基于MATLAB设计巴特沃斯低通滤波器

The Design of Butterworth Lowpass Filter Based on MATLAB

首先分析了巴特沃斯低通滤波器的特性 ,然后用MATLAB的信号处理工具箱提供的函数设计了巴特沃斯低通滤波器 ,使得巴特沃斯滤波器的设计变得更加简单、快捷、直观。

In this paper, the characteristics of Butterworth low-pass filter are first analysed, and then how to use the functions, which are provided by signal processing toolbox of MATLAB, to design Butterworth low-pass filter is proposed. The method makes the design of Butterworth filter simplier, quicklier and more intuitively.