采用累计贡献率的方法，微分方程组数值解方法，仿真效率很高的，FIR 底通和带通滤波器和IIR 底通和带通滤波器，基于互功率谱的时延估计，复化三点Gauss-lengend公式求pi，matlab开发工具箱中的支持向量机，解耦，恢复原信号。- The method of cumulative contribution rate Numerical solution of differential equations method, High simulation efficiency, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Based on the time delay estimation of power spectrum, Complex of three-point Gauss-lengend the Formula pi, matlab development toolbox support vector machine, Decoupling, restore the original signal.