What is the Instrument used to magnify sound?

A megaphone, also known as a speaking trumpet or a bullhorn, is a cone-shaped device designed to amplify the sound of a person's voice. It consists of a wide end that is placed near the mouth and a narrow end that projects the sound outward.

When a person speaks into the wide end of the megaphone, their voice waves travel down the cone and are amplified as they exit the narrow end. This amplification results from the shape of the megaphone, which causes the sound waves to become concentrated and directed in a specific direction.

Megaphones are commonly used by people who need to project their voices over a long distance or in noisy environments, such as sports coaches, tour guides, lifeguards, and protesters. They are also used in theatrical productions and musical performances to enhance the audibility of actors' and performers' voices.

Megaphones come in various sizes and materials, from handheld devices made of plastic or metal to larger, more powerful versions used for outdoor events. Some megaphones also incorporate electronic components, such as microphones and speakers, to further amplify and project sound.