Notification sounds like this became a staple of online video as messaging apps, streaming platforms and donation alerts made the familiar chime part of everyday screen life. Short, instantly recognisable alerts work well because viewers already associate the tone with something new arriving, whether that is a chat message, an email or a viewer tip. On soundboards it is collected alongside other alert and meme effects for quick use in edits, reactions and livestreams, where a two-second cue can set up a joke, mark a reveal or break up a longer clip without needing any explanation.