Place it at the very start of a clip, before the spoken line or caption that carries the news, then follow with a Bell Ding if you want a second alert for the punchline, or keep it alone when the message itself should carry the moment.
Sobre este som
This is a brief electronic alert from São Paulo Metro trains and stations, sounded just ahead of a spoken message and lasting under two seconds. It feels crisp and expectant, like a polite tap that makes everyone listen for what comes next. The cue belongs to the rapid transit system serving Brazil's largest city, where it tells passengers that information is about to follow.