How Can You Hear Someone Through a Wall?

Imagine you're at a concert. The music comes through the speakers, and you feel it in your chest, that’s how sound works. When someone talks on one side of a wall, their voice makes vibrations in the wall, like a drum being hit. These vibrations go all the way to the other side and reach your ears, making you able to hear what they're saying, even though there's a wall between you.