If I would start to play the violin, I would generate a sound field which would propagate in this hall, and at some point, the sound field would hit the side walls and would be scattered all over the place.
Se eu começasse a tocar violino, eu geraria um campo sonoro que se propagaria nesta sala, e, em algum momento, esse campo atingiria as paredes laterais e seria espalhado por todo o lugar.