signalprocessing

说明：  联邦卡尔曼的学习资料。英文资料，希望对大家有用！(Federal Kalman' s learning materials. Information in English, and I hope useful!)

利用MUSIC算法来分析信号的频率，MUSIC算法的有效性分析(Analysis of the validity of the MUSIC algorithm to analyze the frequency of the signal, MUSIC algorithm)

Everyday Practical Electronics Magazine 2010 september

用于快速处理压缩感知的程序。输入原向量及其长度即可得出压缩前向量。（需要使用pdco.m文件。）(For fast processing of compressed sensing program. Enter the original vector and its length can be derived before compression vector. (Need to use pdco.m file.))

Data Encryption by Matrix Multiplication We will only use numbers 0 to 26 for the encryptive mathematics operation. Numbers from 1 to 26 are for letters from A to Z and 0 is for all non-letter characters. To minimize usage of numbers, all letters are converted to upper case. The original message is converted to number array according to the ASCII table and minus 64. We partition whole array into blocks of 8 numbers. The last block may be added several zeros. Then multiply each block by the an 8x8 matrix A which is invertible in Z27 to get cipher data. The decryption is the same process except to use its inverse matrix B. For good visual reading, we convert all non-letter characters to under score for the decryption.

说明：  声纹识别。即说话人识别的GMM-UBM 模型文档(Voiceprint recognition. GMM-UBM model document for speaker recognition)

说明：  体会数值算法的稳定性与不稳定性，线性方程组的迭代法，包括Jacobi迭代法和Gauss-Seidel迭代法，SOR迭代(Experience of numerical stability and instability of the algorithm to learn how to avoid instability in the algorithm and numerical stability of the algorithm chosen to experience the stability of the algorithm' s status in the selection algorithm)

demonstrates the forward difference method

本实验要求掌握时域特征分析原理，并利用已学知识，编写程序求解语音信号的短时过零率、短时能量、短时自相关特征，分析实验结果，并能掌握借助时域分析方法所求得的参数分析语音信号的基音周期及共振峰。基于MATLAB的语音信号时域特征分析(In this study, the analysis required to master the principles of time-domain characteristics, and use the learned knowledge to write programs to solve short-time speech signal zero-crossing rate, short-time energy, short-term autocorrelation features, analysis of the experimental results, and can grasp the time domain by means of analytical methods pitch the determined parameter analysis of the speech signal and formant. Based on time-domain characteristics of the speech signal analysis MATLAB)

matlab环境下的前推后代法潮流计算程序，是7个节点的配电网。(before pushing sweep method flow calculation program matlab environment, the distribution network is seven nodes.)