scan_image

麦克风指向性调试源码，可用于麦克风指向性测试，对声学研究有用(Debug source directional microphone, directional microphone can be used to test for acoustic research useful)

matlab程序设计入门资料，适合初学者使用和学习，从matlab的最基本功能开始教你一步步学习使用这个软件！(matlab programming introductory information for beginners to use and learn, from the most basic function of matlab began to teach you step by step learn to use this software!)

Steganography for watermark encoding and decoding purpose used

基于粒子群算法的PID控制器优化设计，注释说明清晰，程序运行顺畅(Based on Particle Swarm Optimization Design of PID controller, clear explanatory notes, the program runs smoothly)

.NET与Matlab结合 —— 最小二乘法直线拟合（C#）(. NET integration with Matlab- least squares fitting a straight line (C#))

The following Matlab project contains the source code and Matlab examples used for continuous wavelet transform and inverse.

小波降噪、时频分析等方法，系统地研究航天电子设备多余物噪声检测过程中各操作变量和微粒物理参数对声波频谱的影响。通过单因素试验，详细分析了微粒粒径、振动力学条件中加速度和频率等3因素对声音信号频谱分布的影响规律，比较了短时傅里叶变换和小波变换的特点。该结果为进一步识别多余物微粒的参数提供了指导依据(the complexity of the material interaction and the properties of the particles themselves make the received signal difficult to analyse. This paper based on particle collision sound wave mechanism, using the methods of wavelet de-noising, time-frequency analysis and so on, this paper systematically studies the influence of various operating variables and particle physics parameters on the sound spectrum in the process of detecting the noise of aerospace electronic equipment. Through the single factor test, the influences of the three factors such as acceleration and frequency on the spectral distribution of the sound signal are analyse in detail, and the characteristics of the short-time Fourier transform and the wavelet transform are compared. The result provides a guideline for further identification of the parameters of the extraneous particles.)

说明：  在MATLAB运行环境下，基于支持向量机的非线性系统辨识程序！(Run in the MATLAB environment, based on support vector machines for nonlinear system identification procedure!)

matlab code that does singular value decomposition of some data set and denoises the data matrix. after denoising, regression is performed

Taking into account all the parameters mentioned, forming the appropriate programming to the controller in order to achieve the synchronization between the two systems, the appropriate amplitude and as well as the power management to the DC to control the power that is injected to the electrical grid, the results we take are in the range of high performance inverters. In this simulation scenario the power is high as the current has been increased and the THD is low