| 释义 |
public-address system
pub·lic-ad·dress system (pŭb′lĭk-ə-drĕs′)n. Abbr. PA An electronic amplification apparatus installed and used for broadcasting in public areas.public-address system n (Electronics) a system of one or more microphones, amplifiers, and loudspeakers for increasing the sound level of speech or music, used in auditoriums, public gatherings, etc. Sometimes shortened to: PA system pub′lic-address′ sys`tem
n. a combination of electronic devices that makes sound audible via loudspeakers to many people, as in an auditorium or out of doors. [1920–25] Translations
public-address system
public-address system a system of one or more microphones, amplifiers, and loudspeakers for increasing the sound level of speech or music, used in auditoriums, public gatherings, etc. sound-amplification systemA combination of one or more microphones, amplifiers, loudspeakers, and associated electronic controls; used to increase the level of a sound source so that it may be heard clearly in all parts of an auditorium, large room, open-air theater, etc.ThesaurusSeePA system |