code4

he "while" loop uses a formula in ISSO, Chap. 10 the "identical" variable in the formula

超级详细的matlab教程，对于各种算法有详细介绍，matlab初学者适用，里面有很多例子，例如最优化(Super detailed matlab tutorials for a variety of algorithms are described in detail, Matlab beginners applies)

MATLAB中一些经典的算法汇总。聚类算法、概率算法、神经网络、模拟退火等算法(Some classic algorithms in MATLAB are aggregated. Clustering algorithm, probabilistic algorithm, neural network, simulated annealing algorithm and so on.)

helpful code to mooths data by clicking on the figure

全带宽服务器（TBS）simulink仿真(Full bandwidth server simulink simulation)

Speech compression using Linear Predictive Coding. LPC is the oldest and the most basic of modern speech coders. Its a lossy scheme. Playback quality isn t preserved in the process but it can be used in low bit-rate systems.

说明：  了解matlab编程的机制，里面包含了80多个matlab程序，是初学者的必备资料。(Matlab program to understand the mechanism, which includes more than 80 matlab program, is essential information for beginners.)

本文提出了一种基于独立分量分析的音频数字水印方法。嵌入水印时,对原始音频文件进行一级小波分解,在分解 得到的逼近分量中利用随机混合方法嵌入水印后进行小波逆变换形成嵌入水印的音频文件。仿真实验结果表明这种方 法的强鲁棒性和可行性。(Abstract:Audio p roduction is one of the important digital multimedias, which transmit becomes more and more convenient. To p revent the multimedia content from being stolen or illegally used, audio content p rotection techniques become increasingly impor2 tant so that the potential of these app lications can be reached. As the importantmethod of copyright p rotection, the digitalwater2 marking technology has been acquired widely recognition and research. This paper p resents a method of digital audio watermark2 ing based on independent component analysis. When embedding watermarking, the original audio is decomposed by single2level discrete 12D wavelet transform, watermarking is embedded by mixing randomly to the app roximation coefficient vector obtained, and the audio is single2level reconstructed receiving audio havingwatermarking. Emulated experiment results show that thismeth2 od is robust and feasible.)

chi-square testing for lognormal distribution

关于小波去噪的程序，分为几种情况，适用于消除语音信号噪声(Wavelet Denoising of the program is divided into several cases for the elimination of the speech signal noise)