Viscoelastic

matlab codes for digital audio procces

高加速寿命试验（HALT）的相关知识与文章，可帮助硬件开发人员提高产品的可靠性与寿命，大大缩短开发周期(Highly Accelerated Life Test (HALT) of the relevant knowledge and articles that can help hardware developers to improve product reliability and service life, greatly shorten the development cycle)

该文件是我自编的FDTD 1D 2D 3D的入门MATLAB程序。然后包含一些贴片天线的代码。全是自编，点击可运行。(The files are the codes for FDTD coding including 1D 2D 3D using MATLAB. There are also codes for patch antenna modelling)

利用ASIHTTPREQUEST与服务器交互的最简单的例子(How to use ASIHTTPREQUEST)

对小波信号进行去噪处理，主要采用分层重构，软硬阀值的方法进行仿真。(To deal with the noise of the wavelet signal, mainly adopts hierarchical reconstruction, hard and soft threshold method are simulated. )

解凸优化的工具包,使用简单，有使用指南。适用于最新版的matlab(the tool for convex optimization, used easily . the userguide is attached)

说明：  matlab 编写的模拟退火算法用于求解TSP问题，里面有中国31个城市的坐标，作为例子。(matlab sa for tsp )

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 )

基于SIFT的图像配准，使用的是matlab自带函数(SIFT-based image registration, using its own function matlab)

求信号的幅度谱和相位谱,用matlab画出波形比比较(work out the amplitude and phase spectrum of a signal)