小波包分析提取振动信号中的特征频率，以及能量谱分析计算-wavelet packet analysis vibration signal from the characteristic frequency, and the energy spectrum analysis -Extraction of wavelet packet analysis in the vibration signal characteristic frequency, as well as the calculati

里面有MATLAB关于小波分析、小波包分析以及工程的应用实例，很实用-There are about MATLAB wavelet analysis, wavelet packet analysis and engineering application, it is practical