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（1）在MATLAB环境下编写FFT算法（不调用系统现有函数）； （2）实现对选定图片进行FFT计算、还原（IFFT计算），并与系统FFT函数做对比，进行分析； （3）设计GUI界面。((1) the preparation of the FFT algorithm (do not call the system existing function) in MATLAB environment (2) to achieve the selected image to the FFT calculation, reduction (IFFT computing), and FFT functions to do comparison with the system for analysis (3) Design GUI interface.)

以最优的窗宽进行核密度估计，误差小，比matlab自带程序精确(To the best window width nuclear density estimation, a small error, accurate than matlab own procedures)

一个粒子群算法实例，介绍粒子群算法的编程技巧(A particle swarm algorithm instance, introduced particle swarm algorithm programming skills)

DTMF encoder/decoder using Goertzel algorithm and Biquad filtering

通过边界集中识别图像形状特性，并返回数值(Images by identifying the boundary shape characteristics of centralized and return values)

适合初学者的matlab数值教程，简单介绍了matlab中数值的表示方法(Numerical matlab tutorial for beginners, a brief numerical representation in matlab)

Alan Variance Calculation

PSO优化BP的源程序,加上作者的注释.(BP PSO optimization of the source, together with the author' s comments.)

Q函数、互补误差函数定义，以及之间的关系、matlab实现Q函数(Q function, complementary error function is defined, and the relationship between, matlab Q function)

基于MATLAB的语音信号描述，描述清楚，系统的描述了语音检测处理的方法，具有较高的参考价值。(MATLAB voice signal description, based on the clear description, system description method of speech detection processing, has high reference value. )