Formerly called Dolby AC-3, is the 5.1 channel surround sound audio compression format developed by Dolby and used on DVD-Video discs.
Dolby Digital produces 5 discrete (perfectly separated) sound channels and a dedicated LFE (Low Frequency Effects) subwoofer channel. For this reason it is known as a 5.1 channel system (the .1 indicating the subwoofer channel that has limited frequency for just the low audio frequencies) Dolby Digital has all the benefits of an all digital system in terms of clear sound without distortion and noise. Compared to Dolby Pro Logic, the sonic improvement almost corresponds to stepping up from cassette tape to CD Dolby Digital is used in a variety of video/audio formats world wide including. DVD, Laserdisc, Computer Games, Radio and TV broadcasting. Dolby Digital was originally known as AC-3, this is still the name of the encoding used.
The quality standard for digital audio used for the sound component of video stored in digital format.
The standard surround sound format for DVD Video. It consists of five independent & discrete channels, and each output a full frequency sound. A sixth channel (named “subwooferâ€) will output only deep bass frequencies.
A technique developed by Dolby Laboratories for encoding audio files using perceptual algorithms. Most DVD-Video discs utilize Dolby Digital for the stored audio content.
An audio compression technique developed by Dolby. It is a multi-channel surround sound format used in DVD and HDTV.
The 5.1 channel audio standard for DTV and HDTV in Canada and the USA. It includes six discreet audio channels: Left, Center, Right, Left Surround (or side), Right Surround (or side), and a subwoofer -- LFE, "low frequency effects" -- (considered the ".1" as it is limited in bandwidth). Many televisions process these six channels into a two channel stereo pair and do not provide the full 5.1 channel surround sound.
A 5.1-channel discrete digital surround-sound format used in movie theaters and consumer formats. One of the surround formats used on DVD.
Referred to as Dolby Digital 5.1, this is a digital audio encoding method that creates five discrete channels (left front, center, right front, left surround, right surround), and an LFE track.
A perceptual coding system for audio developed by Dolby Laboratories and accepted as an international standard.
High-quality digital surround sound system for movies and TV programs. The successor to Dolby Pro-Logic. A Dolby Pro-Logic audio signal can be carried either over an analog or a digital transmission.
Ray Dolby developed a speaker system called "Dolby Digital". It consists of two front speakers, one left and one right, a central speaker and two effect boxes placed behind the listener. In addition, there is also a subwoofer for the bass tones. Dolby Surround, on the other hand, is a process which adds two more channels to the existing stereo sound, thereby achieving a surround sound.
The audio format standard for DVDs. Mono, stereo and surround sound tracks can all be encoded in Dolby Digital for high-quality audio.
Dolby Digital, also called Digital 5.1 or AC-3, is a five-channel surround sound system which delivers CD-quality digital audio and provides five channels of full frequency for front left, front right, center, surround left and surround right speakers, plus one channel for LFE (low frequency effect) subwoofer. It is the official audio standard for Digital TV and HDTV.
Dolby Digital is a form of digital audio coding which makes it possible to store and transmit high quality digital sound. This audio coding can be used for mono, stereo or multi-channel soundtracks. Dolby Digital 5.1 is a multi-channel system used by film producers to deliver five discrete (ie the signals for each channel are recorded independently), full range channels: front left, front right, front centre, left surround and right surround. The .1 refers to the Low Frequency Effects (LFE) channel which is purely for bass and is therefore not full range.
Also known as AC-3, this is the latest home cinema sound system from Dolby, using five discrete channels of digital sound plus a separate subwoofer channel
A newer term for Dolby AC-3. Consists of front left/right speakers, a center speaker, left/right surrounds, and a subwoofer.
AKA Dolby Digital 5.1. The Dolby Labs format for digital surround sound providing up to 5.1 channels; used in DVDs, the digital TV (DTV) system, and some laserdiscs; formerly called AC-3 (for Audio Code 3). Dolby Digital produces 5.1 discrete channels of sound for Left, Right, Center, Surround-Left, Surround-Right and Low Frequency Effects (LFE) for a Subwoofer.
Digital audio coding system from Dolby Laboratories, which can contain mono, stereo, or multichannel soundtracks, including Dolby Digital 1.0, Dolby Digital 2.0, or Dolby Digital 5.1.
