megaphone

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megaphone

[′meg·ə‚fōn]
(acoustics)
A conical or rectangular horn used to amplify or direct the sound of a speaker's voice.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Generally, sensitive zone of electronic dictionary exists on the LCD screen, power zone, loudhailer, keystroke zone and crust.
Eyewitness Natalja Taylor, 30, said police drove up the beach with a loudhailer, urging people to stay out of the sea.
I'm not suggesting that running around Brixton with a loudhailer using the n-word should be allowed, but people must be able to say the unsayable without fear of persecution.
Sound design is inventive, with loudhailer announcements to provide Big Brother (another Orwell creation) style announcements and the live guitar provides great atmosphere at key moments.
As the decision to hang Guru emerged, security forces imposed a curfew in rural areas parts of Indian-administered Kashmir, with the announcement made by loudhailer as police patrolled the streets.
I had the great pleasure of spending an afternoon with Dave Sutch as he went on the campaign trail and watched him stand in a rubbish bin at the bottom of Church Street in Honley to make an impassioned speech through his trade-mark loudhailer to an audience of me, photographer and passing dog.
The kit, which the MoD says will mostly be used as a loudhailer to make boats stop on the Thames, was seen this week fixed to a landing craft on the river at Westminster.
The group of around 100 men shouted "USA terrorists", brandished anti-American placards and chanted through a loudhailer.
He argued that for the order to be lawful he needed to be aware of it, and that due to the loud noise of the crowd and the loudhailer he was using, he had not heard Insp Tennant.
They were warned over a loudhailer: "Move back or officers with baton will be deployed."
No longer with the loudhailer vocal of G W Sok but instead the more melodic Arnold de Boer was backed up by a roving brass quartet, The Ex was as incredible and explosive as ever.
Northumbrian Water posted notes through the front doors of homes last night and loudhailer messages in the town informed residents of the measure.