Public address system is an electronic amplification system used as a communication system in public areas a simple PA (public address) system consists of a microphone, an amplifier and one or more speakers. The goal of a PA system is to provide “public address“, or a way to transmit audio communication to a group with-in the Building or a campus which contains Emergency Alerts, Timely Messages, Announcements etc. This transmission can begin with a microphone, which is a device that can assist in magnifying an audio source volume. A microphone is classified as a device that transforms sound into an electrical signal.
