Filter

代码说明：

  matlab下filter程序，有脉冲响应法和双线性变换法生成filter，各参数有详细注释，有信号滤波前后的图形、频谱及相位对比。(Under filter matlab procedures, generate filter impulse response method and bilinear transformation method, various parameters are detailed notes, graphics, spectrum and phase contrast signal before and after filtering.)