Data-Analysis-and-Graphics

非下采样轮廓波变换的应用，可以对该变换有一个很好的理解(Transform under the profile of non-sampling applications, the transformation can have a good understanding of)

Abstract— We propose a simple speech compression algorithm using subband division and ADPCM (Adaptive Differential Pulse Code Modulation) algorithm. Although speech data are stored in a semiconductor memory device, its capacity and the available network capacity are limited. Therefore, it is necessary to compress the data as much as possible. The first is that the reconstructed datum must be understood correctly. Speech signal is compressed with a ratio of 1/4 using the proposed subband division and ADPCM (Adaptive Differential Pulse Code Modulation) algorithm.

说明：  电力有源滤波器仿真电路图子电路图之三，算法是经典的dq0算法(APF circuit simulation circuit-ter, the algorithm is the classic dq0 Algorithm)

程序对4发4收系统进行V-BLAST检测算法的仿真。发送信号采用QPSK调制，信道为准静态瑞利平坦衰落信道，引入的噪声为均值为0的高斯白噪声，接收端分别采用ZF、MMSE、ZF-OSIC、MMSE-OSIC四种检测算法，根据其误比特率比较性能。(V-BLAST detection algorithm simulation program 4 of 4 admission system. Send signals using QPSK modulation, channel quasi-static Rayleigh flat fading channel, the introduction of noise with mean zero Gaussian white noise receiving end, respectively, ZF, MMSE, ZF-OSIC, MMSE-OSIC four detection algorithm based on its The bit error rate of the comparative performance.)

工具箱中包含台湾清华大学张星智教授的三个语音信号处理工具箱，还有常用的voicbox以及一份详细讲解如何添加工具箱的word教程。(Toolbox contains the word tutorial Tsinghua University of Professor Zhang Xingzhi three voice signal processing toolbox used voicbox explain in detail how to add a toolbox.)

快速计算菲涅尔衍射光场，将菲涅尔衍射公式转换为快速傅里叶变换FFT，可以直接嵌入程序中使用，对菲涅尔计算全息很有用！(Fast calculation of Fresnel diffraction field, Fresnel diffraction formula will convert the fast Fourier transform FFT, can be directly embedded program using the Fresnel CGH is useful! ! !)

i am submitting some program on pso

matlab的eof程序，比较好用，而且说明清晰，希望对大家有用(program to do EOF analysis, and scale the EOFs. This is an example of scaling EOFs)

非线性动力学之洛愣子方程的混沌运动Matlab仿真分析(Matlab simulation analysis, the chaotic motion of the nonlinear dynamics of the Los stunned Equations)

该程序实现的是扩展卡尔曼粒子滤波，即采用扩展卡尔曼滤波得到粒子滤波的建议分布，粒子滤波再从其中采样进行滤波。(The program implementation is the extended Kalman particle filter, that is, extended Kalman filter using the particle filter proposal distribution, the particle filter and then is filtered from one sample.)