1. A method for determining an averaged frequency-dependent transfer function for a linear time-invariant system by means of an evaluation device ( 3 ), wherein the method comprises: providing frequency-dependent reference signals derived from excitations applied to a linear time-invariant system, providing frequency-dependent measuring signals for the linear time-invariant system which are associated with the frequency-dependent reference signals, and determining an averaged frequency-dependent transfer function for the linear time-invariant system, in that using signal deconvolution of associated measuring signals and reference signals, frequency-dependent transfer functions are determined and the frequency-dependent transfer functions are averaged, wherein when determining the averaged transfer function at least a part of the determined frequency-dependent transfer functions is included in the averaging corresponding to a respectively associated frequency-dependent weighting.