How would I implement this game mechanic?

For a puzzle game I’m making, I want to have a game mechanic similar to the one in this video: - YouTube.

Essentially, a sound wave coming from an object would reveal the world around it, like echolocation. The game in the video wasn’t made in unity, so is this possible in unity? How would I go about doing it?

Use vector3.distance or some bubbles, it should work like fogofwar in RTS games right? This is possible use triggers and distance markers, or somethings that are like spheres I dont know what they are called.