ADE-Crank-Nicolson

文件中含有三个代码，分别是PSO, PSOGET和PSOSET，并附有详尽的注释及过程。(File contains three code, it is respectively PSO, PSOGET and PSOSET, with detailed notes and process. )

steganography tools to hide a text file in an image in true colour.(steganography tools to hide a text file in a n image in true color.)

这两个小程序均为matlab的.m文件，08为图像的自适应魏纳滤波，09运用5种不同的梯度增强法进行图像锐化。(these two small procedures are Matlab. M documents, 08 of the images Weiner adaptive filtering, 09 using five different gradient Enhancement Act for image sharpening.)

Field 2 是丹麦理工大学（Technical University of Demark）的J.A.延森（Jorgen Arendt Jenson）开发的一款超声模拟软件，该软件基于线性声场理论， 其最基本概念是空间冲击响应，最早由Tupholme和Stepannishen等提出，空间冲击响应是一个和何置相关的函数，它与换能器上的激励信号卷积，可以得到发射波到焦点的任意一点的声场。换能器接收同波信号相当与发射的逆过程，将空间的反射点作为发射源，与接收换能器的空间冲击响应卷积，从而得到回波信号。(Field 2 is the Technical University of Denmark (Technical University of Demark) is an ultrasound simulation software JA Jensen (Jorgen Arendt Jenson) developed the software based on the linear sound field theory, the basic concept is the spatial impulse response, first by Tupholme and Stepannishen and other proposed space impulse response is a home-related functions and what its convolution with the excitation signal transducer, you can get any of the transmitted wave to the focal point of the sound field. Wave transducer receives a signal corresponding with the inverse process of transmission, the reflector point in space as a transmission source, and the receiving transducer spatial convolution of the impulse response, thereby obtaining the echo signal.)

纯语音和带噪语音,信噪比,带噪语音的产生,语音信号的预处理一——消除趋势项和直流分量(Pretreatment with a pure voice and noisy speech signal to noise ratio, resulting in noisy speech, the speech signal- to eliminate the trend term and DC components)

在数值方法中，用Matlab实现Gaussian Hermite， 此方法用来计算数值积分(Gaussian Hermite)

运用误差矢量幅值法(EVM)对信号的载噪比进行估计(Method using error vector magnitude (EVM) of the carrier signal-to-noise ratio estimate)

解决离散傅里叶变换的能量泄露问题，使得傅里叶变换的结果更加的准确。(Solving the Energy Leakage Problem of Discrete Fourier Transform)

mewton迭代法，是数值分析中很重要的一种，源码为其在matlab中的实现。(mewton iterative method, numerical analysis is a very important one in the matlab source code for its realization.)

This is a morpholog methods that process an image with (Dialion, Erosion, open , close ,,etc)