Crunch. Crunch. Whoosh! In the early days of film, Foley artists created sounds to support the story’s action. Squeezing a leather pouch filled with cornstarch made the sound of snow crunching, shaking a pair of gloves sounded like bird wings flapping, and waving a thin stick made a whoosh sound. To make movies as realistic as possible, these artists used creative techniques to replicate sounds.