In the construction of a film, image and sound are inseparable. For thirty years, Claudine Nougaret and Raymond Depardon have been making films together, they are two at the helm. Raymond Depardon with the image, Claudine Nougaret with the sound. But the sound takes on an extraordinary dimension. Freeing the listener is freeing the other person's speech. The words of the internees, the peasants, the convicts, keeping track of dialects that are about to die out, freeing a space to make them heard. Claudine Nougaret and Raymond Depardon have placed this aesthetic, political and even technical requirement at the heart of their documentary work. With films such as "10e chambre, instants d'audience" or "Profiles paysans, le quotidien", they have travelled through silent places to be able to "Give" the floor. Archives, photos from film shoots and posters documenting their journey are presented in an original exhibition following the donation of their film and sound archives to the BnF. Devices (cameras, recorders, microphones, etc.) illustrate the evolution of filming and sound recording techniques and show the constant relationship between image and sound. The technique becomes a manifesto and a toolbox, making Depardon and Nougaret's cinematographic work an indispensable work.