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A filter is a system which modifies some special frequencies reletive to the others. As a result it is applicable in some applications when it is necessary to have different gains & phase shifts at different frequencies to perform specific filtering tasks. For example in an audio file which is corrupted by noise it is convinient to use a filter to cancel those frequencies which are affected by noise and consequently having a better sound quality. During this MATLAB experiment we are trying to cancel the noise frequencies out of the original signal frequencies to get the original signal. Due to do this task, different types of filters such as FIR and IIR filters are used. In FIR filters, we use two type of common windows such as fixed window like Hanning and adjustable window like Kaiser. In IIR filters four different types of filter such as Butterworth, Chebyshev I, Chebyshev II, Elliptic are used.

LSB Audio Algorithm.. Audio Stegnography code

stanford大学vgg组著名的多视几何matlab工具箱vgg，包含特征点匹配、几何校正等(stanford university vgg group famous multi-view geometry vgg matlab toolbox, including a feature point matching, geometric correction, etc.)

说明：  为启发式搜索策略的特征选择算法，成为序列前向选择算法，又称为集合增加法，相比于其他特征选择算法运算量较小。(The feature selection algorithm, which is a heuristic search strategy, becomes a sequence forward selection algorithm, also known as set addition algorithm, which has less computation than other feature selection algorithms.)

信息论的实验，一个可以直接运行的程序，相信对您会有帮助(xinxiluj)

搜索图像的重心 用matlab编的 可以参考参考(The focus of the search images for use in matlab)

应用matlab语言编写，可用于一维信号去噪，去噪效果较好。(Application matlab language, can be used for one-dimensional signal de-noising, de-noising better.)

this is the simulation of induction motor

语音信号去噪处理，软阈值、硬阈值、折中阈值，包含语音文件，MATLAB2014a完美运行(speech denoising)

matlab实现匈牙利算法二分图最大匹配的程序(Matlab Hungarian algorithm to achieve the maximum matching problem.)