基于MATLAB的音频信号处理研究

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摘要：在通信过程中，语音信号在信道中经常会被噪声干扰，从而导致接收端的误码率增加。常见的干扰噪声有高斯白噪声和单频噪声等，设计一款能将干扰噪声滤除的滤波器就成了解决此类问题的方法，文章立足于常用的巴特沃斯滤波器和切比雪夫滤波器，实现对被噪声干扰的信号的滤波。

关键词：高斯白噪声；巴特沃斯滤波器；切比雪夫滤波器

doi：10.3969/J.ISSN.1672-7274.2023.02.015

中图分类号：TN 713，TN 972               文献标示码：A               文章编码：1672-7274（2023）02-00-05

Research on Audio Signal Processing Based on MATLAB

YU Zhangcheng， SUN Mengjie

（School of Electronic and Information Engineering， Nanjing University of Information Science and Technology， Nanjing 210000， China）

Abstract： During communication， voice signals are often disturbed by noise in the channel， resulting in an increase in the bit error rate at the receiving end. Common noise interference is Gaussian white noise and single-frequency noise， etc.， and designing a filter that can filter out interference noise is a solution to such problems. This paper is based on the commonly used Butterworth filter and Chebyshev filter to implement the filtering of signals disturbed by noise.

Key words： gaussian white noise; butterworth filter; chebyshev filter

0  引言

音频信号处理，又称音讯处理等，主要用来调整音频信号的振幅、频率、波形等。（剩余3119字）