This sound is from The Omen (1976)

The Omen, a spine-chilling horror classic released in 1976, dives into the terrifying tale of a young boy named Damien. His parents (played by Gregory Peck and Lee Remick) soon discover that their son is no ordinary child, but rather the antichrist himself. Directed by Richard Donner, this iconic film delivers gripping performances from Harvey Stephens as Damien and Billie Whitelaw as his sinister nanny. To immerse yourself in the unsettling atmosphere of The Omen, you can play and download the haunting sounds of the film here.