独立成分分析算法降低原始数据噪声，使用大量的有限元法求解偏微分方程，分析了该信号的时域、频域、倒谱，循环谱等。- Independent component analysis algorithm reduces the raw data noise, Using a large number of finite element method to solve partial differential equations, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc.