srg11

it is used for the recovering speech from noise

This is a good example of how to create amplitude modulation with sampling frequency

差分进化算法，用于优化计算，求解优化问题(DE algorithms)

matlab实现灰度图像装换成彩色图像，可以使用先验图像，也可不用，不用的话自动使用热色系(use matlab to change Color image into gray image)

基于matlab的图像二值转换程序，在Matlab上可以运行(Matlab binary image based on the conversion process, can be run in Matlab)

deinterlace去隔行算法，将隔行序列变为逐行(deinterlacing algorithms deinterlace interlaced sequences into progressive)

Queuing theory it is a simulation for M/M/1 queue and find its state probabilites in steady state for n=5 and find expected delay time

In a normal communication channel, it is often desirable to concentrate the information in as narrow a region of the frequency spectrum as possible in order to conserve available bandwidth and to reduce power. The basic spread spectrum technique, on the other hand, is designed to encode a stream of information by spreading the encoded data across as much of the frequency spectrum as possible. This allows the signal reception, even if there is interference on some frequencies. While there are many variations on spread spectrum communication, we concentrated on Direct Sequence Spread Spectrum encoding (DSSS). The DSSS method spreads the signal by multiplying it by a chip, a maximal length pseudorandom sequence modulated at a known rate. Since the host signals are in discrete-time format, we can use the sampling rate as the chip rate for coding.

关于遗传算法的matlab 程序代码，或许对有些这方面的同仁有用(on Genetic Algorithms Matlab code, perhaps some of us in this regard useful)

threshold is a key technique for the segmentation and edge detection in an image for image processing. Here in this file the threshold is on the based of the maximum entropy of an image using shannon entropy method.