对信号进行频谱分析及滤波，包括主成分分析、因子分析、贝叶斯分析，计算加权加速度,应用小区域方差对比，程序简单，用于时频分析算法。- The signal spectral analysis and filtering, Including principal component analysis, factor analysis, Bayesian analysis, Weighted acceleration, Application of small area variance comparison, simple procedures, For time-frequency analysis algorithm.