一个Mfcc和Gmm的说话人识别MATLAB程序

对于一幅输入图像，将产生一幅输出图像，输出图像的每个像素点的灰度值由输入像素点决定，将感兴趣特征的对比度扩展使之占据可显示灰度级的更大部分。使一输入图像转换为在每一灰度级上都有相同的像素点数，均衡化会减少灰度级数。大多数自然图像由于其灰度值分布集中在较窄的范围之内，引起图像细节不够清楚。采用直方图修正后可使图像的灰度间距拉大或使灰度均匀分布，从而增大了反差，使图像细节清楚，达到增强的目的。(For an input image, will produce an output image, the output image gray value of each pixel from the input pixel decided to expand interest in the contrast of features to make it account for more gray levels can be displayed most. Make an input image is converted to grayscale in each pixel have the same points, equalization will reduce the gray series. Most natural images because of their gray value distribution concentrated in a narrow range, causing the image detail is not clear enough. Make the image histogram revised by the gray space widening or so gray uniform distribution, thereby increasing the contrast between the image details clear objective to achieve enhanced.)

基于MATLAB实现了极坐标下的傅里叶变换，对一个给定 n×n 的二维信号，其计算复杂度等价于笛卡尔坐标下的2D-FFT，可广泛应用于图像处理和分析。(A fast high accuracy Polar FFT algorithm is given in the software package written in MATLAB. For a given 2D signal of size n×n, the algorihtm s complexity is just like in a Cartesian 2D-FFT, which can be used widely in image processing and analysis.)

小波多层分解单层重构程序，对非平稳时间序列进行多尺度分解，然后进行单层重构。(Wavelet decomposition multilayer single reconstruction program, for non-stationary time series multiscale decomposition, and then single-remodeling.)

采用DIT和DIF两种蝶形算法实现的FFT变换，其中myfft1是DIT算法，myfft2是DIF算法，已经过测试，可以方便使用。(DIT and DIF using two algorithms of FFT butterfly transformation, which myfft1 is DIT algorithm, myfft2 is the DIF algorithm, has been tested, it will be convenient to use.)

说明：  跳频是按跳频序列随机改变一个信道所占有频道频率的技术。在GSM 系统中，可利用跳频技术频率分极和干扰分极的特点，改善网络质量。引入跳频技术，可保证在网络软拥塞不上升的情况下，频率复用度较小。(FH frequency hopping sequence is based on a random channel change in the country channel frequency technology. In the GSM system, can make use of frequency hopping technology sub-polar and polar characteristics of interference and improve network quality. The introduction of frequency-hopping technology to ensure that congestion in the network does not increase in the soft case, a smaller frequency reuse moment.)

用vc调用matlab7.0写的小程序，可以实现简单的控制系统仿真演示(with vc call matlab7.0 write small programs, can achieve a simple control system simulation demo)

a steganography algorithm for embeding

matlab code that does singular value decomposition of some data set and denoises the data matrix. after denoising, regression is performed

介绍了MATLAB的基础知识以及一些基本性质和一些源代码(Introduced MATLAB basic knowledge and some basic properties and some source code )

frequency hopping spread spectrum model