Place it just before the main reveal in your edit, then follow it with a Dun Dun Dun for the twist and a Vine Boom for the impact. That order gives the reveal a clear build, a twist, and a final hit.
关于此声音
This 4.4-second clip is an ominous flapping sound. It gives a tense, uneasy feeling, as if something unseen is approaching just out of view. That creeping sense of threat makes it work for moments of dread without a single word being spoken.