pls

matlab实现jpeg编解码，对学习jpegde 很有帮助(jpeg codec matlab implementation of the study jpegde helpful)

LZW text compresion with GUI..input the text compress it with LZW method

时频分析的经典程序集，与《Matlab 时频分析与应用》配套使用。(Time-frequency analysis of the classic assembly with " Matlab time-frequency analysis and application of" supporting the use.)

结构分析的有限元与matlab一书中的源代码第四部分，二维线弹性有限元(originnl programs in the book of finite element method in structure analyses and matlab programming part 4)

this is the modulation techniques in matlab

说明：  基于matlab的三维重建技术与实现，该技术可以完美重建三维图像(three-dimensional reconstruction)

Speech Enhancement Using Spectral Substraction

粒子群改进算法，有助于学生学习,可以在此基础上改进(Improved particle swarm algorithm to help students to learn, you can improve on this basis)

qr factorization using hh algorithm colum pivioting

it is matlab code and is for systems and signals by porakis that is very good for all