math1

对要发送的序列进行上变频，上变频到21MHz后进行发送。(change the frequence uop to the one that suit for transmission,which here is 21MHz.)

采用Matlab工具箱函数建立神经网络，对一些基本的神经网络参数进行了说明，深入了解参考Matlab帮助文档。 (Using Matlab toolbox functions to establish neural networks, some of the basic neural network parameters are described to understand the reference to Matlab help documentation.)

this is a FDTD with PML ABC for infinite linear source...

信号发生器和电子琴。其中电子琴有36个按键，跨3个八度，分别为小字组、小字一组和小字二组，可以播放含基音、泛音和包络的声音(Signal generator and keyboard. Keyboard comes with 36 keys which spans three octaves, respectively, for the small print group, the small print of a group and the small print of two groups, containing the pitch, overtones, and the sound envelope can play)

该程序实现了产生n进制随机符号序列，符号数为len(The realization of the program to generate N binary random sequence of symbols, symbols for len)

基于matlab的模拟退火算法求解旅行商问题的实现。简单 方便 好用，解压后就可使用(Matlab simulated annealing algorithm based on traveling salesman problem implementation. Simple easy to use, can use after decompression)

基于matlab的DCT图像压缩算法 （压缩效果对比）(DCT-based image compression algorithm matlab )

用MATLAB编程实现巴特沃兹低通、带通滤波器(Using MATLAB programming巴特沃兹low-pass, band-pass filter)

Voicebox is a toolbox for speech analysis and widely used in this field.

This code calculates the 1 D FDFD for a TEM Electromagnetic Wave for a half space medium