传统的人工耳蜗语音处理器采用ASIC设计,投入成本高,可移植性差,设计了一种基于TMS320VC5509A的人工耳蜗语音处理器.该处理器采用双走克风接受语音信号,实现了语音信号的自适应噪声消除和CIS(Continuous Interleaved Sampling)方案.同一段语音由DSP采样处理得到的刺激脉冲与MATLAB采样处理的结果基本相同.实验结果表明,基于DSP的人工耳蜗语音处理器能实现语音信号中噪声的消除并得到良好的刺激脉冲.%The traditional speech signal processor for cochlear implants is designed by ASIC. It is high cost and poor portability. This article describes the design of speech processor for cochlear implants based on TMS320VC5509A. The processor adopts two microphones to acquire speech signal. And it implements self-adaptive noise reduction of the speech signal and the CIS algorithm. The stimulating pulse obtained by DSP is basically the same with it obtained by MATLB. The experimental results show that the speech signal processor for cochlear implant based on DSP can implement noise elimination of speech signal and obtain good stimulating pulse.
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