The Deep Note was created by James A. Moorer for THX and first heard in theatres in 1983 before Star Wars: Return of the Jedi. Designed to show off cinema sound systems, its rising synthesized tones became one of the most recognised logos in film. Online, creators deep-fried the recording, boosting bass and distortion until it joined the vine boom and MLG air horn in the toolbox of intentionally too-loud meme sounds. It remains popular because the build is instantly familiar and the payoff feels huge.