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Matlab的FFT算法程序 里面有基2时间抽取的FFT 还有基2频率抽取的FFT (Matlab' s FFT algorithm which has taken the time base 2 radix-2 FFT have taken the FFT frequency)

image aliasing matlab code

针对非圆信号DOA估计问题,提出了一种基于实值特征值分解 (Eigenvalue decomposition,EVD)的求根MUSIC算法.首先利用非圆信号为实值信号的特点,将阵列上的接收数据及其共轭用欧拉公式转换为实值正弦与 余弦数据,然后将正弦与余弦数据进行串联,从而扩展了数据维数.由于采用实值矩阵的EVD,因此在EVD阶段的运算量简化为复值EVD的1/4.根据 EVD后获得的信号与噪声子空间的特点,对噪声子空间和导向矩阵进行重构以便于可以使用求根MUSIC算法获取对DOA的估计.仿真实验验证了本文算法的 有效性(For the estimation of noncircular signals of DOA, proposes a decomposition value based on real valued features (Eigenvalue decomposition, EVD) the root MUSIC algorithm. Firstly, characteristics of non circular signals for real valued signals, the array data and its conjugate with the Euler formula into real value of sine and cosine and sine and cosine data. The data series, thus expanding the dimension of the data. Because of the use of real valued matrix computation in EVD, so the EVD stage was simplified as a complex valued EVD 1/4. according to the characteristics of signal and noise subspace is obtained after EVD, the noise subspace and orientation matrix reconstruction in order to facilitate the use of DOA can obtain the estimated root MUSIC the algorithm. The simulation results verify the effectiveness of the proposed algorithm)

主要是用于产生cdma通信信道当中相关内容(Is mainly used to produce cdma communication channel among the relevant content)

特征分析对于声音信号的处理非常有用，希望这个能对大家有用(Feature Analysis for the audio signal processing is very useful, hope this will be useful to everyone)

This FDTD 1D simulation based on Dennis Sullivan book s. Wave propagation in vacuum background and penetrates Dielectric media type II.

三维时域有限差分程序，cpml吸收边界，介质表面采用网格均分技术(Three-dimensional finite-difference time-domain algorithm, CPML absorbing boundary, sharing media surface using grid technology)

gui (graphical user interface) for face recognition base on pca (eigenface)

Efficient polyphase filter implementation

MATLAB Finit Element methode fdtd