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说明：  m序列的产生方法的源代码 matlab仿真 希望初学者有用(m sequence generator method )

在matlab环境下，使用HMM对语音信息进行处理！(In the matlab environment, the use of HMM for speech information processing!)

提取灰度图的边界，输入参数是灰度图，输出参数是灰度图边界的坐标(Extract grayscale borders, the input parameter is grayscale, the output parameters are the coordinates of the border grayscale)

Matlab高级学习教程：熟悉基本矩阵运算、作图等便可开始此教程。(Matlab Advanced Learning Tutorial: familiar with the basic matrix operations, mapping, etc. can start this tutorial.)

利用matlab 和 差分方法求解非线性方程(Difference Methods Partial Differential Equations)

sift matching: System will automatically delete the directory of debug and release, so please do not put files on these two directory.

光纤布拉格光栅反射谱，时延和色散。对学习FBG相关谱理论还是有帮助的。(The reflection spectra and delay of FBG)

this is file for optimization and searching.

数字信号解调（接收端），包括：“删除干扰噪声信号”，“从载波信号中提取原始信号”，“滤波器滤波”，“用PSK解码，把图形变成数字信号”。(Digital signal demodulator (receiver), including: " to remove interference noise signal," " carrier signal extracted from the original signal," " filter" , " with PSK decoding, graphics put into a digital signal." )

matlab实例clearN=100f=zeros(50,50) f(15:35,23:28)=1 figure(1)imshow(f, notruesize )F=fft2(f,N,N) F2=fftshift(abs(F)) figure(2)x=1:N y=1:N mesh(x,y,F2(x,y)) colormap(gray) colorbar(matlab)