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Dolby Digital 6.1 EX is an enhancement to the standard Dolby Digital setup provided in most theatres. Concieved by Oscar-winning sound designer Gary Rydstrom and with joint collaberation with THX and Dolby Laboratories, the addition of a "back" channel to the theatre seemed a logical step in the evolution of theatre digital sound.

Although Dolby 5.1 is a complete discrete 5 channel and LFE setup, Dolby 6.1EX is not. The additional "back" channel is derived from the matrixed components of the left and right surround channels.

Since DD6.1EX is a technology that is a subclass of DD5.1, then all DD6.1EX films are playable through a DD5.1 decoder. Debuted in the latest chapter of the Star Wars series : Episode I, the new technology was also used in the following movies.

Buena Vista

Toy Story 2

Mission to Mars

Destination Films

Bats

DreamWorks SKG

The Haunting

Gladiator

Chicken Run

MGM/United Artists

James Bond: The World Is Not Enough®

New Line Cinema

Austin Powers: The Spy Who Shagged Me

Sony Releasing

The Messenger: The Joan of Arc Story

Twentieth Century Fox

The Fight Club

Star Wars, Episode One

X-MEN

Minority Report

USA Films

Pitch Black

Universal

The Bone Collector

The list of films using this was taken from the Dolby website. (quite some time ago, may I add.)

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