MathematicsignalprocingandMATLABimplementation

Its about cryptography example. useful for chatting with some sort of security

mfcc coefficient means mel frequency cepstral coefficient

计算社团分区模块度函数，用于复杂的网络分区(Modularity Maximization community detection)

数值分析实验报告，文档中附有源码，可供学习数值分析的学生借鉴学习。(Students learn from numerical analysis lab reports, document with source code, available for study and numerical analysis)

说明：  Basic of enchancement

该程序介绍了有关八叉树编码的基本编程知识，对于初级学者易懂易学。(This program introduces the octree encoding basic programming knowledge, which ishelpful for junior scholars to understand.)

通过B-样条曲线将仅由三维空间中若干点构成的折线轨迹平滑成曲线轨迹，并可视化。可用于机械臂的运动控制规划。(Through the B- spline curve, the curve of the broken line formed by several points in the 3D space is smooth, and can be visualized. Motion control planning for a robot arm.)

基于Matlab／simulink的交-交变频器仿真研究(Based on Matlab/simulink delivery- AC Inverter Simulation)

第一个是标准差，用于算数学模型均值，评价模型的平均量 第二个熵，用于评价信息量的大小，熵越大信息量越大。 第三个用于pcnn模型,评价是否接近理论模型,残差越小，就越接近理论模型(The first is the standard deviation, the mathematical model is used to calculate the mean, the average amount of uation model. The second entropy, to uate the size of the amount of information, the greater the entropy the greater the amount of information. The third for PCNN model, uation is close to the theoretical model, residual error is smaller, the more close to the theoretical model)

求一个给的的信号输入的平均频率的matlab程序(to find average frequency of a signal)