gg_g

一个非常简单的利用转移矩阵法求解薛定谔方程的matlab程序(A very simple transfer matrix method for Schrodinger equation solution)

用matlab对一张图片进行DFT变换，DCT变换,比较保留20个DCT变换系数重构的图象与原始图像的差别.(Using matlab on a picture to DFT transform, DCT transform, compared to 20 DCT transform coefficients to retain the image reconstruction of the difference between the original image.)

用FFT计算信号的功率谱密度时，需要先计算FFT，再计算双边谱密度，然后计算单边谱密度。在matlab里注意FFt要除以采样点数，计算双边谱时要注意除以频率分辨率。 ( When calculated using the FFT power spectrum density signal, you need to calculate the FFT, and then calculate the bilateral spectral density, and then calculate the unilateral spectral density. In matlab in Note FFt divided by sampling points should be noted when calculating the bilateral spectrum divided by the frequency resolution.)

sorce code for matlab voice recognition

压缩感知信号重构方法—cosamp，此方法可以快速精确地恢复原始信号(Compressed sensing signal reconstruction method-cosamp, this method can quickly and accurately recover the original signal)

Harris角点特征提取MATLAB代码，完整的中文注释了每条命令的用法意义。(Harris corner feature extraction MATLAB code, note the use of the full Chinese meaning of each command.)

PCA的步骤： 1 先将数据中心化； 2 求得的协方差矩阵； 3 求出协方差矩阵的特征值与特征向量； 4 将特征值与特征向量进行排序； 5 根据要降维的维数d’,求得要降维的投影方向； 6 求出降维后的数据； (PCA steps: 1 of the first data center 2 covariance matrix obtained 3 obtained covariance matrix eigenvalues and eigenvectors 4 eigenvalues and eigenvectors will be sorted 5 according to the dimension of dimension reduction d ' , seek to reduce the dimension projection direction 6, the data obtained after the dimensionality reduction )

pdf file see Accelerating MATLAB with CUDA The MATLAB scripts solve the Euler equation in vorticitystream function using a pseudo-spectral method

10V到5V的DCDCbuck电路，自己搭建(10V to 5V DCDCbuck circuit, build their own)

作弊信号检测代码，给定一个数据文件后可以检测出其中的信号(Cheat signal detection code of a data file after a given one of the signal can be detected)