pso-ga

基于FFT的比值算法，是用比值法实现的MATLAB程序。 (Based on the ratio of FFT algorithm, is the ratio method using the MATLAB program realize.)

Sinusoidal PWM for induction motor

these files are related to speech processing and adaptive filtering

设计一个简单的GUI界面，对导入的音频文件进行时域特性分析。计算其时域波形、平均幅度、短时能量、短时过零率。对该音频文件进行加噪处理，分析其时域波形变化。设定一个固定时长，对该音频添加回声并保存为“*.wav”格式文件。 对音频文件的时域分析是对音频文件进行传输、降噪及其他再编辑的基础。其中短时能量可用作清浊音区分的标准和语音起始点的判断。短时过零率可用作判断有声段与无声段和从背景噪声中提取语音信号。 (Design a simple GUI interface that time domain characteristics analysis on import audio files.Calculate the average time domain waveform, amplitude, short-time energy and short-time zero crossing ratio.Add to deal with the noise of the audio files, analyze the changes in the time domain waveform.To set a fixed time, to add the audio echo and saved as a *. Wav format file. The time domain analysis of the audio file was transmitted to audio files, noise reduction and other editor again.The short-time energy voiced distinguish between standard and can be used as a clear voice starting point judgement.Short-time zero crossing ratio can be used as a judgment audio segment and silent segment and extract speech signal background noise.)

该程序属于行业小软件，用于读取二维地震剖面图的segy格式，将其转换成matlab适用的矩形。(The program is part of a small business software for reading 2D seismic profiles of segy format, convert it into matlab applicable rectangle.)

说明：  基于Matlab编写的手写字符特征提取代码(Matlab-based feature extraction handwritten character written in the code)

stanford大学vgg组著名的多视几何matlab工具箱vgg，包含特征点匹配、几何校正等(stanford university vgg group famous multi-view geometry vgg matlab toolbox, including a feature point matching, geometric correction, etc.)

盲信号分离程序，用于期望信号的提取，和对干扰信号以及噪声的抑制。(Blind signal separation procedure for extracting the desired signal and suppress interfering signals and noise.)

k程序差分进化工具箱 - DeMatMATLAB包括拥有数百个内部函数的主包和三十几种工具包。工具包又可以分为功能性工具包和学科工具包。功能工具包用来扩充MATLAB的符号计算，可视化建模仿真，文字处理及实时控制等功能。学科工具包是专业性比较强的工具包，控制工具包，信号处理工具包，通信工具包等都属于此类。(k programs differential evolution toolbox- DeMatMATLAB including internal functions with hundreds of primary packages and several 30 kits. Kits can be divided into functional disciplines toolkit and toolkit. Function tool kit used to expand the MATLAB symbolic computation, visualization, modeling and simulation, word processing, and real-time control functions. Discipline tool kit is relatively strong professional toolkit, Control Toolkit, signal processing toolkit, communications toolkit belong to this category.)

fdtd 在自由空间没有吸收边界的情况下的代码(1D FDTD simulation in free space Without Absorbing Boundary Condition )