Foley

http://www.youtube.com/watch?v=OONaPcZ4EAs

Foley is sound that is recorded behind screen where it is not heard on set. In animation, this method is more commonly used for creating sound effects for creating new and bizarre sounds or recreating a sound. In the picture example, this is the Disney sound team recreating a train sound for Dumbo. As seen in the picture, there is a man on the right of the motion picture with a makeshift train wheel on a track that he will spin around, and next to him is a man with a brush that will help create that train sound more. Oddly enough, there is a man with a banjo that he will play, which proves that most objects, common or small scale were used a lot to help create sound. To help with the explanation of what Foley sound is, the link at the very top shows what foley artists look like in action.