loudhailer

A loudhailer, also known as a megaphone or bullhorn, is a portable, directional horn loudspeaker that intensifies the sound produced by a person's voice. It is typically powered by batteries and amplifies the user's voice, allowing it to be heard over longer distances or in noisy environments. The device consists of a microphone, an amplifier, and a horn-shaped speaker. When a person speaks into the microphone, their voice is amplified and projected outwards through the horn.

Loudhailers are commonly used for a variety of purposes. They are frequently seen at sporting events, concerts, and rallies for crowd control and announcements. Emergency services, such as police and firefighters, utilize them for communication during incidents. Construction sites and industrial settings also employ loudhailers for directing workers. Their portability and ease of use make them a practical tool for broadcasting messages to groups of people in open spaces or areas where ambient noise levels are high. The effectiveness of a loudhailer depends on factors like its power output, the ambient noise, and the acoustic properties of the environment.