The water pouring then fades to black with the Dolby sign still appearing over the black background as a small trademark byline appears under. Under that the words "The latest Development in surround sound technology" appear. A large amount of water is pouring over the screen in very little slow-motion as the Dolby Digital Surround EX logo fades in. Trailer: On a black background, the words "This following film is presented in" fades in and fades out to black. A number of DVDs have a Dolby Digital Surround EX audio option. The result can be played without loss of information on standard 5.1 systems, or played in 6.1 or 7.1 on systems with Surround EX decoding and added speakers. The extra surround channel is matrix encoded onto the discrete left surround and right surround channels of the 5.1 mix, much like the front center channel on Dolby Pro Logic encoded stereo soundtracks. It provides an economical and backwards-compatible means for 5.1 soundtracks to carry a sixth, center back surround channel for improved localization of effects. BackgroundÄolby Digital Surround EX is a version of Dolby Digital co-developed by Dolby and THX and made its debut for the release of Star Wars: Episode I - The Phantom Menace. For other uses, see Dolby (disambiguation). This article is about Dolby Digital Surround EX.
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