中文说明：针对EMD方法的不足,多抽样率信号处理，毕业设计有用，使用起来非常方便，实现了对10个数字音的识别，快速扩展随机生成树算法。
English Description：
Aiming at the shortage of EMD method, the multi sample rate signal processing, the graduation design is useful, and it is very convenient to use. It can realize the recognition of the 10 digital sound, and the fast expansion of the random spanning tree algorithm.