Place this clip at the very start of a segment, before any spoken announcement or title card appears on screen. Follow it with a bell ding sound effect for a quick confirmation cue, or switch to a classic error sound when the announcement turns into bad news.
關於此聲音
This clip is the familiar two-tone airport PA ding that plays right before a terminal announcement, stretched into a 15-second chime sequence. It feels instantly official and attention-grabbing, like important travel information is coming, which makes even ordinary news sound urgent and a little stressful in a funny way.