Dolby Digital

(redirected from Dolby Digital EX)
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Dolby Digital

A family of digital audio encoding technologies from Dolby used in movie theaters, home theaters and video games. Introduced in the movie "Batman Returns" in 1992, Dolby Digital has been the most widely used surround sound system in the world. Following are the major formats. See Dolby Surround and surround sound.

Dolby Digital - 5.1 Channels
Five discrete channels of audio plus subwoofer (see surround sound). Dolby Digital employs Dolby's AC-3 coding and compression technology (see AC-3).

Dolby Digital EX - 6.1 and 7.1 Channels
Co-developed with Lucasfilm THX, Dolby Digital EX adds one or two matrixed rear center channels. Formerly "Dolby Digital Surround EX," the first film to use this enhanced version of Dolby Digital was "Star Wars: Episode I - The Phantom Menace," in 1999.

Dolby Digital Plus - 6.1 and 7.1 Channels
Part of the Blu-ray specification, Dolby Digital Plus supports higher bit rates than EX. Also called "DD+" and "Enhanced AC-3" (E-AC-3).

Dolby TrueHD - 7.1 on Blu-ray
Providing up to 14 discrete sound channels in the complete specification, TrueHD used in Blu-ray movies delivers stereo at 192 kHz and up to eight channels (7.1) at 96 kHz. Introduced in 2006, Dolby TrueHD competes with DTS-HD for high-definition Blu-ray audio formats. HDMI 1.3 cables are required. See Blu-ray, DTS and HDMI.

Dolby Atmos (Object Based)
Introduced in 2012, Atmos allows audio "objects" to be positioned in 3D space. For details, see Dolby Atmos.
References in periodicals archive ?
With Dolby Digital EX, the center-rear data is derived from the L+R component contained within the stereo-surround signals available with specially configured, 5.
1 format is DTS ES, and in principle this one works pretty much the same way that Dolby Digital EX does.
1-channel surround sound, 32 DSP modes and Dolby Digital, Dolby Digital EX, DTS, DTS-ES, DTS Neo:6 and Dolby Pro Logic IIx decoding.
The VSX-1015TX, VSX-915, VSX-815 and VSX-515 highly advanced receivers offer a full complement of sound processing ability, including Dolby Digital EX, DTS-ES, Dolby Pro Logic IIx and Windows Media Audio 9 Professional(TM).
Home-theater surround sound is delivered via support for Dolby Digital EX, giving users true 8-channel surround sound playback.
Today, Dolby Laboratories continues to bring the entertainment experience forward with such remarkable technologies as Dolby Digital EX, Dolby Headphone, Dolby Virtual Speaker, and Dolby Pro Logic II.
In addition to Dolby ProLogic IIx and Microsoft WMA 9 Pro, the new SHARC Processors support the full range of high-resolution audio formats, including PCM 96 kHz, Dolby Digital, Dolby Digital EX, DTS(R) Discrete 6.
Extending the advanced matrix decoding techniques first introduced in Dolby Pro Logic II and Dolby Digital EX, Dolby Pro Logic IIx, when added to a music or movie playback source, provides the most natural and seamless surround sound experiences available.
Increasing Number of DVD Titles Encoded With Dolby Digital EX
1 the first software DVD player approved by Dolby Laboratories for Dolby Digital EX decoding, a new audio innovation from Dolby Laboratories that delivers a third surround audio channel to create an added sense of realism.