sound2

功率谱描述功率谱描述功率谱描述功率谱描述功率谱描述(Power spectrum described)

fisher分类器matlab代码，只具有二分类特性，可运行(fisher classifier matlab code, has only two classification features, you can run)

此程序为MATLAB环境下编写的用于对图像的平均梯度进行计算 从而对图像的清晰度 图像的质量进行评价的代码。(This program is written in MATLAB environment is used to calculate the average gradient image sharpness of the image and thus to evaluate the image quality of the code.)

digital signal processing

matlab学习资料综合，从入门到精通，十分经典，值得拥有！(matlab comprehensive learning materials, from entry to master, very classic, worth having!)

三维时钟 非常漂亮 可以通过这个程序了解一些里面的逻辑思维 非常有用(sanwei shizhong piaoliang useful)

Abstract—This paper investigates the performance of a 4-switch, 3-phase Z-source inverter (4S3P)

稀布阵列matlab波束形成程序，可画出9阵元稀疏阵列的阵列方向图和阵列布阵示意图，有详细的注释，适合初学者参考(thinned array beamforming)

由于卫星与用户接收机二者的连线方向上存在相对运动，因此引起了载波和伪码的多普勒效应，再加上接收机晶体震荡频率漂移和卫星时钟频漂等原因。接收机实际接收到的卫星载波中心频率一般不再等于信号被发射时的标称频率，这就需要接收机在载波频率一维对信号进行搜索。同时，由于卫星到接收机的距离时刻变化，加上接收机始终相对于GPS时间的偏差又并不固定，因而接收信号的伪码相位值也在改变，所以接收机也要在码相位一维对信号进行搜索。扩频信号的捕获是一个对目标信号频率域和相位域进行的二维搜索过程。(Because of the relative motion between the two of the satellite and the user receiver, the Doppler effect of the carrier and pseudo-code is caused, and the frequency drift of the oscillation of the receiver crystal and the frequency drift of the satellite clock are added. The frequency of the satellite carrier center that the receiver actually receives is generally no longer equal to the nominal frequency of the signal being transmitted, which requires the receiver to search the signal in one dimension of the carrier frequency. At the same time, because the distance between the satellite to the receiver is changed, the deviation of the receiver always relative to the GPS time is not fixed, so the pseudo code phase value of the received signal is also changing, so the receiver also searches for the signal in the code phase. The acquisition of spread spectrum signal is a two-dimensional search process for the frequency domain and phase domain of the target signal)

程序展示了bayes classifier对于连续数据的应用，假设数据均服从高斯分布。程序包含了binary classification和multi-classification的例子。(Program shows bayes classifier for continuous data applications, assume that the data are Gaussian. Program includes a binary classification and multi-classification examples.)