sound effect

an artificial sound created and used in a motion picture, play, video game, etc. to make it more realistic

A sound effect is an artificially created or enhanced sound used in film, television, video games, radio, or other media to support or enhance the storytelling. These sounds are designed to replicate real-world noises or create imaginative audio cues, such as footsteps, explosions, or ambient noises. Sound effects help to build atmosphere, convey action, and improve the overall auditory experience by adding depth and realism to the visual elements. They are typically added during the post-production phase to ensure they align perfectly with the on-screen action and contribute to the desired mood or impact.