four bar

给出了PSNR,MSE的源码，及PSNR的应用例子(Application examples given PSNR, the source of the MSE and PSNR)

RBF neural network with an example

可以实现激光谐振腔的自再现；有利于了解激光腔的原理(Laser resonator can be achieved self-reproduction is conducive to understanding the principle of laser cavity)

各种数字波束形成算法。如最小方差无畸变响应MVDR,LCMV等。(A variety of digital beamforming algorithm. Such as minimum variance distortion-free response MVDR, LCMV and so on.)

插值与拟合试验，matlab，希望对大家有用(Interpolation and fitting test, matlab)

退火粒子群优化算法（SAPSO），matlab代码，仅供学习(Annealing particle swarm optimization (SAPSO), matlab code, only to learn)

阈值隐藏图像，图像通过阈值方式，把小图像隐藏到大图当中，实现信息隐藏，用于二值图像的信息隐藏(Threshold hidden image, the image by the threshold method, the small images to enlarge them hidden, to achieve information hiding for binary image information hiding)

说明：  天线和电磁波计算的书籍，环境为MATLAB.(Antennas and electromagnetic wave calculation of books on the environment, MATLAB.)

说明：  用图表表示出语音信号的语音信号时域波形，短时幅值和短时过零率，短时能量和短时过零率，短时幅值和短时能量，短时能量和短时幅值--hamming window。(Graphically show the voice signal voice signal waveform, amplitude and short-zero short-term rates, short-time energy and short-term zero crossing rate, short-term amplitude and short-term energy, short-term and short-term rate of energy value- hamming window.)

this code is for calculation the field distribution in 2D photonic crystals with FDTD method