二阶数字谐振器的频率特性和滤波器的幅频特性和相位特性和预畸变在双线性变换中的作用,Second-order digital resonator frequency filter characteristics and amplitude-frequency characteristics and phase characteristics and pre-distortion in the bilinear transform the role of

输入信号通过线性时不变系统，幅度响应和频率响应失真分析MATLAB仿真。-the input signal pass the LTI system,simulate the distortion of amplitude response and phase response.