Semestralka

Companding is essentially a technique for achieving non-uniform quantization. There are basically 2 methods which are most popular in literature.:-A-law companding and u-law companding. These algorithms help in achieving to an extend, compression. The given code shows how to compress a 14-bit code to 8-bit code and its digital implementation using matlab. Please contact by mail if a detailed description of code is needed.

m file to convert Lat Long geodetic coordinate system to Cartesian

gaussian mixture and em algorithm

Classify using the maximum-likelyhood algorithm(classifies using the maximum- likelihood al gorithm)

产生shepard tone，用matlab(Produce shepard tone, using matlab)

DTW算法的程序，申请两个n*m的矩阵D、d,分别为累积距离和帧匹配距离。这里n和m为测试模版与参考模版的帧数。然后通过一个循环计算两个模版的帧匹配距离d。接下来进行动态规划，为每个格点 （i，j）都计算其三个可能的前续格点的累积距离D1，D2，D3。考虑到边界问题，有些前续格点可能不存在，因此加入一些判断条件最后利用最小值函数min()，找到三个前续格点的累积 距离作为累积距离，与当前帧的匹配距离d（i，j）相加，作为当前格点的累积距离。该计算过程一直达到格点（n，m），并将D（n，m）输出，作为模版匹配的结果。(DTW algorithm procedures, apply two n* m matrix D, d, respectively, accumulated distance and frame matching distance. Where n and m is a reference test pattern and the template frames. Then through a loop to calculate two frames template matching distance d. Next, dynamic programming, for each grid point (i, j) are calculated from the cumulative D1 before the renewal of its three possible lattice point, D2, D3. Taking into account the boundary problem, some former continued grid point may not exist, so add some conditions to determine the final use of the minimum function min (), found three former continued accumulation of grid points cumulative distance as the distance from the current frame to match the d (i, j) added, and a current cumulative distance grid. This calculation has reached the grid (n, m), and D (n, m) output, as a result of template matching.)

K-均值算法的Matlab源代码，比较简短(Matlab source code of K-means algorithm )

随机数发生器 此功能会产生连续的值（功法的文章中讨论的五个分布随机分布，指数，对数正态分布，拉伸指数，截止功法）。使用信息包含在文件类型的帮助randht在MATLAB提示符更多信息。 幂律分布拟合 这项功能同时实现的离散和连续的最大似然估计拟合幂律分布的数据，以及善良的合适的方法来估计缩放区域较低的截止。使用信息包含在文件类型的帮助plfit在MATLAB提示符更多信息。(This function is a random number generator will produce discrete values ​ ​ (power law discussed in five articles distributed random distribution, exponential, lognormal, stretching index cutoff power law). The use of information contained in the file type of help randht in MATLAB prompt for more information. Power-law distribution fitting This function implements both discrete and continuous maximum likelihood estimation fitting power-law distribution of data, and kind suitable method to estimate the scaling region lower cutoff. The use of information contained in the file type of help plfit in MATLAB prompt for more information.)

语音信号处理中，高通滤波器的设计，实现效果比较好的(Speech signal processing, high-pass filter design, to achieve better results)

详细比较了Matlab与其他 语言的优点，并讨论了用Matlab进行有限元编程的技巧(Matlab and a detailed comparison of the advantages of other languages, and discussed the finite element with Matlab programming skills)