matlab--basic-study

我国数字电视地面国标和手机电视都采用了LDPC便解码方式。本文档包括Gallager的博士论文以及LDPC领域国内最佳教科书，是学习LDPC的最佳文献。(China Digital Television Terrestrial GB and mobile TV will use the LDPC decoding methods. This document, including Gallager)

09系分习题与解答，适合系统分析人员的学习资料和技术文档(Exercises and answers to sub-09 system is suitable for systematic analysis of the learning materials and technical documentation)

iris recognition using haar wavelet

基于logistic映射的混沌图像置乱加密算法，并对其进行了matlab仿真。(Chaotic logistic map image set chaos encryption algorithm, and its a matlab simulation.)

用MATLAB的可视化功能，设计一个图形用户界面（GUI），在这个界面下完成字符编辑(MATLAB visualization capabilities, design a graphical user interface (GUI), complete character edit interface)

matlab进行人脸识别的简单代码，功能简单仅供参考(simple face recognition matlab code, the function simply for reference purposes only)

说明：  NR法和PQ法潮流计算程序，均是由matlab编写而成的。(NR method and the PQ load flow calculation program)

calssification algorithm1

一个 可以用的matlab程序 将时间序列经验模态分解后 使用最小二乘支持向量机进行预测(A matlab program can be used time series using empirical mode decomposition least squares support vector machine to predict)

对录音信号集 中的某一语音，利用BATLAB设计一美尔例谱算法，并实现。 取信号集 中的一个语音信号：“xxxxxx”，将它作为输入的语音信号来为设计一个美尔倒谱算法，在该算法中，主要设计了以下环节： 1.读入一个语音信号；2.对这个信号归一化；3.对归一化的信号进行加窗处理（这里的矩形窗长度必须为257，重帧长64）；4.进行预加重处理，即通过一个高通滤波器： ；5进行512点的FFT；6.分别取模平方得到功率谱；7.在设计的mel滤波器组中，我采用了25个带通滤波器；8.将得到的功率谱信号通过mel滤波器组，得到相应的25个功率值；9.对这些功率值取自然对数；10.对这些值取离散作弦变换；11.将得到的值去掉直流分量，取其它值作为MFCC参数。 (Concentrated on recording a voice signal, using BATLAB designed Mayer cases spectral algorithm, and implementation. Get a voice signal signal focus: "xxxxxx", will it as input for the design of a voice signal to Mel Cepstrum algorithm in the algorithm, the main design of the following links: 1. Read a speech signal 2. On the signal normalized 3. Of the normalized windowed signal processing (here, rectangular window length must be 257, re-frame size 64) 4. For Pre-emphasis processing through a high-pass filter: 5 for 512 points of FFT 6. modulo square were obtained spectrum 7. in the design of mel filter banks, I use a 25 band-pass filter 8 . will be the power spectrum signal by mel filter bank, corresponding to the 25 power values 9. on the power to take the natural logarithm value 10. to take these values as strings of discrete transform 11. will be of value to out DC component, to take other values as MFCC parameters.)