Dolby Digital is the latest sound innovation from Dolby Laboratories. Dolby digital provides 6 channels of crystal clear digital surround sound. Left, center and right channels in front of you provide precise, clear positioning of dialogue. Separate or "discrete" left and right surround channels on the side and in the rear immerse you in the film with atmospherics and ambient sounds. And a subwoofer/bass effects channel contributes extra punch to action and special effects sequences.
1 - The new name for the most popular 5.1-channel home theater sound system. Used to be called Dolby AC-3. Consists of front left/right speakers, a center speaker, left/right surrounds, and a Low Frequency Effects (LFE) channel, usually used with a subwoofer. 2 - A 5.1-channel sound system. used in some commercial movie theaters in which the sound is placed in between the sprockets on the film.
This is a compression method that allows 1 to 5.1 channels of sound to be presented on disc.
Dolby Digital 5.1 can be found on most DVDs and involves sound being digitally encoded via five dedicated (discrete) channels and a low frequency effects channel. The speakers you need to take advantage of this are front left, front right, rear left, rear right, center speaker, and subwoofer for the low frequencies. The latest incarnations of Dolby Digital support an extra rear center channel for even more intense surround sound. Dolby Digital improves on its predecessor, Dolby Logic, because it supports stereo rear channels and a subwoofer channel.
"Cinema-like" surround- sound format (also known as AC3).
Refers to the standard under which digital surround sound is broadcast. Dolby Digital is a 6-channel standard corresponding to a center channel, two side front channels, two rear side channels and a subwoofer channel.
The most common sound format on the DVD format. Dolby Digital supports anything up to 7 discrete channels of sound and up to two additional channels for low-frequency bass. Most commonly, Dolby Digital on DVD supports 5.1 channels (left, centre, right, surround left, surround right and sub) but the DVD format can handle any number of channels within the Dolby Digital specification. Dolby Digital is a compressed sound format and is stored at a variable bit rate. All DVDs MUST carry one form of Dolby Digital soundtrack to meet the DVD Forum specifications for the format.
The approved 5.1 channel (surround-sound) audio standard for ATSC digital television, using approximately 13:1 compression. Six discrete audio channels are used: Left, Center, Right, Left Rear (or side), Right Rear (or side), and a subwoofer -- LFE, "low frequency effects" -- (considered the ".1" as it is limited in bandwidth).
A digital surround sound format that carries discrete information for 5.1 channels (front right, front center, front left, side left, side right, and subwoofer). The standard for DVD.
A multi-channel sound format that delivers audio to a home cinema speaker system
An advanced compression method that allows from 1 up to 6 channels of sound to be to be recorded. This is the standard sound format that is required on DVD, and it will also be used in future HDTV broadcasts. DD variants are represented by a number with a decimal point, the first digit gives the number of full bandwidth channels, the second digit the number of subwoofer channels. 1.0 is mono, 2.0 is stereo, and 5.1 is 5-channel with a subwoofer. A 2.0 mix can contain information that can be retrieved by a Dolby Prologic decoder, deriving signals to send to front, centre, right and surround speakers. Audio equipment with a Dolby Digital decoder is required to translate the sound track into multi-channel sound, although all DVD players will downmix the signal into two-channel surround if you don't have the DD equipment. If the DVD player has a decoder built in then the player can be connected directly to a power amplifier, if not, the decoder must be part of the amplifier/receiver, or present as a stand-alone unit. For more information, pleaser refer to the individual audio formats below.
Six totally independent channels of digital sound: stereo front left and right, centre dialogue and stereo rear channels, plus dedicated super woofer channel
An encoding system that digitally compresses up to 5.1 discrete channels of audio (left front, center, right front, left surround, right surround, and LFE) into a single bitstream, which can be recorded onto a DVD, HDTV broadcast, or other form of digital media. When RF-modulated, it was included on some laser discs, which requires an RF-demodulator before the signal can be decoded. Five channels are full-range; the .1 channel is a band-limited LFE track. A Dolby Digital processor (found in most new receivers, preamps, and some DVD players) can decode this signal back into the 5.1 separate channels. Most films since 1992's Batman Returns have been recorded in a 5.1 digital format, though a number of films before that had 6-channel analog tracks that have been remastered into 5.1.
