中文说明：添加噪声处理，是学习PCA特征提取的很好的学习资料，可以广泛的应用于数据预测及数据分析,分析了该信号的时域、频域、倒谱，循环谱等,数学方法是部分子空间法，采用了小波去噪的思想。
English Description：
Add noise to deal with, is learning PCA feature extraction of very good learning materials, and can be widely used in data forecasting and data analysis, analyzes the the signal in time domain and frequency domain, cepstrum, cyclic spectrum, mathematical method is part of the sub space method, the idea of using wavelet denoising.