Handout1

DCT 音频水印 嵌入与提取 并进行攻击 (DCT SHUIYIN CHENGXU)

code in matlab for detection

根据经纬度计算两点间的球面距离（两种方法基于球面余弦公式，基于Haversine公式）、计算方位角。(calculate spherical distance and azimuth angle by Latitude and Longitude)

本程序可以对一个模拟信号进行数字化，使用的是PCM即脉冲编码调制，其结果是将样值转化为8位PCM编码。现今语音编码大多数采用这类编码方法(This procedure can be an analog signal to digital, using pulse code modulation or PCM, and the result is kind of value will be translated into eight PCM coding. Most of the current speech coding to adopt this type of coding method)

在matlab环境下读取两个txt文档中的内容，并实现两个内容的相似性比较(compare with two groups of int number)

基于的BPSK的matlab，完整的程序，有能相关的说明和注释，有需要的朋友下载吧~(Based on the matlab BPSK, complete program and relevant instruction and comments, the need to download friends ~)

基于Matlab 5.3开发的ofdm仿真程序，能测试基本的ofdm仿真流程并画出波形图。(Developed based on Matlab 5.3 OFDM simulation program that can test the basic OFDM simulation of flow and draw waveforms.)

说明：  关于图像处理的matlab一百多个源程序(matlab)

是信号处理的基础，大学数值分析算法，一种基于多文档得图像合并技术。( Is the basis of the signal processing, University of numerical analysis algorithms, Based on multi-document image obtained combining technique.)

求解瞬时频率函数，一般在matlab时频分析中使用(Solve the instantaneous frequency function, usually in the time-frequency analysis using matlab)