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自相关基音检测算法是语音信号处理的关键技术，算法的效率直接影响语音信号实时处理的质 量。(Autocorrelation pitch detection algorithm is the key to speech signal processing technology, a direct impact on the efficiency of algorithms in real-time speech signal processing quality.)

图像进行小波分解后，对于相对来说不重要的高频成份采用较高的阈值，进行高压缩；而对集中图像大部分能量的低频成分采用较小阈值，以确保图像恢复时的质量(Image Compression)

陷波器设计,50Hz 陷波器设计源程序，去除工频干扰( design 50Hz notch filter)

凯依的现代谱估计原理与应用.在本书中介绍了近代谱估计的基本理论和方法。(Kay Modern Spectral Estimation Theory and Application of. In this book introduce the modern spectral estimation of the basic theory and methods.)

Digital Signal Processing Solution for AC Induction Motor

独立成分分析（Independent Component Analysis, ICA）是近年来发展起来的一种有效的盲分离技术，最早是由法国学者Herault和Jutten于1986年提出。ICA方法的提出最初是用来解决“鸡尾酒会”问题，其过程可以归纳为，在源信号与传输通道参数均未知的情况下，仅根据源信号的统计特性，出现测信号恢复出源信号。ICA分析的关键在于根据一定的优化准则建立描述输出信号独立程度的优化判据，即目标函数，并设计相应的优化算法，寻求最优的分离矩阵，使得输出信号中各分量尽可能相互独立。采用ICA方法对信号进行盲分离时，可避免过多地受大能量噪声成分的影响，将部分小能量信号源识别出来。随着ICA技术的不断发展，目前ICA技术已经广泛应用于语音增强、音频识别、通信、医学信号处理、金融数据挖掘、图像消噪、数字水印、遥感等领域，并取得了一定的研究成果。(Independent Component Analysis (ICA) Component ini order, developed in recent years is a kind of effective separation technology, originally from French scholars Herault and Jutten in 1986. The proposed method is initially ICA to solve the "cocktail" problem, the process can be divided into, in the source signal transmission channels and in the case of unknown parameters according to the source of the signals, and the statistical characteristics of recovering the source signal. According to the analysis of the ICA key lies in the establishment of optimal criteria described the output signal of the independent, objective function optimization criterion, and the corresponding optimization algorithm, the optimum )

add noise matlab code

说明：  能够很好的实现混沌数字水印技术 并且具有创新功能 (Can achieve the chaotic digital watermarking technology and innovative features)

随机分类：划分定标、预测样品的一种方法。(Random Category: Fallen scaling, a method of forecasting sample.)

此源码实现DOA估计中的TCT算法，保证出结果。 (DOA realize that this source is estimated in the TCT algorithm, to guarantee the result.)