Fantom_fieldII

用几种函数实现傅里叶变换，变换后可输出图形(With several functions for Fourier transform, transform graphics output)

this code simulates a 4fuzzy PID cotroller for ball-baem system and 3 other systems.

说明：  经典图书Courant, Hilbert - Methods of Mathematical Physics Vol. 1 50年不倒的经典图书，值得一看，是学习数学物理方法的经典名著(Classic books Courant, Hilbert- Methods of Mathematical Physics Vol. 1 50 will not be brought down in the classic books, worth a visit is to study methods of mathematical physics classics)

ICA盲源分离方法，可以很快的分离混合信号，对初学者有很大的帮助。(ICA blind source separation methods, can quickly separate mixed signal, there is a great help for beginners.)

里面包含五个有关matlab的学习的资料，特别适合初学者使用。(a very good learning material of matlab learning.)

说明：  MATLAB语言是一种广泛应用于工程计算及数值分析领域的新型高级语言，自1984年由美国 MathWorks 公司推向市场以来，历经十多年的发展与竞争，现已成为国际公认的最优秀的工程应用开发环境。MATLAB功能强大、简单易学、编程效率高，深受广大科技工作者的欢迎(MATLAB language is a widely used engineering calculation and numerical analysis of the new high-level language, since the United States in 1984 by the MathWorks to market since the company, after ten years of development and competition, has become internationally recognized best engineering applications development environment. MATLAB powerful, easy to learn, programming efficiency, greatly welcomed by the vast numbers of scientific and technological workers)

technique d accès multiple CDMA (Code Division Multiple Access)

具有丰富的参数选项,小波包分析提取振动信号中的特征频率，高斯白噪声的生成程序。( It has a wealth of parameter options, Wavelet packet analysis to extract vibration signal characteristic frequency, Gaussian white noise generator.)

说明：  low-pass filter 让某一频率以下的信号分量通过，而对该频率以上的信号分量大大抑制的电容、电感与电阻等器件的组合装置。 (low-pass filter )

实现一个数字信号处理的仿真系统 。具有界面并实现以下功能：能产生（得到）并选择各种数字信号（sin、方波、三角波、语音、噪声及其叠加）；具有DFT和DCT变换功能，对各种信号进行变换；设计滤波器实现低通、高通、带通滤波，得到输出信号的频域特性和时间序列。(the realization of a digital signal processing simulation system. Requires interface and achieve the following functions: to produce (to be) and select a variety of digital signal (sin, square, triangle wave, voice, noise, and overlay)with DFT and DCT features a variety of signals transform Filter Design low pass, high pass, band pass filter, the output signal of the frequency domain to get the features and time series.)