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此程序由matlab实现,用于对语音信号的功率谱密度进行估计.希望能有所帮助.(this procedure from Matlab realized, for the speech signal power spectral density estimation. hope to be helpful.)

本代码前部分为空间平滑算法代码，后半部分为时间平滑算法。(Spatial Smoothing，Time Smoothing)

瑞利衰落信道（Rayleigh fading channel）是一种无线电信号传播环境的统计模型。这种模型假设信号通过无线信道之后，其信号幅度是随机的，即“衰落”，并且其包络服从瑞利分布。(Rayleigh fading channel, Rayleigh fading channel) is a statistical model of radio signal propagation environment. This model assumes that the signal through a wireless channel, its signal amplitude is random, or "decline", and its envelope obey Rayleigh distribution. )

提取图像sift特征，并且showkey函数在图像上直观的显示出来(Sift extracted image features, and showkey function in the image displayed on the intuitive)

说明：  有频带方差和谱熵法。自己实现加窗分帧。里面设计傅里叶变换还有矩阵的运算。(speech endpoint detection. frequence_diff and pushang.)

说明：  通过大主应力和小主应力求解摩擦角和粘聚力(The friction angle and cohesion are solved by large principal stress and small principal stress)

网络流 最大流的matlab算法，包含多个文件(The network flow maximum flow Matlab algorithm contains multiple files)

MATLAB下，自动屏目截取函数。需要先选择编译器,在MATLAB窗口中输入mex -setup (MATLAB, the automatic screen mesh function interception. Need to select the compiler in the MATLAB window, type mex-setup)

西门子机械手模型程序，适合做课程设计题目。(Siemens manipulator model program, suitable for curriculum design topics.)

用黄金分割法来求解函数的极小点，不用求函数的导数，只需进行迭代即可,非精确线搜索技术用于解决极值区间(Golden section method to solve the minimum point of the function, do not seek the derivative of a function, simply iteration can be inexact line search techniques for solving extremal interval)