Place it at the cut where a new participant enters the frame, then follow it with a discord call cue before the reply appears, and pair it with a bell ding accent under a title card to mark the next arrival clearly in sequence.
关于此声音
This is a short alert lasting just over a second, the ICQ signal for an incoming contact, played as a brief electronic notification tone. It feels alert and nostalgic, giving listeners a quick jolt of recognition like a message arriving out of nowhere. It comes from ICQ, the messaging service named in its title.