU Yao hua,LIU Zhao wei.The Development of Speech Processor in Cochlear Implant Based on DSP[J].Journal of Fudan University(Natural Science),2002,41(2):182-186,191. |
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| Authors: | SHEN Tao ZHOU Yao hua LIU Zhao wei |
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| Abstract: | Cochlear implant is used to restore hearing ability of deaf people. The purpose of the present work is to develop flexible product with high reliability and reasonable price. The principles of the cochlear implant and its recent progress are presented. Then, a speech processor used for cochlear implant is proposed, which is developed based on TI's TMS320VC5402. It provides the function of frequency shaping, noise supprression and adjustment of frequency distribution of every electrobe. By using this system, speech processing strategy and parameters of filter banks can be easily adjusted according to the requirement of individual patients. |
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| Keywords: | cochlear implant DSP speech processing time frequency analysis |
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