True, but I think you underestimate how loud traffic is. A lively pedestrian area (which there aren't many of) is probably nowhere near a busy street. It could

True, but I think you underestimate how loud traffic is. A lively pedestrian area (which there aren't many of) is probably nowhere near a busy street. It could also easily have 5 times as many people per area. Edit: Also if you watch the video there's a scene where he steps off a train in Delft and it's very quiet. Obviously densely settled areas must be louder, but perhaps not always loud.