中文说明： 实现了对10个数字音的识别程序旋转机械二维全息谱计算，分数阶傅里叶变换计算方面,利用matlab针对图像进行马氏距离计算 ,这是一个好用的频偏估计算法的matlab仿真程序,小波包分析提取振动信号中的特征频率。
English Description：
Realize the 10 digital sound procedure for the identification of rotating machinery two-dimensional holographic spectrum calculation, fractional Fourier transform calculation, using MATLAB to calculate the Mahalanobis distance for image, this is a good use of frequency offset estimation algorithm matlab simulation program, wavelet packet analysis to extract the characteristic frequency of the signal of vibration.