Dolby Stereo

E10319

film sound system multichannel audio format

Dolby Stereo is a multichannel optical sound system for film that brought high-fidelity, surround-capable audio to movie theaters in the 1970s and 1980s.

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All labels observed (6)

Label	Occurrences
Dolby Surround	8
Dolby Stereo canonical	6
Dolby SVA	1
Dolby Stereo (analog matrix system)	1
Dolby System	1
Dolby motion picture sound systems	1

How this entity was disambiguated

This entity first appeared as the object of triple T93328 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Dolby Stereo
Context triple: [Ray Dolby, notableFor, Dolby Stereo]

A. Ray Dolby
Ray Dolby was an American engineer and inventor best known for pioneering noise reduction and surround sound technologies that revolutionized the audio industry.
B. Audion
Audion is an early triode vacuum tube invented by Lee de Forest that enabled the amplification of electrical signals and was crucial to the development of radio and electronics.
C. Ampex
Ampex is an American electronics company renowned for pioneering professional audio and video tape recording technology.
D. IMAX
IMAX is a high-resolution large-format cinema technology known for its giant screens, immersive sound, and specialized cameras used for premium theatrical presentations.
E. Vitaphone
Vitaphone was an early sound-on-disc motion picture system developed by Warner Bros. that played a key role in the transition from silent films to “talkies” in the late 1920s.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Dolby Stereo
Target entity description: Dolby Stereo is a multichannel optical sound system for film that brought high-fidelity, surround-capable audio to movie theaters in the 1970s and 1980s.

A. Ray Dolby
Ray Dolby was an American engineer and inventor best known for pioneering noise reduction and surround sound technologies that revolutionized the audio industry.
B. Audion
Audion is an early triode vacuum tube invented by Lee de Forest that enabled the amplification of electrical signals and was crucial to the development of radio and electronics.
C. Ampex
Ampex is an American electronics company renowned for pioneering professional audio and video tape recording technology.
D. IMAX
IMAX is a high-resolution large-format cinema technology known for its giant screens, immersive sound, and specialized cameras used for premium theatrical presentations.
E. Vitaphone
Vitaphone was an early sound-on-disc motion picture system developed by Warner Bros. that played a key role in the transition from silent films to “talkies” in the late 1920s.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	film sound system ⓘ multichannel audio format ⓘ
alsoKnownAs	Dolby Stereo ⓘ surface form: Dolby SVA
applicationDomain	motion picture sound ⓘ
audioChannels	4-channel ⓘ
category	cinema audio technology ⓘ surround sound formats ⓘ
centerChannelPurpose	dialogue localization ⓘ
channelConfiguration	Center ⓘ Left ⓘ Right ⓘ Surround ⓘ
commercialStatus	proprietary system ⓘ
compatibility	mono optical projectors (downmix) ⓘ
countryOfOrigin	United States of America ⓘ surface form: United States
decodingMethod	matrix decoding ⓘ
designedFor	optical soundtracks on film prints ⓘ
developer	Dolby Laboratories ⓘ
earlyNotableFilm	Close Encounters of the Third Kind (1977 film) ⓘ Star Wars: Episode IV – A New Hope ⓘ surface form: Star Wars (1977 film)
encodingMethod	matrix encoding ⓘ two-channel optical track with matrixed four channels ⓘ
eraOfWidespreadUse	1980s ⓘ late 1970s ⓘ
feature	backward compatibility with mono optical readers ⓘ compatibility with standard two-channel optical tracks ⓘ high-fidelity audio ⓘ
firstMajorReleaseUsingFormat	A Star Is Born (1976 film) ⓘ
goal	improve sound quality in movie theaters ⓘ provide surround-capable audio using existing optical tracks ⓘ
influenced	home surround formats such as Dolby Surround ⓘ
introducedInDecade	1970s ⓘ
introducedYear	1975 ⓘ
marketedAs	Dolby Stereo self-linksurface differs ⓘ surface form: Dolby System
opticalSoundtrackType	analog optical ⓘ
primaryMedium	35 mm film ⓘ
primaryUse	cinema exhibition ⓘ
supersededBy	Dolby Digital ⓘ Dolby SR ⓘ
supports	surround sound ⓘ
supportsPlaybackOn	cinema sound systems ⓘ
surroundChannelPurpose	ambient and effects sound ⓘ
surroundChannelType	single mono surround channel ⓘ
SVAExpansion	Stereo Variable-Area ⓘ
usesTechnology	Dolby A-type noise reduction ⓘ Dolby Laboratories ⓘ surface form: Dolby noise reduction