为了提高在汽车噪声环境中语音识别系统的识别率,并达到降低系统成本的目的,在低成本定点DSP (TMS320VC5509A)芯片工业标准的基础上,使用两路无差输入信号进行噪声抵消,建立了一种基于孤立词,小词汇量,特定人识别的语音识别系统,实验表明,在类似汽车噪声环境中,该系统的识别率可满足实用要求,且成本较低.%In order to improve the recognition rate of the speech recognition system in the noise environment of the motor vehicle,and achieve the purpose of reducing the cost of the system,this paper used two input signals to implement adaptive noise cancellation,and designed a particular person effectively speech recognition system with single and few words on the basis of the industry standard of the low cost and fixed-point DSP chip,TMS320VC5509A.The experiments showed that the recognition rate of the system in similar noise environmentof the motor vehicle can achieve the practical requirements even with a lower cost.
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