pwelch

calculate moy of the signal

用三种方法解决城市距离问题（或背包问题）。三种方法分别为：遗传算法，蚁群算法，粒子算法。(Three ways to solve the problem of urban distance (or knapsack problem). Three methods are: genetic algorithm, ant colony algorithm, particle algorithm.)

power rectifire model for symetrical systems

RLE=Run Lenght Coding for image.

自适应编码调制。cvsd编码实现，译码实现(Adaptive modulation and coding. cvsd Coding, decoding achieve)

该程序主要用于损伤梁的模态计算，包括特征多项式和计算的详细过程。(The program is mainly used for the modal calculation of the damaged beams, including the characteristic polynomial and computing process.)

antenna design using matlab patch antenna.

只有画笔和画刷的练习，用户可以根据自己的需要修改相关的代码(Only the practice pen and brush, the user can modify the code to suit your needs)

基于小波变换的信号降噪，可以用来进行数据处理后的小波降噪(Substitution Small - wave conversion signal damping, available For further use Number processing Opinion Small wave noise)

matlab数值分析程序，提供基本的数值分析算法(numerical analysis matlab program to provide basic numerical analysis algorithms)