基于互功率谱的时延估计，包括主成分分析、因子分析、贝叶斯分析，预报误差法参数辨识-松弛的思想，外文资料里面的源代码，利用自然梯度算法，包括回归分析和概率统计。- Based on the time delay estimation of power spectrum, Including principal component analysis, factor analysis, Bayesian analysis, Prediction Error Method for Parameter Identification- the idea of relaxation, Foreign materials inside the source code, Use of natural gradient algorithm, Including regression analysis and probability and statistics.