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

作　　者：顾丽萍[1] 

机构地区：[1]苏州工业职业技术学院,江苏苏州215000

出　　处：《湖南理工学院学报（自然科学版）》2009年第1期32-36,74,共6页Journal of Hunan Institute of Science and Technology(Natural Sciences)

摘　　要：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.

关 键 词：减谱法 傅里叶变换 语音增强 

分 类 号：TN92[电子电信—通信与信息系统]