ML-gradient

Simulation of rayleigh fading channel

说明：  仿真FM系统的调制解调全过程，有相干解调，非相干解调，包括大小信噪比的分析，十分完整~包含程序以及仿真结果。都是自己完成的，还有写程序中的一些问题和心得，希望对大家有帮助(The whole process of simulation FM system modulation and demodulation, coherent demodulation, non-coherent demodulation analysis, including the size of the signal-to-noise ratio, very complete to contain the program as well as the simulation results. All their completion, as well as write programs in a number of issues and experiences, we hope to help)

实现参数辨识，可以自己更改当中的某些参数，实现不同对象的参数辨识(To achieve parameter identification, which can change some of their parameters, to achieve parameter identification of different objects)

运用谱减法，对语音信号进行去噪处理并比较处理前后的信噪比(Using spectral subtraction to denoise the speech signal and compare the signal to noise ratio before and after processing)

matlab 300例（包括源代码） 是通信、图像分析人士必备软件包(matlab 300 cases (including source code) is a communications, image analysis are an essential package)

对frame1进行一个简化的帧内编码方案: A)将图像分为8x8的块. B)将图像每一块做DCT2变换. C)将DCT系数采用11.ppt page 35的亮度量化表量化. 量化系数 = 取整 (DCT系数./量化表). D) 统计整个图像中非零量化系统的比重, 该比重可反映什么? E) 将量化系数进行 IDCT2, 绘制出重建图像.(a example for matlab to deal with a picture)

reconnaissance de parole par des HMM

以优化SVM算法的参数c和g为例，对CS算法MATLAB源码进行了逐行中文注解。(SVM algorithm to optimize the parameters c and g, for example, the CS algorithm MATLAB source was progressive Chinese annotations.)

对于一个随机的非高斯信号或者一个确定信号有很多的信息（远不止功率谱...）。本工具用来分析高阶谱和时频分布。(For a random signal or a set of non-Gaussian signals have a lot of information (far more than the power spectrum ...)。 This tool is used to analyze higher-order spectra and time-frequency distribution.)

基于高斯过程的约束谱聚类，lu zhengdong的论文cvpr08的实现代码，算法可以直接运行，其中含有两个demo(constrained spectral clustering through affinity propogation)