In the post-production/editing aspects of bringing a film to closure, the foley artist adds sound effects to the exposed film relevant to the action taking place and the requisite noises/effects. The foley artist is primarily concerned with noises made by people rather than those made by machines and they will add sounds like footsteps, kisses, pun...
The person in charge of adding in sound effects such as the sounds a prop would make etc.
an artist that creates sound effects for motion