This sound is based on the well-known Windows startup chime, but circulated online as an exaggerated loud version for shock value. Variants labeled with warnings like protecting your ears are common on soundboards, short video edits and prank compilations. The joke depends on the contrast between a routine computer boot sound and an absurdly boosted volume level. It remains popular because the Windows chime is instantly recognizable to many listeners, making the sudden blast easy to understand even in very short meme clips.