音频信号通过LM386放大，主同步信号PSS在时域上的相关仿真，包括最小二乘法、SVM、神经网络、1_k近邻法。- LM386 audio signal amplification, PSS primary synchronization signal in the time domain simulation related, Including the least squares method, the SVM, neural networks, 1 _k neighbor method.