Most sitcoms have what they call a laugh track (or laughter track) I’s a separate soundtrack for a recorded comedy show containing the sound of audience laughter. The laugh track is most commonly used to imply artificial laughter and enhance the joke. But when you remove the laugh track it can turn a funny scene into dramatic one.Check out Friends episode season 5 "The One With Ross's Sandwich". It turns quirky Ross into a psychopath. Compare both clips.