Asynchronous Sound

Sound which is indigenous to the action but not precisely synchronized with the action. In a close­up in which the surroundings are not visible, a sound that seeps into the shot sometimes impresses us as mysterious, simply because we cannot see its source. It produces the tension arising from curiosity and expectation. Sometimes the audience does not know what the sound is they hear, but the character in the film can hear it.AN example is shown at 2.00 in I think it was used here to entice the sense of fear and let the audience know that something bad and dangerous is coming, but they do not know what making it more scary.