kpca

文章展示了基于高斯混合模型的语音频谱预测方法。频谱预测可能在传包过程中预防丢包这方面起到大作用。期望最大化算法用两倍或三倍的连续语音因素来测试模型。模型被用来设计第一，儿等指令预测量。预测表用频谱分配状态来估计并和一个简单的参考模型对比。最好的预测表得到一个平均频率扭曲值是0.46dB小于参考模型(This paper presents methods for speech spectrum prediction based on Gaussian mixture models. Spectrum prediction may be useful in a packet transmission system where the sensitivity to packet losses is a major problem. Models of speech are trained by the Expectation Maximization algorithm using pairs, triples etc. of consecutive cepstral vectors. The models are used to design first, second etc. order predictors. The prediction schemes are evaluated using the spectral distortion criterion and compared to a simple reference method. The best prediction scheme obtains an average spectral distortion that is 0.46 dB less than for the reference method. )

PID控制算法的MATLAB仿真其中参数,Kp,Ki,Kd分别为PID控制器的比例、微分和积分参数。(PID control algorithm of the MATLAB simulation in which the parameters, Kp, Ki, Kd are the proportion of PID controller, differential and integral parameters.)

说明：  MATLAB有限元分析与应用，适用于matlab编程研究人员(Finite element analysis and application of MATLAB, matlab Programming for Researchers)

带有偏振模色散的光纤系统中基于lms算法的前馈均衡补偿系统(Optical fiber with polarization mode dispersion system lms algorithm based on feed-forward compensation system balance)

将滤波的信号叠加再求平均并计算滤波前后的标准差(Averaging the signal superposition and calculate the standard deviation)

有关再分析数据的MK检验MATLAB程序(test to analyze the data)

对信号进行小波变化，找出QRS波形，并利用不同方式进行消噪，从而用图形比较效果(It find the QRS wave of an input signal using wavelet transform and depress noise using several ways,so compare their figure.)

求解高斯积分点及其权重的计算程序。程序计算一维、二维、三维的高斯点及其权值，用于数值积分。原来写的一个有限元程序，所以有能力给6节点的三角形单元的积分点(A program for solving Gauss integral points and their weights is presented.Program calculates the gauss points for 1-D,2-D,3-D along with their weights for use in numerical integration. Originally written for a Finite Element Program so has the capability to give integration points for a 6-node Triangle element)

说明：  通信系统方面的matlab书籍,对通信系统相关方面都有涉及,是用matlab仿真通信系统的教材.(Communication systems matlab books related to aspects of the communication system involved is the simulation of communication systems using matlab materials)

三相逆变桥式电路的matlab仿真电路图，主电路图，仿真模型(Matlab simulation circuit of the three-phase inverter bridge circuit, the main circuit simulation model)