The sound is labelled as beta audio from Need for Speed Rivals, the 2013 open world racing game from Ghost Games and Electronic Arts. Clips taken from beta and unused game files often circulate separately from the final release, shared by fans who extract sound effects for editing. This hum survived because it is generic enough to work outside racing, fitting any energy shield or futuristic device. Editors keep reusing it for game montages, fan trailers and short sci-fi scenes where a clean loopable drone is needed.