MATLABchengxujiekou

去噪后的性能指标计算，其中包含信噪比、均方误差以及平滑度指标。(After denoising performance index calculation, including signal-to-noise ratio, the mean square error (mse) and smoothness index. )

有限元求解结构固有频率和振型、显示（中心差分法，Newmark法）、隐式法、非线性法程序(middle difference/Newmark/nonlinear)

matlab编写的聚类算法代码，包含常用的各种聚类方法，可以作为聚类的程序包，有很好的使用和参考价值(matlab for clusterings)

阵列信号处理的波达角方向估计，用于八单元线阵，对多个接受信号的来波方向进行估计(Array signal processing direction of arrival angle estimation, for the eight-cell linear array, to receive signals on a number of DOA estimation)

emd 代码程序 音频信号的采集和分解，用来做经验模态分解实验。(emd-code program audio signal acquisition and decomposition, used as empirical mode decomposition experiment.)

说明：  该代码可以仿真直接扩频系统不同正弦幅度下误码率的的大小(Simulation of bit error rate of direct spread spectrum system)

说明：  小球碰撞动画，实现小球与大球在碗中碰撞的动画演示(Ball collision animations to achieve a small ball and big ball in the bowl animation of the collision)

generate simple random fractals recursively

the program for histogram in image processing

steepsest optimization method