基于MATLAB的语音增强系统的设计

语音增强是信号处理领域中的一个重要的组成部分。在许多语音处理的应用中,例如移动通信,语音识别和助听器,语音信号的处理不得不在具有噪声的环境下进行。在过去的几十年里,人们提出了许多方法去消除噪声和减少语音失真,例如谱减法,基于小波的方法,隐式马尔科夫模型法和信号子空间法等。小波分析由于能同时在时域和频域中对信号进行分析,所以它能有效地实现对信号的去噪。介绍了一种语音增强系统的设计方法,采用Least Mean Square（LMS）算法和小波变换相结合的方法对带噪语音进行去噪,并在MATLAB的Simulink环境下建立了该系统的模型。通过对该模型的仿真表明：该方法去噪效果明显,为该系统在硬件上的实现打下了理论基础。

Design of Speech Enhancement System Based on MATLAB

Speech enhancement is an important component in signal processing.In such speech processing applications as mobile communications,speech recognition and hearing aids,speech has to be processed in the presence of background noise.In the past decades,various approaches to removing the noises and reducing the speech distortion have been proposed,such as spectral subtraction,wavelet-based method,hidden Markov modeling and signal subspace methods.Wavelet analysis could signal both at time domain and at frequency...