power_machines

example program of non linear equation

Sum of values ignoring NaNs

数值计算里经典的欧拉算法的源程序，采用matlab写的，对理解欧拉算法有很大的帮助作用。(Numerical calculation in the classical Euler algorithm source code, using matlab write, for understanding Euler algorithm has a great help.)

MATLAB设计对信号进行频谱分析和滤波处理的程序(MATLAB design of signal spectral analysis and filtering procedure)

Multi-shift CGLS solves the systems of linear equations (A *A+TAU(I)*EYE(N))*X(:,I)=A *B (I=1:L) for X with the multishift CGLS algorithm. The right hand side (column) vector B must have length M, where the coefficient matrix A is M-by-N. TAU is a vector of reals (the shifts) of length L. For a short demo run main.m

光伏电池模型，特别好用，建议有需要的参考一下，下载即可，原理清晰，可以在此基础上更新。(Photovoltaic cell model is particularly useful, it is recommended there is a need to refer to, you can download, clear principle, it can be updated on this basis.)

说明：  介绍了线性调频信号的概念，线性调频信号的时频特性描述及用MATLAB进行仿真(the characters of Chirp signal)

由给定高斯线型半高全宽，与洛伦兹线型半高全宽，计算对应的归一化的Voigt线型。(use the FWHM of Gaussin profile and Lorentz profile to caculate the voigt profile which is normalized by energy.)

使用傅里叶变换提取心电信号中的呼吸信号，已经调试通过(Fourier transform to extract the breathing signal ECG has been through debugging)

Digital Signal Processing High Pass Filter for Discrete Human and Animal Sounds from mixed voice