Turbulent flows, due to the presence of obstacles or turbulent boundary layers near the structure, generate vibrations and can be a major source of noise. This kind of excitation have two components: the aerodynamic and the acoustic parts respectively in the high and low wavenumbers. The vibrations and acoustic radiations of the wall are more sensitive to the acoustic component. Indeed, the wavelengths of the aerodynamic part are very small and they excite modes with low radiation. However, the aerodynamic part has a very high amplitude, so that the acoustic component becomes very difficult to assess by measurement. The study aims to use the Force Analysis Technique (FAT), also known by its french acronym RIFF (Résolution Inverse Filtrée Fenêtrée), to measure these excitations. In this work, the acoustic pressure identification is tested by performing a numerical experiment where excitation is obtained by a synthesis method of time signals by Cholesky decomposition of cross spectra matrices. Thanks to the wavenumber filtering of the Force Analysis Technique, the results show that the acoustic component can be extracted even if its energy level is very small with respect to that of the aerodynamic component.