These are rooms with specific requirements regarding acoustic behavior, used as testing chambers for equipment or as laboratories for experimentation and research.

Sizing is carried out by starting with walls with high sound-absorbing properties and paying attention to the reverberating characteristics of the surfaces.

Special attention is given to the modes of diffusion and aspiration of air treatment systems, using silencer ducts and special grilles.

Likewise, doors, any windows, lighting fixtures should not constitute elements of alteration of the acoustic behavior.