| Megaphone |
Articles about Megaphone |
Information AboutMegaphone |
| CATEGORIES ABOUT MEGAPHONE | |
| audio amplifiers | |
| sound technology | |
|
A megaphone, '''speaking-trumpet''', '''bullhorn''' or '''loud hailer''' is a portable, usually hand-held, funnel-shaped device whose application is to send a person’s natural voice toward a targeted direction for a specified purpose. This is accomplished by channeling the sound through a funnel, which also serves to match the level. It consists of a Microphone , an Amplifier and a Loudspeaker . Inventor Thomas Edison exhibited an early version of the megaphone at the Paris Exposition . Common uses for megaphones are at sporting events, Political functions and generally when one needs to address congregations of people in open spaces. Police Officer s often use them to communicate with suspects and rescue crews during operations to communicate with the victim. SEE ALSO REFERENCES |
|
|