包括广义互相关函数GCC时延估计，旋转机械二维全息谱计算，一种流形学习算法（很好用），具有丰富的参数选项,通过matlab代码，基于chebyshev的水声信号分析，微分方程组数值解方法。- Including the generalized cross-correlation function GCC time delay estimation, Rotating machinery 2-d holographic spectrum calculation, A fluid manifold learning algorithm (good use), It has a wealth of parameter options, By matlab code, Based chebyshev underwater acoustic signal analysis, Numerical solution of differential equations method.