channel

MATLAB, c est un logiciel permettant d effectuer des opérations complexes sur des matrices et vecteurs directement avec la syntaxe matricielle (presque la même écriture que dans les livres et publications). Matlab, c est un interpréteur d opérations matricielles. C est aussi un langage de programmation de haut niveau. Matlab est écrit en C, mais il ne demande aucune connaissance du C de l utilisateur.

preconjgrad：预处理共轭梯度法求线性方程组Ax=b的解 conjgrad：共轭梯度法求线性方程组Ax=b的解 twostep:两部迭代法求线性方程组Ax=b的解 fastdown:快速下降法求线性方程组Ax=b的解(preconjgrad: preconditioned conjugate gradient method for solving linear equations Ax = b solution conjgrad: conjugate gradient method for solving linear equations Ax = b solution twostep: Two iterative methods for solving linear equations Ax = b, Solution fastdown: rapid descent method for solving linear equations Ax = b solution)

Matlab code ofLDPC coding

该书为冈萨雷斯的数字图像处理及MATLAB实现，该书介绍了数字图像处理技术和MATLAB图像处理技巧(Gonzalez book digital image processing and MATLAB implementation, the book introduces digital image processing technology and MATLAB image processing techniques)

在matlab环境下使用ACO蚁群算法解决TSP旅行商问题(In the matlab environment using ACO ACO algorithm to solve the traveling salesman problem TSP)

函数Jf用来求所付代价的增加值，只要在matlab中输入Jf=Jf(a)得到的结果就是J了，其中a的值为对应的 值； 函数Rf用来求所收益增加值，只要在matlab中输入Rf=Rf(a)得到的结果就是R了，其中a的值为对应的 值； 如果要修改表格的值的话，就对应的修改函数Jf和Rf中的数组y的值就好了，M的值和N的值以及r的值都可以修改的。 (Used to demand the consideration paid for the increase in value of the function Jf, in matlab enter Jf = Jf (a) the results obtained is J, the value corresponding to the value of a function Rf used to ask or gains added value, as long as Rf = Rf (a) input in matlab result is R, where a value of corresponding value If you want to modify the value of the form, it corresponds to modify the function Jf and Rf array y values ​ ​ like , the values ​ ​ of M and N values, and the value of r can be modified.)

DSB_AM双边带调制技术的MATLAB仿真(Bilateral DSB_AM modulation techniques with MATLAB simulation)

Extraction of real modes complex modes in the modal analysis associated with dynamics of structures

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.)

This code permit to simulate the sound received on microphones given their positions, the positions of the sound source(s), the frequency sampling of acquisition and the speed of sound. Assuming anechoical conditions.