chap2_4

利用MATLAB 仿真DTMF音频的产生及其解码的程序代码。很好！ (Simulation using MATLAB DTMF generation and decoding the audio code. Very good!)

空域滤波器一种--维纳滤波器，以《现代信号处理》（张贤达）书上所讲过程所写(Spatial filter one kind- Wiener filter to the "Modern Signal Processing" (Zhang XD) book written by the process of speaking)

说明：  传统时频分析方法，包含STFT等matlab算法(Traditional time-frequency analysis methods, including STFT and other matlab algorithms)

说明：  color image watermarking using DCT and DWT

用于进行声压转换的matlab文件，声压数据来源于ansys软件的计算后导出来的。(Used for sound pressure to convert matlab file, sound pressure data from the calculation software ansys guide out.)

利用matlab实现的最小二乘法的计算，可以利用在处理信号和进行数值计算的时候(Using matlab realize the least squares method of calculation can be utilized in signal processing and numerical calculation time)

本程序用小波包3层分解把信号分解成8个频段的信号。(The procedures used 3 layer wavelet packet decomposition of the signal into the eight-band signal.)

communication based files,contains programs about matlab,example programs

最小二乘是广义预测的基础知识，学习最小二乘有利于学习广义预测控制(Generalized least squares is predicted on the basis of knowledge, learning conducive to learning generalized least squares predictive control)

人工势场法进行机器人路径规划，能自己设置障碍物，和避障范围。(Artificial potential field method for robot path planning, obstacles, to set themselves up and obstacle avoidance.)