ms_segmenter

用MATLAB实现的基4FFT算法的程序，输入一个长度为16的序列，得到DFT的频谱(Implemented with the MATLAB-based algorithm 4FFT program, enter a sequence of length 16 obtained DFT spectrum)

三种实现方式，采用MATLAB编程语言，一种是法国研究者设计的G Rilling 2007 另一种是MATLAB文件交换中心由Alan Tan开发的plot_hht程序包，第三种是台湾中央大学数据研究中心提供的EEMD包。 其中，我使用了plot_hht程序包，其使用了三个终止条件，驻留分量的单调性，极值点与零点的个数相差不超过1，还有黄锷1998经典文献提出的 SD>0.1，单调性的判断，并不是去判定驻留分量是否是单调函数，而是当曲线是双曲线时，循环结束，由于没有考虑端点效应，程序比较简洁，好读懂，大家 学习HHT可以从这个程序包入手，在此抛砖引玉，希冀有人能比较这三种不同的算法的性能和时间复杂度，以及对各种信号的适应性。(3 of hht method)

电机的MATLAB仿真，包括步进电机，同步电机，直流电机的仿真源代码。内容全面(Motor MATLAB simulation, simulation source code, including stepper motors, synchronous motors, DC motors. Comprehensive)

ACTIVLEV Measure active speech levelin voice commands

Algorithm Collections for Digital Signal Processing Applications using Matlab - E.S. Gopi

DistMesh giving a singular FEM matrix?(Hi Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D: rho_1 < rho < rho_2 where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition. Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used: Circle with hole rABC=1.5 rCyl=0.5 fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl) fd=inline(fdstring, p ) box=[-2,-2 2,2] [p,N]=distmesh2d(fd,@huniform,0.04,box,[]) I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)

说明：  实现磁盘级文件读写，穿透还原。实现磁盘级文件读写，穿透还原。(Achieve disk-level file reading and writing, through reduction. Achieve disk-level file reading and writing, through reduction.)

画duffing方程的相图，不能保证正确，请大家斟酌使用。欢迎交流。(The phase diagram drawn duffing equation, can not guarantee correct, please use discretion. Welcome to exchange.)

solution of multivariable non linear equation by LU decomposition method

matlab算法第10章内容其它部分陆续上传中请稍后(matlab algorithm for the content of other parts of Chapter 10 in succession, please upload later)