真的是一个好程序，是机器学习的例程，STM32制作的MP3的全部资料。- Really is a good program, Machine learning routines, STM32 all the information produced by the MP3.

AHP层次分析法计算判断矩阵的最大特征值,是学习PCA特征提取的很好的学习资料，STM32制作的MP3的全部资料。- Calculate the maximum eigenvalue judgment matrix of AHP, Is a good learning materials to learn PCA feature extraction, STM32 all the information produced by the MP3.