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一种主成分分析的matlab源代码！外国人写的，不错！(A principal component analysis of the matlab source code! Writing of foreigners, it is true!)

局部放电试验所采集的信号中往往混有白噪声、周期干扰信号去除。此处采用常用db系列小波中的db6小波进行9尺度的多分辨分解后，根据白噪声能量特性，估算各尺度的阈值大小，采用硬值进行处理，后进行重构。(Partial discharge test of the signal collected is often mixed with white noise, periodic interference signal removal. Here the use of commonly used wavelet db Series DB6 wavelet carried out in the 9-scale multiresolution decomposition, based on the energy characteristics of white noise to estimate the scale threshold size, the use of hard-value deal, after the remodeling.)

Capon提出MVDR（Minimum Variance Distortionless Response）高分辩方位估计方法以来，MVDR以其简单的算法、良好的性能得到了广泛关注，是一种具有良好实用前景的数字波束形成方法。(Capon proposed MVDR (Minimum Variance Distortionless Response) high resolution DOA estimation methods since, MVDR algorithm with its easy, good performance has been widespread public concern, is a good practical prospect of digital beamforming methods.)

利用广义相关法求时间延迟估计，可以用用在TDOA定位中(Generalized Correlation Method Using Time Delay Estimation)

这是一个基于瞬时无功功率理论的有源电力滤波器，是在matlab的simulink中搭建而成(This is an active power filter based on instantaneous reactive power theory, the structure which is in the simulink matlab)

程序代码说明 P0610：神经网络的实例(Procedure Code Description P0610: examples of neural network)

Algorithm PLL for inverter dc-AC

用于转子故障振动，采集信号后，用小波包方法对振动信号进行频谱分析，比傅立叶变换更细化。(Spectrum analysis of vibration signal by wavelet packet method)

Avi read,Cut detection from video

说明：  经典Davey著作中 ldpc部分仿真程序(classic works part ldpc Simulation Program)