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此函数实现了自动语音增强算法，使语音在指定的动态范围内。(This function has automatic speech enhancement algorithm, so that voice at the specified dynamic range.)

各向异性图像特征提取、1-d，2-d，3-d均有(anisotropic Image feature extraction)

说明：  正态总体参数的检验,调用ztest和ttest函数(Inspection normal population parameters)

A set of Matlab experiments that illustrates advanced computational signal and image processing.

Ant Colony Algorithm for Non Constraint Optimization Problem

This paper presents a novel algorithm of hiding secret messages by applying mathematical lemmas and information theory. The proposed algorithm can hide more information with acceptable embedded rate and achieves requirements of information hiding algorithm and simply information extracting. The main idea is applying modern algebra to solve the information hiding problem in multimedia. In order to prevent some attacks on stganography, hidden initial bits of image data pixels are chosen randomly. The extracted information are achieved without the reference of the original image and extracted keys. The experiment results show that our approach is effective and reliable.

pcm codification signals matlab code

介绍粒子群算法的一种改进算法的实现代码，具有很大的参考意义。(Introduce particle swarm algorithm is an improved algorithm implemented code, is of great referential significance. )

matlab编写的信号分解，采用HHT变换的EMD分解方法，提取信号的各阶EMD分量。(matlab write signal decomposition, the use of HHT transform EMD decomposition method to extract the signal component of each order EMD.)

混沌系统的具有时滞Liu系统的Poincare截面图(Liu chaotic system with time delay system, Poincare sections)