谱减法是语音信号处理中一种非常重要的方法，使用该方法的目的是降低语音信号中噪声所占比例，是语音识别中一个非常重要的环节。Matlab 软件是语音信号处理的常用软件，Labview 软件是一款功能强大的数据采集处理软件。本文介绍了如何将Labview和Matlab结合起来，完成谱减法语音信号的采集及语音信号的增强处理在Labview环境下的实现。

Spectral subtraction is a very important method in speech signal processing. The aim of this method is to reduce the proportion of noise in speech signals, which is a very important way in speech recognition. Matlab is a kind of common software for speech signal processing. Labview is a powerful data collecting and processing software. This paper describes how to combine Labview and Matlab to complete speech signal acquisition and enhancement based on spectral subtraction under Labview environment.