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说明：  一个MATLAB的应用程序，很方便的！使用时需要转换为M文件。(a MATLAB applications, a convenient! Use need to change for the M documents.)

Object tracking by comparing histograms

布莱克曼窗是一个比较适合复杂的窗，它的衰减很大，做成录波器容易满足指标(Blackman window is a more suitable for complex window, its large attenuation, made recorder easily satisfied index )

常微分方程的求解(自适应步长的龙格库塔法)(The solution of ordinary differential equations (adaptive step Runge-Kutta method))

将带噪声的音频文件中的噪声滤除掉，得到原始音频信号(The noisy audio file noise filtered out to obtain the original audio signal)

一篇关于四轴飞行器模糊PID控制的文章，对做四轴飞行的朋友有帮助。(An article about the fuzzy PID control of four axis aircraft articles, to help make friends flying four axis.)

自适应滤波，一种降噪滤波的好算法，被多篇论文证明能够有效预处理信号。(adaptive-filtering method)

声子晶体线缺陷的程序，自己编写的很好用，给需要做声子晶体方面的同行参考(Phononic crystal line defect in the program, write your own good, need to make a sound sub-crystal counterparts reference)

关于蒙特卡洛法进行计算面积的，根据随机投点所得到的频率反推概率来求得面积。很好用的一种思维方法(About the Monte Carlo method to calculate the area, according to the random frequency of investment points to get the probability to obtain the inverse area. A good way of thinking with)

说明：  matlab编写的FFT变换和滤波的程序(this is matlab code for fft transfering and filtering.)