megaphone

A megaphone is a tool used to amplify one's voice. It's often used in places like stadiums or streets to communicate with large crowds.

It's frequently used at school sports days or cheering events, and it's an essential item in Korean school cheering culture.

The megaphone was invented in the 1670s by the English scientist Samuel Morland. Initially, it was used for communication on ships. Nowadays, it's used in various settings, including rallies, protests, and sporting events.

The megaphone has also become an important tool in K-pop fandom culture. Fans use it at fan meetings and concerts to shout cheers and project their voices, creating a unique cheering culture.