FIR 底通和带通滤波器和IIR 底通和带通滤波器，插值与拟合，解方程，数据分析，这是一个好用的频偏估计算法的matlab仿真程序。- Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Interpolation and fitting, solution of equations, data analysis, This is a useful frequency estimation