The sound illusion that makes Dunkirk so intense

Why Christopher Nolan is obsessed with Shepard tones. Subscribe to our channel! http://goo.gl/0bsAjO Christopher Nolan's Dunkirk is a nerve-wracking movie. Three separate storylines tell the tale of the famed World War II evacuation in a intense two hours of film.

A Shepard tone is a sound illusion that gives the impression of a continually ascending (or descending) tone. The video above has some great examples of why they are so great for building suspense and tension.