The paper introduces the characteristics of digital signal processing and MATLAB,designs finite impulse response(FIR)digital filter(DF) with the window function by an example,and explains the application in the digital signal processing of MATLAB.

• 介绍了数字信号处理及MATLAB的特点,以窗函数法设计有限冲激响应(FIR)数字滤波器(DF)为例,说明了MAT-LAB在数字信号处理中的应用。