kyssjuet

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. )

MP3压缩域的音频水印的研究 基于压缩域的音频信息隐藏技术，主要研究在MP3等格式的音频文件中嵌入秘密信息达到版权保护的目的。(a audio watermarking based on modified discrete cosine transform ofmpeg/ audio layer III)

此程序的功能是用自相关法求使信号s均方预测误差为最小的预测系数 算法为Levinson-Durbin快速递推算法 (The function of this procedure is signal s with autocorrelation method for the prediction of the minimum mean square prediction error coefficient algorithm for Levinson- Durbin quick recursion method)

LDA方法是一种对数据进行线性分解的降维方法(LDA method is a kind of linear decomposition of data dimension reduction method)

扩展卡尔曼滤波算法用来实现目标的定位于跟踪(Extended Kalman filter algorithm is used to achieve the goal of positioning tracking)

利用鱼群算法优化BP神经网络权值，该代码可以直接运行。(Fish swarm algorithm is used to optimize the weight of BP neural network, and the code can run directly.)

在vc6.0z中开发的数学矩阵类，用来操控矩阵相关编程，功能还待完善，但一定程度上，是我们不用再去搞C++与matlab的混编(to control simple calculation works in mathmetical array works with compile language just based c++ in the vc6.0 enviroment.)

自编功率谱估计的程序，可以计算功率谱，很有效(zibiangonglvpugujidechengxu，keyijisuangonglvpu)

Torque motor induced back-emf calculation (Matlab with user-friendly GUI)

ARMA模型谱估计 通过观测信号来观察信号的功率谱密度(ARMA model spectrum estimation)