基于MATLAB GUI的数字滤波器设计与实现

Design and realization of the digital filter based on MATLAB GUI

阐述了数字滤波器的设计方法,分析了运用MATLAB软件进行ⅡR数字滤波器的设计过程,并结合实例给出了一款基于MATLAB GUI的数字滤波器设计方案。该方案能在软件界面上提供方便的边沿频率给定途径,能按题意要求实现相应的数字低通、高通、带通、带阻滤波器设计。界面友好,具有开放性,便于学习《数字信号处理》的学生方便直观地理解理论知识,掌握滤波器特性。

This paper describes the way of designing a digital filter and analyses the process of Ⅱ R digital filter designing with MATLAB. Combined with an example, a project of designing filter based on MAT- LAB GUI is presented in this paper. The project can offer a convenient approach to affording edge frequency on software interface and realize the design of the filters with corresponding digital low pass, high pass, band pass or band stop. Its interface is chummy and open, and also it is more conveniently for students who are learning ＂digital signal processing ＂ to understand theoretical knowledge and get to know the characteristics of filter.