Place it at the end of a chat sequence, right after the final message appears, to close the exchange. Follow it with a bell ding to mark the message as read, then a Dun Dun Dun beat while the reply stays unanswered.
关于此声音
This is the short sent-message chime from AOL Instant Messenger, lasting under a second, that confirms a message has gone out. It feels instantly nostalgic and quietly satisfying, like a small digital nod that your words are on their way. The clip comes from the classic AOL IM era, when that little sound marked every message sent.