The origin of this particular recording is unknown, as it arrived on a user-generated soundboard without any credited source. Sounds like this circulate widely among creators because a door knock is one of the most universally understood audio cues, instantly telling an audience that someone is waiting outside. Unlike the louder classic door knocking sound effect used for comedy or jump-scares, this gentler take suits intimate, late-night or sneaky moments. Its short length and clean recording make it an easy drop-in for short-form videos, skits and stream alerts.