lannen

研究中我么采用分段的方法对数字音频信号嵌入水印。为便于研 究，以灰度图像为数字水印原始信号经二值化处理后得到水印再嵌入 音频信号的离散变换域中，从而得到嵌入水印的音频信号，其实现过 程原理框图如图1 所示。在水印嵌入的过程主要实现四个阶段的任 务：(1)数据准备与预处理，主要是准备好水印原始图片和待嵌入水印 的音频信号 (2)音频信号分段处理，用于嵌入水印的音频数据部分等 分成(m1*m2)个音频数据段 (3)水印图像降维处理，在此过程灰度图像 水印转化为二值图象, 要将其嵌入到一维的数字音频信号中, 必须将 二维的图像转化成一维的序列 (4)将水印嵌入到数字音频信号中,从而 最终获得带数字水印的音频信号。(The study I Mody, segmented digital audio signal embedded watermark. Discrete transform domain to facilitate the study of the grayscale image for the digital watermark the original signal is obtained after the binarization processing watermark embedded in the audio signal, thereby obtaining the watermark embedded in the audio signal, and its implementation process schematic block diagram shown in Figure 1. Mainly in the watermark embedding process to achieve the task of four phases: (1) The data preparation and pretreatment, is ready to watermark the original picture and to be embedded in the audio signal of the watermark (2) audio signal segment processing for embedding watermark The audio data portion is divided into (m1* m2) audio data segment (3) The watermark image dimension reduction processing, binary image is converted to grayscale image watermark in this process, and to be embedded into a digital audio signal of a one-dimensional , two-dimensional images must be converted in)

用matlab实现1000组复数数据的拟合，并计算拟合函数的归一化均方误差（NMSE）.(1000 groups using matlab fitting complex data, and calculate the fit function normalized mean square error (NMSE).)

检验已有的一组数据的概率分布是否为某种分布(Verify whether the data is a certain distribution)

FUNCTION FILE DMC VARIABLES

模式识别领域里的聚类分析：C-MEANS算法(Cluster analysis: C-MEANS ALGORITHM)

Matched filter creator for matlab

5/10/15/20阶的语音信号LPC 预测及其功率谱，并绘制误差函数图像(5/10/15/20 LPC prediction order of the voice signal and the power spectrum, and the mapping of the image error function)

自适应噪声对消器，消除语音中的噪声，算是探讨性质的小程序吧(Adaptive noise cancellation, and voice in the elimination of noise)

K-F域偏移，对于用于常速度偏移处理，程序简单使用。(KF domain migration, migration for constant velocity.The program is simple to use. .)

matlabCT的重建的程序,希望对大家有所帮助。内含仿真头的程序。(matlabCT reconstruction program, we hope to help. The program includes the dummy head。)