SystemIdentifycationandMATLAB

UWB，超宽带信号分析必用的子函数，第15部分！(UWB, ultra-wideband signal analysis will be used for Functions, Part 15!)

短时傅里叶变换可以用差分模式来实现，对书上的运算式做了稍许的改变。改变-计算差分序列的第一列数据时用的是第一列的元素减去当前行的最后一列元素。原算法中采用的是第一列元素减去下一行第二列元素。原算法加窗之后结果比较好，不加窗时结果误差很大，而改变之后的算法不加窗效果依然很好。(Short time Fourier transform can be used to achieve the differential mode of expression on the book made a slight change. Change- calculating the difference sequence of the data with the first column is the first column of the matrix by subtracting the current element in the last column of row. Is used in the original algorithm subtracts the elements of the first column of the next row and the second column elements. After the results of the original algorithm windowed better, when the results window without great error, and after changing algorithms no window effect is still very good.)

一阶导数的常用差分逼近 求解df的差分逼近 flag标记使用的差分算法 算法来自周超红的《一阶导数的差分逼近汇总》 可按照里边的算法构造更高阶的差分逼近(First derivative of the common difference approximation approach for solving differential df flag tag algorithm using the difference method from the week of super-red " first derivative of the difference approximation of summary" can be constructed in accordance with the algorithms inside the differential approximation of higher order)

平面波在介质中的传播，边界条件位pml。平面波在介质中的传播，边界条件位upml(Plane wave propagation in the medium, the boundary condition bit pml)

最小二乘支持向量回归模型 直接输入训练集和测试样本即可(Least squares support vector regression model direct input training set and test samples )

心音分析和心音文件,包含19个心音和分析程序(Analysis of heart sounds and sound files)

MATLAB常用函数整理，希望能对MATLAB初学者有所帮助(MATLAB functions used order, hoping to be helpful to MATLAB for beginners)

局部均值分解算法，适用于从事机械信号处理研究人员，对LMD方法的初步认识(Local mean decomposition algorithms for signal processing researchers in mechanical preliminary understanding of the LMD method)

calculate gauss into two vectors

《精通Matlab最优化计算》的随书代码(Proficient in Matlab optimization)