So today I was holding up an umbrella near someone playing music, and it sounded like the music was coming from the top of my umbrella. Is this a similar effect to a radio? Can it be seen as sound being a disturbance of the air that causes the metal to vibrate which amplifies it to make it sound like it is originating from a different location? Also, I'm tired, but I'm putting this up so that people will tell me if it is an accurate way to see it, because I like to be accurate. Or if it is a completely different effect it would be nice to know, I'm just guessing randomly here.