Public Addressable System

An electrical sound amplification and distribution system that includes loudspeakers, an amplifier, and a microphone that enables a speaker to address a large audience is known as a Public Addressable System (PA System). With a fire alarm system, it can be utilized as a voice evacuation system. However, a voice alarm is more than just a fire alarm panel-connected public address system.

Because a voice alarm system only activates when necessary in an emergency, it is constantly under close observation. In an emergency, the fire alarm panel immediately activates it. The system will notify others and evacuate locations that are under imminent danger. Public announcements are frequently made using PA systems with speakers.

The speaker

Speaker An electro-acoustic transducer that generates sound in response to an electrical audio signal input is called a loudspeaker (or “speaker”). criteria for figuring out how many loudspeakers are needed. In order to minimize the masking effect of noise over the signal, the number of loudspeakers, their placement, height, direction, and power input must be chosen with the goal of preserving the intensity of the sound that is reproduced above the local noise level. Two varieties of speakers are available:

Amplifier

Within PA equipment, an amplifier is a device that converts microphones’ low-level input signals into high-level output signals with the required output power. which, via an appropriate link, will be sent to the loudspeakers at the output stage.

There are a variety of speakers on the market.

For instance, 50w, 100w, I 20w, 240w, 480w, 500w, 1000w, and so forth.

The controller

There are two types of controllers available in the market.

Mic

A microphone, sometimes referred to as a “mic” or “mike,” is a transducer that transforms sound into an electrical signal. There are numerous uses for microphones, including phones, hearing aids, public address systems for public gatherings and concerts, film production, live and recorded audio engineering, and sound

recording, radio and television transmission, two-way radios, megaphones, and computers for voice recording, speech recognition, VolP, and non-acoustic uses like knock or ultrasonic sensors.

Call Station

Call Station is a system in which can decide the area where we need to do the
announcement.