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在对自适应语音抗噪技术实时实现的可行性分析的基础上 ,提出了实时处理所需的基于TMS32 0 C32 (DSP)的硬件平台 ,采用两块 TL C32 0 44 CN(A/ D,D/ A转换器 )做成了与 TMS32 0 C32的接口板 ,实现了两路无相差信号的采集 ,形成了语音处理工作站样机。通过对几种自适应算法的分析比较 ,最后选择恰当的算法和滤波器结构实现了语音抗噪的实时处理 ,对信噪比的改善达 12 d B.
Based on the feasibility of real-time implementation of adaptive speech anti-noise technology, a hardware platform based on TMS32 0 C32 (DSP) for real-time processing is proposed. Two TL C32 0 44 CN (A / D, D / A converter) made with the TMS32 0 C32 interface board, to achieve two no-phase signal acquisition, the formation of a speech processing workstation prototype. Through the analysis and comparison of several adaptive algorithms, the final selection of the appropriate algorithm and filter structure to achieve real-time voice anti-noise processing, the improvement of signal to noise ratio up to 12d B.