分析了该信号的时域、频域、倒谱，循环谱等,isodata 迭代自组织的数据分析，结合PCA的尺度不变特征变换(SIFT)算法。- Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Isodata iterative self-organizing data analysis, Combined with PCA scale invariant feature transform (SIFT) algorithm.