loudhailer
Portable sound projector
A loudhailer is a portable device that amplifies the voice, used to address crowds or communicate across distances.
British term for what Americans call a megaphone or bullhorn: The police officer spoke through a loudhailer, ordering the crowd to disperse.
Portable voice amplifier
- bullhornPortable voice amplification device
- amplifierSignal-strengthening electronic device
- microphoneAudio input device
- public addressBroadcast communication system
PA system · cone · horn · handheld · battery-powered · portable · wireless · electronic
Civil law enforcement
- enforcementCompelling compliance with rules
- commandAuthoritative instruction given
- directiveFormal command or instruction
- crowd controlRegulating gathered masses
dispersal · evacuation · warning · announcement · order · official · emergency · compliance
Transmitted media signal
- proclamationFormal public announcement
- addressSpeak to formally
- noticeBecome aware of
- alertWarning or watchfulness
declaration · statement · message · communication · public · event · stadium · fairground
Public display of opinion
- rallyGathering for a cause
- activismDirect effort for reform
- chantingRhythmic repetitive vocalization
- slogansCatchy promotional catchphrases
march · crowds · picketing · placards · civil disobedience · solidarity · resistance · movement
megaphone
Portable voice amplifier
- bullhornPortable voice amplification device
- amplifierSignal-strengthening electronic device
- microphoneAudio input device
public address · PA system · cone · horn · handheld · battery-powered · portable · wireless · electronic · acoustic
police
Civil law enforcement
- enforcementCompelling compliance with rules
- commandAuthoritative instruction given
- directiveFormal command or instruction
crowd control · dispersal · evacuation · warning · announcement · order · official · emergency · compliance · instruction
broadcast
Transmitted media signal
- proclamationFormal public announcement
- addressSpeak to formally
- noticeBecome aware of
alert · declaration · statement · message · communication · public · event · stadium · fairground · carnival
demonstration
Public display of opinion
slogans · march · crowds · picketing · placards · civil disobedience · solidarity · resistance · movement · dissent
ship
Seagoing transport vessel
- deckShip's flat surface
- bridgeStructure spanning an obstacle
- coastguardSeafaring emergency responders
nautical · sailor · harbor · port · vessel · yacht · maritime · foghorn · signal · lifeboat
loudhailerwhisper
Speech without full voice
silencer · muffler · mute · earplugs · soundproofing
loudhailerearpiece
Speaker worn in-ear
hearing aid · listening device · receiver · earphone · ear trumpet