Dolby Digital

E64199

Dolby Digital is a multichannel digital audio encoding system widely used in cinema, home theater, and broadcast to deliver surround sound.


Statements (51)
Predicate Object
instanceOf audio coding format
surround sound technology
alsoKnownAs AC-3
Dolby AC-3
audioChannels 5.1
audioCodingFamily transform coding
bluRayMaxBitrate 640 kbit/s
channelLayout Center
Left
Left surround
Low-frequency effects
Right
Right surround
compressionType lossy
countryOfOrigin United States
developer Dolby Laboratories
dvdVideoMaxBitrate 448 kbit/s
fileExtension .ac3
introducedInDecade 1990s
maximumBitrate 640 kbit/s
mediaType broadcast audio
cinema sound
home theater sound
predecessor Dolby Stereo
primaryUseCase home theater audio
multichannel TV audio
surround sound for films
standardizedBy ATSC
Blu-ray Disc Association
DVD Forum
successor Dolby Digital Plus
Dolby TrueHD
supportsChannelConfiguration 2.0
3.0
4.0
5.1
6.1 matrix
mono
stereo
supportsLFEChannel yes
supportsSampleRate 32 kHz
44.1 kHz
48 kHz
typicalBitrateRange 32 kbit/s to 640 kbit/s
usedIn Blu-ray Disc
DVD-Video
cinema soundtracks
digital television
game consoles
streaming services
usesTransform MDCT


Please wait…