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AR模型，用修正协方差法求谱估计，简单实用。(AR model, with amendments covariance spectral estimation method, simple and practical.)

说明：  用PSO求解函数的最大值，有图形界面，适合初学者学习。(a function to find the Max.Value using PSOA, good structure and nice interface.)

音频压缩matlab代码，使用时先将6段代码分别编译，在command窗口中运行main函数即可。(Audio compression matlab code, use the first six sections of the code were compiled, the main function can be run in a command window.)

通过对基4快速傅里叶的介绍，使用matlab实现了基4快速傅里叶变化(Through the radix-4 Fast Fourier presentation, using matlab to achieve a base four fast Fourier transform)

feed forward neural network with genetic algorithm Training

有关matlab的遗传算法工具箱，里面含有若干实例和程序代码，是由英国大学研发的(Matlab genetic algorithm toolbox, which contains a number of examples and code, developed by the University of British)

批量读取nc数据，求nc数据月平均，IDW插值，点数据转shapefile(Read the nc data in batches.)

MATLAB教程，包括MATLAB系统语言简介，图形功能，图形对象控制，MATLAB接口，GUI程序设计，小波分析工具包等内容。(MATLAB Guide, including the MATLAB system language profiles, graphics functions, graphics object control, MATLAB Interface, GUI programming, such as wavelet analysis toolkit content.)

Why Functional Programming matters

说明：  在matlab中实现巴特沃斯低通滤波器as=70 Fs=15000 Fp=9000 (butterworth lowpass filter as=70 Fs=15000 Fp=9000 )