小波包分析提取振动信号中的特征频率，通过matlab代码，正确率可以达到98％。- Wavelet packet analysis to extract vibration signal characteristic frequency, By matlab code, Accuracy can reach 98 .

通过matlab代码，小波包分析提取振动信号中的特征频率，可以得到很精确的幅值、频率、相位估计。- By matlab code, Wavelet packet analysis to extract vibration signal characteristic frequency, You can get a very accurate amplitude, frequency, phase estimation.

代码给出了3种不同求解小波包分解能量的方法，有详细注释(The code gives 3 different methods to solve the decomposition energy of the wavelet packet, with detailed annotations)

小波包及能量频谱的MATLab算法，相关代码及源程序(Matlab algorithm of wavelet packet and energy spectrum, relevant code and source program)