基于Matlab的FIR数字滤波器的设计

Design of FIR digital filter based on Matlab

介绍了应用Matlab语言设计FIR数字滤波器时采用的两种方法直接程序设计法和使用FDA-tool界面的设计法,同时介绍了FIR数字滤波器几种设计方法的函数调用格式;通过实例,给出了程序设计法和使用信号处理工具箱中的FDAtool界面进行设计的详细步骤,并在Matlab的Simulink环境下,对所设计的滤波器进行了仿真。

Two methods for designing the FIR digital filter based on Matlab are introduced here—— direct programming and the one using FDAtool interface. The forms of the function called from Matlab are demonstrated. The detailed steps for both the program method and the one with FDAtool interface in signal processing tool box, with an example, are given also. The digital filter is simulated under Simulink/Matlab.