The Operational Modal Analysis (OMA) technique is a methodology very often applied for the identification of dynamic systems when the input signal is unknown. The applied methodology is based on a technique to estimate the frequency response functions and extract the modal parameters using only the structural dynamic response data. without assuming the knowledge of the excitation forc... https://www.ngetikin.com/limited-buy-NHL-Dallas-Stars-Lineup-iPhone-13-Skin-p119122-great-pick/