主要是基于mtlab的程序，添加噪声处理，有CDF三角函数曲线/三维曲线图，从先验概率中采样，计算权重，FIR 底通和带通滤波器和IIR 底通和带通滤波器，是信号处理的基础。- Mainly based on the mtlab procedures, Add noise processing, There CDF trigonometric curve/3D graphs, Sampling　a priori probability, calculate the weight, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Is the basis of the signal processing.