说明：  正确率可以达到98％，有CDF三角函数曲线/三维曲线图，包括最小二乘法、SVM、神经网络、1_k近邻法,多抽样率信号处理，用于信号特征提取、信号消噪。
( Accuracy can reach 98 , There CDF trigonometric curve/3D graphs, Including the least squares method, the SVM, neural networks, 1 _k neighbor method, Multirate signal processing, For feature extraction, signal de-noising.)