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Digital Audio Coding for Playback

Dolby Technology Found In
Dolby® TrueHD

Dolby TrueHD is the next-generation lossless technology developed for high-definition disc-based media. This advanced technology provides an unprecedented audio experience-bit-for-bit identical to the highest-resolution studio masters. Now listeners can enjoy sound as stunning as the high-definition picture. If it's Dolby TrueHD, it's truly HD. More

Home Entertainment, PC, Automotive
Dolby Digital Plus

Dolby Digital Plus provides the flexibility and efficiency to deliver more channels of compelling surround sound for high-definition programming, disc-based media, and online content. This means an astounding new level of audio quality, with more space for other content-more bonus materials, interactive elements, and director commentaries-for the consumer to enjoy. More

Home Entertainment
Dolby Digital

Delivers mono, stereo, or up to 5.1 discrete channels of surround sound: Left, Center, Right, Left Surround, Right Surround, and low-frequency effects (LFE). Global standard for DVD-Audio and DVD-Video. Digital audio standard for North American HDTV, digital cable, and DBS systems. Optional audio format for most digital video broadcast (DVB) applications worldwide. More

Home Entertainment, PC, Games, Automotive, Motion Pictures
Dolby Surround

The original Dolby multichannel analog film sound format that revolutionized movie soundtracks. This technology encodes four channels of audio (Left/Center/Right/Mono Surround) onto just two audio tracks for media such as TV broadcasts and feature films on VHS. Material encoded in Dolby Surround is fully compatible for playback on mono and stereo systems, and upon playback on systems containing Dolby Pro Logic® technology, the audio is reconstructed to its original four-channel surround sound. More

Home Entertainment, Motion Pictures
Dolby Analog (Spectral Recording)

The original Dolby multichannel film sound format revolutionized the movie experience, and it is still included today on nearly all 35 mm film prints. This analog optical technology encodes the soundtrack into four channels. Left, Center, and Right all play back on speakers located behind the screen. The fourth channel, Surround, is heard over speakers at the sides and rear of the theatre, and is used for ambient sound and special effects. Dolby analog soundtracks now incorporate Dolby SR technology, which significantly improves the dynamic range. The analog soundtrack is used in cinemas not equipped for digital playback. In digitally equipped theatres, it serves as a backup in case of problems with the digital track.

Motion Pictures
Dolby Digital Live

Found in PC and console-based videogame applications, Dolby Digital Live converts any stereo or multichannel audio signal to Dolby Digital format for a dramatic, real-time audio experience and simple (one plug) connection to an A/V receiver for playback. More

PC, Games
Dolby Digital EX

Creates a rich surround-sound home theater experience by adding a sixth channel (Center Back) to Dolby Digital Surround EX™-encoded content for enhanced localization of surround effects. More

Home Entertainment
Dolby Digital Surround EX

Surround sound format that introduces a center rear channel to the 5.1 playback format of Dolby Digital. This additional channel clarifies audio effects that pan from front to back and improves the realism of audio that originates from directly behind the listener. More

Motion Pictures
MLP Lossless™

Core technology behind DVD-Audio and one of the most technically superior audio formats ever created. MLP Lossless enables the highest-quality stereo or multichannel audio on a DVD. With MLP Lossless technology, playback is bit-for-bit identical to original studio masters. More

Home Entertainment, Automotive, PC
AAC (Advanced Audio Coding)

AAC (Advanced Audio Coding) is a perceptual coding method used to compress digital audio files for efficient storage and transmission. Upon playback, the expanded files can provide sound quality nearly indistinguishable from the original sources. In general principle, AAC is similar to MP3, but offers a number of advantages designed to improve audio quality. These include higher-efficiency compression, more channels, and much better handling of audio frequencies above 16 kHz. The improved efficiency of AAC files makes AAC a particularly good choice for streaming audio over the Internet.

Dolby Laboratories is one of the developers of AAC. It is one of several audio coding systems defined by ISO/MPEG, where it was first specified as MPEG-2 AAC, and then enhanced and extended within MPEG-4. Apple's popular iTunes music service employs the AAC format. If you are a building a product and want a license to incorporate AAC technology, please visit our subsidiary, Via Licensing.

Home Entertainment, PC

Digital Audio Coding for Creation

Dolby Technology Found In
Dolby Digital Recording

Record stunning Dolby Digital stereo soundtracks. Generally featured in basic DVD-Video players and PVRs. Requires less data to deliver high-quality sound which means more disc space is made available for higher video quality or extended recording time. More

Home Entertainment, PC
Dolby Digital Stereo Creator

Author DVDs with high-quality Dolby Digital stereo soundtracks. Featured in DVD-Video recorders and PVRs equipped with advanced editing and creation capabilities. Requires less data to deliver high-quality sound which means more disc space is made available for higher video quality or extended recording time. More

Home Entertainment, PC
Dolby Digital 5.1 Creator

The ultimate power to record soundtracks with a camcorder or master soundtracks on your PC in 5.1 Dolby Digital audio. Efficient encoding saves recordable disc space, allowing for higher video resolution or extended recording time. Compatible with virtually any DVD-Video player (depending on media and recording system). More


Surround Sound Expansion

Dolby Technology Found In
Dolby Pro Logic

The Dolby technology that made home theater possible. Decodes Dolby Surround movie content into four playback channels of surround sound: Left, Center, Right, and Surround. More

Home Entertainment, Automotive
Dolby Pro Logic II

Transforms any high-quality two-channel source into five independent full-range channels: Left, Center, Right, Left Surround, and Right Surround. Brings new life to playback of CDs, MP3s, and other stereo content including surround encoded broadcast/VHS. More

Home Entertainment, Automotive, Games, PC
Dolby Pro Logic IIx

Delivers the most natural, seamless 6.1- or 7.1-channel listening experience. Processes any high-quality stereo, 5.1, or Dolby Digital Surround EX–encoded content into 6.1 or 7.1 playback channels, depending on speaker configuration: Left, Center, Right, Left Surround, Left Back, Right Surround, Right Back, and subwoofer. More

Home Entertainment, Games, PC

Virtual Surround Sound

Dolby Technology Found In
Dolby Headphone

Accurately simulates a 5.1-channel surround sound speaker system from any pair of headphones. More

Home Entertainment, Automotive, Games, PC
Dolby Virtual Speaker

Simulates a properly placed 5.1-channel speaker system from a pair of stereo speakers. Ideal for enthusiasts who do not have the room for a dedicated 5.1-channel playback system. More

Home Entertainment, Games, PC