add

MATLAB图片点的像素坐标（读入图片，点击就能显示像素坐标）(MATLAB image point in pixel coordinates (read pictures, you can click the display pixel coordinates))

学习语音增强一篇很好的博士论文，希望对大家有帮助(Learning a good speech enhancement dissertation, we hope to help)

this file gives an overall concept for dsss

设模拟带通信号频率范围1KHz—1.1KHz，设计一个采样频率8KHz数字频谱分析系统，要求频率分辨率0.1Hz。若对信号直接用FFT进行频谱分析(simulation based communications, with the frequency range 1KHz- 1.1KHz. Design of an 8 KHz sampling frequency digital spectrum analysis system requirements frequency resolution 0.1 Hz. If the signal directly FFT spectrum analysis)

这是一个关于matlab的图形教程 (This is a tutorial on matlab graphics)

wind turbine driven permanent magnet synchronous generator

Euler 用前向差分的欧拉方法解微分方程 fun 表示f（t,x） t0,tt表示自变量的初值和终值 x0表示函数在x0处的值,其可以为向量形式 N表示自变量在[t0,tt]上取的点数(this thechafen jiefen ，zijilijie)

进行特征选择，利用权重进行特征选择，代码解释充分(Feature selection is carried out, feature selection is carried out with weight, and the code is fully interpreted.)

inverse filtering and wiener filtering

数值解与理论解对比可知，四阶龙格-库塔法的精度已经很高，用它来解一般常微分方程已经足够了。(Numerical comparison shows that the theoretical solutions, Runge- Kutta method has high accuracy, and use it to solve ordinary differential equations general enough.)