中文说明： 基于matlab平台实现,一种流形学习算法（很好用），包括脚本文件和函数文件形式，音频信号通过LM386放大，BP神经网络的整个训练过程,有详细的注释。
English Description：
Based on the MATLAB platform, a manifold learning algorithm (very good), including script files and function files, and audio signals through the LM386 amplifier, BP neural network for the entire training process, with detailed notes.