大学数值分析算法，有借鉴意义哦，用于信号特征提取、信号消噪，通过matlab代码，FIR 底通和带通滤波器和IIR 底通和带通滤波器，抑制载波型差分相位调制。- University of numerical analysis algorithms, There are reference Oh, For feature extraction, signal de-noising, By matlab code, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Suppressed carrier type differential phase modulation.