Public Address System
What is Public Address System?
A public address system (PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or signal. PA systems are used in any public location that requires that an announcer, performer, etc. be sufficiently audible at a distance or over a large area. Common uses include sporting venues, public transportation announcements, concerts, and political rallies.
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