MATLAB与窗函数法结合设计FIR数字滤波器的研究

RESEARCH ON DESIGN FIR DIGITAL FILTER USING MATLAB AND WINDOW FUNCTION METHOD

传统的数字滤波器设计方法繁琐且结果不直观,本文利用MATLAB具有强大的科学计算和图形显示这一优点,与窗函数法设计理论相结合共同设计FIR数字滤波器,不但使设计结果更加直观,而且提高了滤波器的设计精度,从而更好地达到预期效果。

Traditional design method of digital filter is complicated but getting not direct-vision output. This paper utilize MATLAB to solve the problem because of its ability of scientific compute and advantage of figure demonstration. On the base of analyzing window function method, this paper performed simulation calculations applying MATLAB and window function method to design digital filter. Observing the output of filter, the paper achieves the desired results with its high precision and velocity.