中文说明： 详细画出了时域和频域的相关图，多抽样率信号处理，包括最小二乘法、SVM、神经网络、1_k近邻法,利用最小二乘法进行拟合多元非线性方程，FIR 底通和带通滤波器和IIR 底通和带通滤波器，是机器学习的例程。
English Description：
With painting out of the time domain and frequency domain correlation diagram, multi sample rate signal processing, including the least squares method, SVM, neural network, 1 K nearest neighbor method, using least squares fitting multivariate nonlinear equation, at the bottom of the fir pass and band-pass filter and IIR bottom pass and band-pass filter and machine learning routines.