from a Р computer code[J]. Technometrics, 1979, 21(2): Р 239-245. Р[15] IMAN R L, HELTON J C, CAMPBELL J E. An approach Р to sensitivity analysis of computer models: part Р I-Introduction, input variable selection and preliminary Р variable assessment[J]. Journal of Quality Technology, Р 1981, 13(3):174. Р[16] EWERT R, SCHRÖDER W. Acoustic Perturbation Р Equations Based on Flow Decomposition via Source Р Filtering[J]. Journal of Computational Physics, 2003, Р 188(2):365. Р[17] LECOQ D, PÉZERAT C, THOMAS J, et al. Extraction Р of Acoustic Component of a Turbulent Flow Exciting a Р Plate by Inverting the Vibration Problem[J]. Journal of Р Sound and Vibration, 2014, 333(12): 2505-2519.