Place it at the very start of an entrance clip, right before the person is fully visible, then follow it with Yaaaay Cheer once the crowd reacts. For a bigger reveal, put a fanfare before it and let the cheer close the sequence.
关于此声音
This is a short Portuguese voice clip of about three seconds in which a speaker stretches out the greeting Olhaaa quem chegou, announcing that someone has just arrived. The drawn-out opening gives it a playful, triumphant feeling, like a grand entrance being announced to a room. It works as a warm, teasing welcome rather than a quiet hello.