Relief计算分类权重，微分方程组数值解方法，实现了对10个数字音的识别，旋转机械二维全息谱计算，用于时频分析算法，用于信号特征提取、信号消噪。- Relief computing classification weight, Numerical solution of differential equations method, To achieve the recognition of 10 digital sound, Rotating machinery 2-d holographic