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維基百科中是這麼說的
A public address system (PA system) is an electronic amplification system with a mixer, amplifier and loudspeakers, used to reinforce a sound source, e.g., a person giving a speech, a DJ playing prerecorded music, and distributing the sound throughout a venue or building.
Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars. PA systems with a larger number of speakers are widely used in institutional and commercial buildings, to read announcements or declare states of emergency. Intercom systems, which are often used in schools, also have microphones in each room so that the occupants can reply to the central office.
There is disagreement over when to call these audio systems sound reinforcement systems or PA systems. Some audio engineers distinguish between the two by technology and capability, while others distinguish by intended use, e.g., sound reinforcement systems are for live music, whereas PA systems are for reproduction of speech and recorded music in buildings and institutions. This distinction is important in some regions or markets, while in other regions or markets the terms are interchangeable.[1] In colloquial British English, a PA system installed for public address in a building is sometimes referred to as a Tannoy system after the company of that name.[2]
公共廣播系統（PA系統 ）是一個電子放大系統與混頻器 ， 放大器和揚聲器 ，用來加強聲源， 例如 ，一個人在儀式上致辭，1 的DJ播放預先錄製好的音樂，傳播聲音或在整個場地建設。
Simple PA systems are often used in small venues such as school auditoriums, churches, and small bars.簡單的擴音系統往往用在小場地，如學校禮堂，教堂和小酒吧。 PA systems with a larger number of speakers are widely used in institutional and commercial buildings, to read announcements or declare states of emergency. Intercom systems, which are often used in schools, also have microphones in each room so that the occupants can reply to the central office. PA系統與很多發言者都在廣泛使用的體制和商業樓宇，閱讀公告或宣布緊急狀態。 對講系統，通常用於學校，也有麥克風在每個房間，讓住戶可以答复中央辦公室。
There is disagreement over when to call these audio systems sound reinforcement systems or PA systems.有分歧時，把這些音頻系統擴音系統或擴音系統。 Some audio engineers distinguish between the two by technology and capability, while others distinguish by intended use, eg, sound reinforcement systems are for live music, whereas PA systems are for reproduction of speech and recorded music in buildings and institutions.一些音頻工程師區分二者之間的技術和能力，而其他區分的用途，例如，擴聲系統，現場音樂，而PA系統是複製的言論和錄製音樂中的建築和機構。 This distinction is important in some regions or markets, while in other regions or markets the terms are interchangeable. [ 1 ] In colloquial British English , a PA system installed for public address in a building is sometimes referred to as a Tannoy system after the company of that name. [ 2 ]這種區別是很重要的一些地區或市場，而在其他地區或市場的條件是可以相互轉化。 [1]在口語化的英式英語 ，一個PA擴音系統安裝在建築物內，有時被稱為一個天朗系統後，該公司該名稱的。 [2] |
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发表于 2020-8-18 10:06
