public address system

n.

播音装置；

复数：public address systems

Public address system
Public address system
Public address system
Public address system with adjustable directivity
The Ability to Judge Sociability from the Voice as Transmitted Over a Public Address System
Development of the digital public address system
A Design of Network Digital Audio Public Address System
Judgment of occupation from the voice as transmitted over a public address system and over a radio.
Development of a digital integrated and minimized public address system with central control
Measurements for Electro-acoustic Performance of Public Address System
Discussion on “public address systems”: “Use of public address system with telephone lines”
Development of the Digital Public Address System with Speech Recognition
The Public Address System