1. A method for characterization of vibrational and acoustic transfer path data of a physical system, the physical system comprising at least one path input point and at least one response point, the method comprising the steps of: receiving in-situ path input data for at least one path input point and/or response data for at least one response point of the physical system, wherein the path input data and/or response data are operational data measured directly at the physical system during operation; measuring and/or simulating at least one physical system response function (SRF) between the at least one path input point and the at least one response point; and identifying at least one parametric load model characterizing structural and acoustic loads acting on the physical system as a function of said path input data through the at least one response point during operation of the physical system, wherein the at least one parametric load model is identified by estimating the parametric load model directly from at least one of the path input data and the response data by using a single degree of freedom mount stiffness model in combination with the at least one SRF for the structural load and using a constant point mobility model in combination with the at least one SRF for the acoustic load.