PUBLIC ADDRESS SYSTEM

It is an electronic sound amplification and distribution system with a microphone, amplifier and loudspeakers, used to allow a person to address a large public for example for announcements of movements at large and noisy air and rail terminals or at a sports stadium.

The term is also used for systems which may additionally have a mixing console, and amplifiers and loudspeakers suitable for music as well as speech, used to reinforce a sound source, such as recorded music or a person giving a speech or distributing the sound throughout a venue or building.