Sound of a person knocking on a door from the outside, the microphone was inside the house.
The house is old and completely empty, so the reverb you hear is natural.
Perfect for haunted houses, of course! 
Sound of a person knocking on a door from the outside, the microphone was inside the house.
The house is old and completely empty, so the reverb you hear is natural.
Perfect for haunted houses, of course!
