Chapter-3_1

使用MATLAB实现主成分分析，可以去除数据间的共线性及对大量数据进行降维处理。(Using the matlab to realize the principal component analysis to remove the liner of the date and reduce the dimension of the large amont of the date. )

说明：  数值计算课后答案的解析，很有用的而且对上机超值(Numerical Analysis of after-school answer, very useful but on the machine value)

is-95前向链路通信系统仿真一个数据无线电的多接入方案，其用来发送声音，数据和在无线电话和蜂窝站点间发信号数据（如被拨的电话号码）。 (is-95 prior to link a data radio communication system simulation of multi-access program, which used to send voice, data and wireless phones and cellular sites in the signal between the data (such as by dial telephone number).)

系统辨识的模型阶次辨识，其中包括Hankel矩阵法，残差法，行列式法(System identification of model order identification, including Hankel matrix method, residual method, the determinant method)

基于matlab的加性高斯白噪声 源代码 直接用软件打开即可(Matlab-based additive white Gaussian noise)

清华老校歌，直接运行播放清华大学的老校歌，主函数是matlab中的sound,文件名和函数名要一致(The song of Tsinghua University)

小波分析，可直接使用。可用于气象数据，入门者方便使用(Wavelet analysis, can use directly. Can be used for meteorological data, even beginner ease of use)

NICAM就是双声道数字声技术，其应用范围及其广泛，最典型的应用便是电视广播附加双声道数字声技术，利用它进行立体声或双语广播，以充分利用电视频道的频谱资源。(NICAM728-digital two channel sound for terrestrial television)

Matlab controlled robot

说明：  matlab下KL变换,用于去除随机噪声(KL transform)