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This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. (This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious. )

matlab图像处理实例详解chap2——matlab基础(matlab image processing example explanation chap2- matlab basic)

This is another source code for speech recognition.. this is the voice active detection using energy detection

Matlab工程数学解题指导 电子书 详细介绍了Matlab中解决工程数学问题中的应用，有具体实例可以参考(Matlab mathematical problem solving engineering guide e-book introduces Matlab in solving mathematical problems in engineering applications, there are specific instances can reference)

蚁群算法是目前应用最广的智能算法之一，该程序应用蚁群算法求解最优路径(Ant colony algorithm is one of the most widely used intelligent algorithm, the program ant colony algorithm for optimal path)

计算每个IMF分量及最后一个剩余分量residual与原始信号的相关性;计算各IMF的方差贡献率;绘制FFT频谱(The correlation between each IMF component and the last residual component residual and the original signal is calculated; the variance contribution rate of each IMF is calculated; and the FFT spectrum is drawn.)

this is the simulik models of servo drive using matlab 7.1

ds algorithm motion estimation

全带宽服务器（TBS）simulink仿真(Full bandwidth server simulink simulation)

matlab最全的命令大全，初学者或则matlab学习的同志可以根据此大全了解所有的命令(matlab command Daquan most complete beginners or the matlab learning comrades can understand all this command Daquan)