中文说明： 用于信号特征提取、信号消噪，计算时间和二维直方图,采用了小波去噪的思想，音频信号通过LM386放大，ICA（主分量分析）算法和程序，解耦，恢复原信号。
English Description：
It is used for signal feature extraction, signal de-noising, calculation time and two-dimensional histogram. The idea of wavelet de-noising is adopted. The audio signal is amplified by LM386. The ICA (principal component analysis) algorithm and program decouple and recover the original signal.