基于减谱法的信号处理研究——MATLAB软件辅助设计

The Study of Signal Processing Based on the Spectral Subtraction

描述了用减谱法进行语音增强的一种方法,利用计算机以及相应的MATLAB标准软件,分别对语音和噪音信号进行傅里叶变换,求得它们的频谱,相减得到的是去噪后语音的频谱,再进行傅里叶反变化,即可得到增强语言信号,从而有效地抑制了噪声.

This project intends to describe a way of enhancing speech sound through spectral subtraction, that is, by using the computer and the relevant standard software MATLAB, speech sound and noise signals are Fourier transformed to get their frequency spectrum, and after getting the difference of the subtraction, namely the frequency spectrum of the speech sound after removing noise, the frequency spectrum is inverse Fourier transformed. As a result, one can hear the enhanced speech sound after the suppression of noise.