The invention relates to a method for probing by wave propagation, in which an incident wave is emitted into a medium (1) comprising diffusers (2) that can reflect the wave. Signals representing a reflected wave reverberated by the medium from the incident wave are captured, said captured signals being the sum of a simple diffusion component and a multiple diffusion component. The captured signalsare treated by separating the multiple diffusion component from the simple diffusion component.