coil

短时fourier变换 tfrstft计算离散信号x（t）(Short-time fourier transform discrete signals tfrstft computing x (t))

电力系统潮流计算编程 C++程序 简单易懂的程序(Power Flow Programming C++ program easy to understand procedures)

bat algorithm for optimization

描述的是两个振动信号的合成，注意采样点数、间隔、频率、振幅、初始相位的不同而带来的变化(Described in the synthesis of the two vibration signal, alert the sampling points, the interval, frequency, amplitude, an initial phase of the type of changes brought)

：针对城市电网无功优化规划工作缺乏支撑工具的问题，结合实际业务特点，运用多层次的问题分解和 分层架构设计思想，研发了适用于城市高中压配网的无功优化规划软件模块，包括优化计算、原始数据与结 果数据管理子模块，涵盖现状年及目标年单阶段和多阶段无功优化规划功能。(Research on Reactive Power Planning Module for Urban Power Network)

this file is for mfcc extraction

基于小波变换的ECG信号去噪，可以改小波基、阈值等参数完善实验效果，注释详细。尤其对这方面的初学者有参考价值。(ECG signal denoising based on wavelet transform.Wavelet basis , threshold and other parameters can be modified to improve the experimental results. detailed notes is especially valuable for beginners . )

傅里叶变换和小波变换重建图像的比较效果，这个程序可以用来实现四个要求：1、FFT和WT重建效果比较；2、通过改变小波来比较重建效果；3、通过改变分解层数来比较重建效果；4、通过改变大系数个数来比较重建效果。其中还有一个计算PSNR的程序(the comparative effect of reconstruction image by Fourier transform and wavelet transform 。 the program can be used to achieve the four requirements: 1, FFT, and WT reconstruction effect 2, by changing the wavelet to compare the reconstruction effect 3, by changing the decomposition layers to compare the reconstruction effect 4, by changing the number of large coefficient of comparative reconstruction results. Including a procedure of calculating PSNR )

一个可以实现矩形阵列信号处理的程序，大家试一试吧(A rectangular array signal processing can achieve the program, we try it)

calculating the square root of A by Newton method used to calculate the root of A by the method of Newton: usual and the modified method