The sound comes from the Netherlands, where NOS is the public broadcaster behind the Journaal, the country's long-running television news programme. A gong like this was traditionally used to mark the start of a bulletin, giving viewers a clear audio cue that the news was beginning. This particular 1980 version has survived as a short, recognisable archive clip, shared online by people interested in old Dutch television idents and retro broadcast sounds. Creators now reuse it as shorthand for a formal announcement, a throwback news intro, or a deliberately serious moment in an otherwise light video.