A FIR digital low-pass filter based on MATLAB is designed and implemented for signal processing in signal plus noise signal acquisition system.The theory of designing FIR digital filter is introduced by window function method.It gives an example to introduce the steps of designing FIR digital filter.The correctness of the design is verified by simulation.FIR digit-al filter filtering process is shown.The understanding of FIR digital filter design methods and filter network structure is en-hanced.The correctness of the design is verified by simulation to filter the input signal plus noise signal.
关键词
FIR数字低通滤波器/窗函数/单位脉冲相应
Key words
FIR digital low-pass filter/window function/unit impulse problem
维普
万方数据