信号的稀疏分解，OMP算法实现

Calculation of spectral characteristic of 1D PC as a function of refractive index of the layer.

this function is used to get formant frequencies and vocal models for one vowel and one speaker code is correctly commented to take in one trial, can be expanded to five by uncommenting

说明：  贪吃蛇MATLAB m文件 snake.m

将三次样条与五次样条差值结合，满足起始和结束速度，加速度均为零。

说明：  cutting algorith for branch and cut

Grafica helice, creada en matlab es una grafica de una funcion que hace que una forma de heclice es muy practica y divertida

OFDM-matlab完美程序，经测试绝对能用(OFDM-matlab)

考虑到不平衡电网条件下，传统锁相环的局限性，这里比较了几种基于正负序分离的锁相环着重基于陷波器的提取方式(Taking into account the unbalanced grid conditions, the limitations of the traditional PLL, where positive and negative sequence based on comparison of several separate PLL trap of focusing on ways to extract)

pso算法描述，使用pso优化BP神经网络算法，该代码为基于PSO和BP网络的预测(The PSO algorithm is described, and the BP neural network algorithm is optimized by pso. The code is based on the prediction of PSO and BP network.)

陈式混沌系统的解法，吸引子、时序、功率谱、庞加莱图、分叉图等(The solution of Chen type chaotic system, attractor, timing, power spectrum, Poincare diagram, bifurcation diagram, etc.)