ADPCM

Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document. A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.

神经网络的使用方法，希望对大家有用，适合有基础的学生自己研究(Use of neural networks, we want to be useful for students who have their own research foundation)

这是一个用matlab实现直方图增强的自己编写的函数，内有详细的文档说明，函数为自己编写，未调用系统函数。课程设计所写，亲测可用！(This is a histogram of the enhanced functions matlab realize I have written, with detailed documentation, the function is to write your own, do not call the system functions. Written curriculum design, pro-test available)

产生随机信号观测样本，不同信噪比和归一化频率。用Leivison-Durbin迭代算法求解AR模型的系数并估计功率谱。(Generate random signal observation samples, different signal to noise ratio and normalized frequency.Use Leivison- Durbin iterative algorithm of AR model coefficients and estimate the power spectrum.)

this word contain a code for a part of a paper for histogram modification

滤波求和方式实现宽带波束形成，基于分段非线性权重值的Pso算法，这个有中文注释，看得明白，通过matlab代码，非归零型差分相位调制信号建模与仿真分析 ，matlab程序运行时导入数据文件作为输入参数，使用拉亚普诺夫指数的公式，抑制载波型差分相位调制。( Filtering summation way broadband beamforming, Based on piecewise nonlinear weight value Pso algorithm, The Chinese have a comment, understand it, By matlab code, NRZ type differential phase modulation signal modeling and simulation analysis, Import data files as input parameters matlab program is running, Raya Punuo Fu index using the formula, Suppressed carrier type differential phase modulation.)

matlab环境下的Q学习算法代码,从收费网站下的，可以运行。(reinforcement learning code in MATLAB)

微信定位源代码,微信定位精灵,定位助手,微信定位软件(Micro-channel positioning source code, micro-channel positioning elves, positioning aides, micro-channel positioning software)

阵列信号处理中改进型的盖氏圆信源数估计详细程序(The number of the Gerschgorin source array signal processing, improved estimate detailed procedures)

说明：  一个很实用的MATLAB程序，望给需要的人带来方便(A very useful MATLAB program, hope to bring convenience to people in need)