求出laguerre滤波器的分子分母系数，绘出其幅频响应图并与FIR滤波器作比较。该程序为19阶Laguerre低通滤波器和22阶带通滤波器-obtained laguerre filter coefficient of molecular denominator, chart its amplitude frequency response plans with the FIR filter for comparison. The procedure for the 19-Laguerre l

fir低通滤波器，可以帮助我们很好的理解滤波器的含义，实现了汉明窗-fir low pass filter, can help us understand the meaning of a good filter to achieve a Hamming window