loudhailers
Portable voice amplifiers
Loudhailers are portable devices that amplify the voice, used to address crowds or communicate over distance.
The term is more common in British English; Americans typically say bullhorn or megaphone.
Police used loudhailers to order the crowd to disperse.
Portable voice amplifiers
- bullhornsPortable voice amplification devices
- amplifiersDevices that increase signal
- speakersAudio output devices
- microphonesAudio input devices
PA systems · cones · horns · portable speakers · battery-powered · handheld · public address · sound equipment
Civil law enforcement
- crowd controlRegulating gathered masses
- announcementsOfficial statements to many
- warningsAdvance notices of danger
- evacuationRemoval from danger
emergency services · marshals · officials · directives · commands · orders · dispersal · public safety
Public displays of opinion
- ralliesGathers or recovers
- marchesCoordinated rhythmic walking
- activistsPeople working for causes
- slogansCatchy promotional catchphrases
chanting · crowds · picketing · organizers · civil disobedience · strikers · picket lines · mobilization
megaphones
Portable voice amplifiers
- bullhornsPortable voice amplification devices
- amplifiersDevices that increase signal
- speakersAudio output devices
microphones · PA systems · cones · horns · portable speakers · battery-powered · handheld · public address · sound equipment · broadcast equipment
police
Civil law enforcement
- crowd controlRegulating gathered masses
- announcementsOfficial statements to many
- warningsAdvance notices of danger
evacuation · emergency services · marshals · officials · directives · commands · orders · dispersal · public safety · traffic control
demonstrations
Public displays of opinion
slogans · chanting · crowds · picketing · organizers · civil disobedience · strikers · picket lines · mobilization · dissent
ships
Seagoing vessels
nautical · bridge · dockside · vessels · crew · moorings · ports · boatswain · seafaring · boarding
loudhailersmicrophones
Audio input devices
listening devices · hearing aids · earpieces · receivers · ear trumpets
loudhailerswhispers
Speaks very quietly
silencers · mufflers · mutes · hushed tones · murmurs