public address system - definição. O que é public address system. Significado, conceito
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O que (quem) é public address system - definição

ELECTRONIC ACOUSTIC SYSTEM FOR DELIVERING AUDIO TO A LARGE AUDIENCE OR AREA
PA system; Public Address system; Vocal PA systems; Public Address; P.A. System; Public-Address; Public address systems; The pa system; Intercom system (school); PA systems; Operatic school PA; Public announcement; Public address; PA speaker; PA SYSTEM; P/A system; Educational Audio in Schools - Centralized Sound System; Public-address system
  • A woman using a small handheld electric megaphone at a demonstration in Portugal. Electric megaphones use a type of [[horn loudspeaker]] called a ''reflex'' or ''reentrant horn''.
  • horn]]. It produced far more volume from a given amplifier than a cone speaker.  Horns were used in virtually all early PA systems, and are still used in most systems, at least for the high-range tweeters.
  • abbr=on}} cigarette lighter for scale
  • [[Horn loudspeaker]]s are often used to broadcast sound in outdoor locations.
  • A [[line array]] speaker system and subwoofer cabinets at a live music concert
  • Bank station]]
  • A late 19th-century speaking trumpet used by [[firefighter]]s
  • Public address system in an old [[high school]]
  • Public address system consisting of amplifiers, mixers, and routers for [[Gatwick Airport]] in London.
  • Rear panel of a medium sized PA system, positioned at one side of the stage at a concert of the musical group ''[[Dead Can Dance]]'' in 2022, the size being about 3 m from left to right. The setup includes the [[mixing console]] for the [[sound engineer]] (operating interface with slide controls etc. on the rear) and also the [[power amplifier]]s with loudspeaker cables, not in the picture are only the loudspeaker systems distributed around the stage.
  • This small venue's stage shows a typical PA system.

public address system         
(public address systems)
A public address system is a set of electrical equipment which allows someone's voice, or music, to be heard throughout a large building or area. The abbreviation PA
is also used.
N-COUNT
Public address system         
A public address system (or 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 recorded sound or music.
public address system         
¦ noun a system of microphones, amplifiers, and loudspeakers used to amplify speech or music.

Wikipédia

Public address system

A public address system (or 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 recorded sound or music. PA systems are used in any public venue that requires that an announcer, performer, etc. be sufficiently audible at a distance or over a large area. Typical applications include sports stadiums, public transportation vehicles and facilities, and live or recorded music venues and events. A PA system may include multiple microphones or other sound sources, a mixing console to combine and modify multiple sources, and multiple amplifiers and loudspeakers for louder volume or wider distribution.

Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. PA systems with many speakers are widely used to make announcements in public, institutional and commercial buildings and locations—such as schools, stadiums, and passenger vessels and aircraft. Intercom systems, installed in many buildings, have both speakers throughout a building, and microphones in many rooms so occupants can respond to announcements. PA and Intercom systems are commonly used as part of an emergency communication system.

The term sound reinforcement system generally means a PA system used specifically for live music or other performances. In Britain any PA system is sometimes colloquially referred to as a Tannoy, after the company of that name, now owned by TC Electronic Group, which supplied many of the PA systems used previously in Britain.

Exemplos do corpo de texto para public address system
1. Dynamo!" and obscenities over the train‘s public address system.
2. "Hosni Mubarak ala tul," some wshouted, using a public address system they brought along.
3. Gone was the usual announcement of the president‘s presence over the public address system.
4. An announcement came over the public address system telling gamblers the casino was closing.
5. "We need to have a public–address system." Officer Kukreti chided the merchants.