The jump scare usually has a visual as well as an auditory element something nasty that suddenly enters the frame. It is the sound that really makes viewers jump, but it is the visual element that tends to stick with them.

Know the audio cues commonly set before a jump scare.\n\n Silence is the most common, but it usually comes right after a long, slow, and ominous swell in the music. Remember that jump scare work by hitting you with an image or sound very abruptly and quickly, not by slowly ratcheting things up.