loud-hailer

• Dispositivo eletrônico portátil que amplifica a voz do usuário, composto por microfone, amplificador e alto-falante, geralmente usado para falar com uma multidão ou fazer anúncios a distância.

A portable electronic device that amplifies the user's voice, consisting of a microphone, amplifier, and loudspeaker, typically used for addressing crowds or giving announcements over a distance.

1. Portable loudspeaker deviceB2formalbritish

   A portable electronic device with a built-in microphone and amplifier, used to amplify a person's voice over a distance.

   Megafone

   • The police officer used a loud-hailer to address the crowd.
   • The captain shouted orders through a loud-hailer from the bridge.
   • During the emergency, rescuers used a loud-hailer to guide survivors.

   Sinônimosbullhornmegaphone