A high-quality, sixchannel (often called 5.1) audio system using Dolby AC-3 coding technology. With a high degree of transparency and data rates as low as 320 kbps, Dolby Digital is used for applications including 35 mm film soundtracks, DVD, and broadcast.
An audio coding system used in the DVD Video format to create mono, stereo, and surround sounds.
AC-3 provides six separate discrete audio channels: left, right and center front, right and left surround and a low frequency woofer as a listener option. Dolby AC-3 is the first perceptual coding scheme designed specifically to code multichannel digital audio. It divides sizes optimised with respect to the frequency selectivity of human hearing. This makes it possible to sharply filter coding noise and reduce data consumption while delivering dynamic theatre quality sound. Unlike Dolby surround, AC-3 is entirely discrete and features five full frequency (20-20KHz) channels and one low frequency effects i.e.: subwoofer (20-120Hz) channel. DVD players with AC-3 audio will still be compatible with Pro-Logic surround and two channel stereo systems.
A popular compressed digital audio format which usually contains five or more discrete channels, e.g. 5.1 which includes side and rear channels, a centre speaker and a sub-woofer.
A well recognized multi-channel perceptual coding scheme, introduced by Dolby Labs and initially known as AC-3(Audio Coder 3). Dolby Digital was introduced into movie theaters in June 1992 as Dolby Stereo Digital. Dolby's earlier coding scheme, known as Dolby Surround or Pro-Logic is a single band limited surround channel with a range between 100 and 700Hz. In comparison, Dolby Digital offers a full dynamic range on all five main channels of 3-20 000Hz. On Laser discs and DVD's, the Dolby Digital scheme is carried on the right analog FM track. The left analog FM track usually carries the mono version of the soundtrack. Perceptual coding has been developed to decode the digital audio and eliminating the data that we cannot hear. The Dolby Digital channels are discrete, unlike Pro-logic so they cannot interfere with one another or bleed to an adjacent channel. The Dolby Digital signal is fed into the audio receiver via digital coaxial or optical cables.
Dolby Laboratories standard for transmitting 5.1 channels. Five full-value channels are transmitted in this acoustic playback system. A further channel is used for low frequencies(effects). The loudspeakers are arranged front left, front middle, rear left and rear right. This system is currently the most common system and is used in cinemas.
the approved 5.1-channel (surround-sound) audio standard for ATSC digital television. Six distinct audio channels are used: left, center, right, left rear, right rear (indicated by the “5”), and a subwoofer (indicated by the “.1”).
An encoding system that digitally compresses up to 5.1 discrete channels of audio (left front, center, right front, left surround, right surround and subwoofer) into a single bitstream. Five channels are full-range; the .1 channel is typically used for a subwoofer. A Dolby Digital processor (found in most receivers, preamps, and DVD players) can decode this signal back into the 5.1 separate channels. Additional formats of Dolby Digital, such as Dolby EX, apply this same format to systems with more channels such as 6.1 or 7.1. Competing format is DTS (see below.)
Dolby Digital (5.1) is a six channel home cinema system. It consists of a front channel for on-screen dialogue, Left & right front stereo channels, Left & right rear surround effect channels and a subwoofer channel for dedicated Bass effects. It is the ultimate home cinema system which gives the best quality cinema experience from DVD`s.
This is a method of coding digital signals developed by Dolby Laboratories, Inc. that gives movie theater ambience to a DVD video player's audio output when connected to a processor/decoder or amplifier with Dolby Digital 5.1ch or Optical (Toslink) input jacks. A large amount of audio information can be recorded on one disc using this method and most DVD-Video discs now contain Dolby Digital soundtracks. However, it does require a decoder, either in the player or in an external receiver to fully broadcast the surround/separate audio channels.
This proprietary technology is used to decode high-quality sounds from the DVD.
This is the main format the audio is stored onto DVD. It is a compression technique capable of storing from 1 to 6 channels of discrete sound information in a limited bandwidth. See Dolby Labs
Is a five-channel system consisting of left, center, right and left rear, right rear channels. All processing is done in the digital domain. Unlike Dolby Prologic in which the rear effects channels are frequency limited to approx. 100-7000Hz, Dolby Digital rear channels are specified to contain the full 20-20Khz frequency content. The AC3 standard also has a separate subwoofer channel for the lowest frequencies.
