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基于窗函数法的FIR数字滤波器设计与实现，程序比较简单，易懂。(FIR digital filter based on window function.)

这是一个图论算法的程序，可以用于图论中寻找最短路径的问题。里面有具体说明。(This program is a graph theory algorithm can be used to find the shortest path problem in graph theory. There are specific instructions.)

Splice out the voiced plosive “b” in theword “be” and synthesize aword with an increase in the voice onset time of the “b.” What is the perceptual effect? Is it possible to transform the voiced plosive “b” to the unvoiced plosive “p” with this change in the voiced onset time? Consider attributes such as vocal cord vibration and aspiration. (In splicing, display the waveform and spectrogram of the word “be” and use the MATLAB function ginput.m.) Optional: If your transformed sound does not sound like a “p” then, again considering vocal cord vibration and aspiration, make a more accurate transformation.

code NRZ nodeur NRZ sous matlab

有限元方法求解laplace 方程(matlab),可以用混合单元，混合边界条件(sloving Laplace eauations with finite element methods. )

求图像的峰值信噪比PSNR，下载可以直接使用，希望能够帮助需要的同学(The peak signal to noise ratio of PSNR for the image.Download can be used directly, hope to help students in need.)

说明：  观察数据长度N的变化对DTFT分辨率的影响 这几个程序是老师写的 对于理解DTFT有很大帮助(Effect of observation data length N on DTFT resolution These programs are written by the teacher and are very helpful for understanding DTFT.)

这是自适应均衡器的Matlab仿真实现的代码，能实现自适应均衡器的功能(matlab code)

说明：  随机共振降噪，用于提取强噪音下的微弱信号(Stochastic resonance noise reduction for weak signal extraction under strong noise)

用Goldstein法求解一维函数的极值 (By Goldstein method for solving one-dimensional function of the extreme)