小波包分析提取振动信号中的特征频率，STM32制作的MP3的全部资料，利用自然梯度算法。- Wavelet packet analysis to extract vibration signal characteristic frequency, STM32 all the information produced by the MP3, Use of natural gradient algorithm.

一个师兄的毕设，STM32制作的MP3的全部资料，这是一个好用的频偏估计算法的matlab仿真程序。- A complete set of brothers, STM32 all the information produced by the MP3, This is a useful frequency estimation algorithm matlab simulation program.