Also Dolby D. The standard for 5.1 channel (surround sound) audio. Six discrete channels are used (Left, Center, Right, Left Rear Surround, Right Rear Surround, and Subwoofer).
This is a digital surround sound technology used in movie theaters and upscale home theater systems that enhances audio. Home theater components with this technology work in conjunction with a "5.1-speaker" system (five speakers plus a low-frequency subwoofer) to produce true-to-life audio that draws the listener into the onscreen action.
Formerly AC-3, Dolby Digital is a method developed by Dolby Laboratories to digitally encode up to 5.1 discrete channels of high-fidelity sound in a single digital bitstream. The .1 channel refers to the "low frequency effects" (LFE) channel that carries only low frequency information, which is usually directed to the subwoofer upon playback. The encoded signal can be any number of channels, from a mono signal to the maximum of 5.1 (front right, center, front left, surround right, surround left, subwoofer) although it has now become common to use Dolby Digital to refer to any 5.1 signal.
Discrete digital surround sound format based on Dolby's AC-3 compression scheme to be found on DVDs, some laserdiscs and digital television (see 5.1 and AC-3).
Also known as Dolby Digital 5.1. Dolby Digital is a six-channel surround system found on many DVDs which sends discrete audio information to speakers at front left, front right, front center, rear left, rear right and a dedicated bass speaker, known as a 'subwoofer'. It is this bass (or LFE) channel which provides Dolby Digital 5.1, the '.1' part of it's name.
A system of five-channel surround sound for motion pictures, based on Dolby AC-3 perceptual coding.
An advanced form of compression which allows up to 6 channels of discrete sound to be placed onto a DVD in the form of a single datastream. This sound format is also going to be incorporated into HDTV broadcasting as the standard. If you don't have Dolby Digital-decoding equipment, most DVD players will downmix the sound to 2 channels.
Using a special encoding and decoding process, Dolby Digital allows the movie producer to place full-range dialog, music, and effects anywhere in the listening environment. In order to enjoy Dolby Digital (also know as AC-3) a processor capable of decoding the digital signal must be used. DVD players, Laser Disc Players, DSS receivers, and HDTV set-top boxes are all capable of providing you with the source material for Dolby Digital surround sound.
Also known as AC-3. A high-quality, bandwidth efficient perceptual audio coding system originally developed by Dolby Laboratories for multi-channel digital sound in the cinema. It can be used in broadcast, cable, film and recorded media in both professional and consumer applications. Dolby Digital is one of the main audio formats used in DVD
Most DVD discs contain Dolby Digital soundtracks, but the soundtrack can be Mono, Dual Mono, Stereo or Dolby Surround.
This audio encoding format can apply to any number of audio channels on a DVD, ranging from five discrete channels of sound plus an effects channel for the subwoofer (Dolby Digital 5.1) all the way to simple one-channel mono sound (Dolby Digital 1.0). A number of variations exist in between, such as standard Dolby Surround (2.0 or 3.0), which supplies the same audio signal to both of the rear speakers in a home theater set up. Dolby Digital 5.0 is the same as 5.1 in that separate signals are channeled to the rear speakers, but there is no extra channel for the subwoofer.
An advanced form of digital audio coding that makes it possible to store and transmit high-quality digital sound far more efficiently than was previously possible.
Multi-channel digital bitstreaming audio, where the different channels play independently of each other and at different frequencies to provide a full “surround sound” experience.
The 5.1 digital surround-sound system designed by Dolby and employing its AC-3 digital coding. See Also DTS; Dolby Surround Sound
Dolby's name for its format for the digital soundtrack system for motion picture playback. Utilizes their AC-3 method of digital compression. The signal is optically printed between the sprocket holes. Introduced to Home Theater on laser disc and DVD and CD. Dolby Digital may use any number of primary audio delivery and reproduction channels, from 1 to 5, and may include a separate bass-only effects channel. The designation "5.1" describes the complete channel format. Surround decoder systems with Dolby Digital automatically contain Dolby Pro Logic processing to ensure full compatibility with the many existing program soundtracks made with Dolby Surround encoding.
Dolby Digital is the marketing name for a series of lossy audio compression technologies by Dolby Laboratories.