Black box devices used in planes record flight information which can be analyzed to determine the cause of an incident or accident. There are two types of black boxes: Cockpit Voice Recorders used to record conversations in the cockpit, and Flight Data Recorders used to record flight information.
The system of the phonic recording appears interesting: the reproduction of this object is there only to receive waves in the exhibition space. It is dumb its function is to occupy the space like the installation itself.