task2

说明：  】利用混沌动力学系统中logistic 映射先对水印图像进行置乱预处理以增强其鲁棒性, 在小波域中将原始音频信号按比例分段, 此比例为原始音频信号低频部分与水印信号个数之比, 然后将水印信号加入到音频信号的 低频部分。用StirMark 攻击后的实验结果表明, 该算法对StirMark 的部分攻击具有一定的鲁棒性。(The logistic- map sequences to encrypt the watermark are used. The original audio signal in DWT (Discrete Wavelet Transform) domain is seperated into some pieces determined by the ratio between the length of the low frequency parts and the length of the encrypted watermark. Every bit of the watermark is added into the relevant pieces of the low frequency parts in the DWT domain. Experimental results show that the algorithm is robust against some StirMark attacks.)

this program water mark a sound in picture with GUI based on haar transfrom

Matlab2010经典超强教程清晰、免费版(Matlab2010 classic super clear tutorials, free version)

基于MATLAB_SIMULINK的模拟通信系统仿真(Simulation-based communication system simulation MATLAB_SIMULINK)

matlab下，使用dspbuilder生成的信号生成模块的源码(Matlab, the use of the signals generated dspbuilder generation module source)

由黄等提出了对EMD的改进方法EEMD，5条程序经过尝试均可使用(By Wong et proposed an improved method for EMD EEMD, 5 bar program has been tried and can be used)

说明：  ASK解调 可实现2ASK 4ASK信号解调 仿真通道(Ask demodulation can realize the simulation channel of 2ASK 4ask signal demodulation)

说明：  本程序为matlab源代码，供大家交流学习，语音识别专用代码(This program is EMD-HHT-M source code for all to share learning, speech recognition-specific code)

这是一个关于全变分的盲复原算法，该算法在实际应用了取得了很好的效果，希望对大家有好处。(This is a variation on the whole of blind image restoration algorithm in the practical application of the good results obtained, we hope to benefit.)

DOA估计中的基本music算法，用于多个信号来向及干扰时测向。(The basic music DOA estimation algorithm for multiple signal direction finding to and interference.)