: Directional audio cues tell you exactly where entities are moving. For example, when Weird Climber Dude stops banging on pipes, he is already at your door.
For those looking to analyze the game's design (often what "papers" cover in a development context), the official explanation highlights several key mechanics: five nights at winstons github
Check out the Five Nights at Winston's Wiki for detailed AI movement patterns : Directional audio cues tell you exactly where