fft

re synthesize the speech signal

说明：  reyleigh信道模型，该模型介绍了6种不同的建模方式，以及检测信道正确与否的方法，包括单径和多经(reyleigh channel model, the model introduced six different modeling methods, and detection Channel correct methods, including single-and multi-Drive by)

在程序中用一般的MUSIC方法估计了信号的频谱，从两图中可看出在信号各频率处，频谱的峰值较大，故能明显的与噪声相区别，可在一定程度上避免在信号幅度较小时信号被噪声淹没的情况。(MUSIC method general procedures used to estimate the spectrum of the signal, it can be seen from the two graphs in the signal at each frequency of the spectrum peak larger, and it could be significantly distinguished from noise in the signal can be avoided to some extent a lesser extent, the signal is noise submerged.)

无约束一维极值问题，进退法，黄金分割法、奜波那契法，牛顿法，割线法，goldstein法，wolfe-powell 算法matlab源代码(Unconstrained a d extremum problems, in a method, the golden section method, wave that contract law, Newton method, secant line rule, goldstein method, Wolfe-Powell algorithm matlab source code )

Compare FDM and FEM method in 1D

说明：  MATLAB教程，没什么好说的，包含一下东西： MATLAB6.0教程初级；Matlab讲义高级；精通matlab综合辅导与指南；MatLab工程数学应用；MATLAB命令大全；matlab统计工具箱函数汇总；MATLAB应用程序接口用户指南(MATLAB tutorial, there is nothing to say, and includes things like: MATLAB6.0 Tutorial primary Matlab senior notes proficient matlab comprehensive counseling and guidance MatLab Application Engineering Mathematics MATLAB command Guinness matlab statistics toolbox function summary MATLAB Application Program Interface User)

Wifi Simulator for 802.11a Simulation

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)

一种经典的K-SVD的分析工具包，有需要的可以一起下载下来研究下(A classic K-SVD analysis toolkit can be downloaded along with the need to study down under)

Pegasis protocol in matlab for routing analysis