Dolby A
E309487
Dolby A is an early professional audio noise reduction system developed by Dolby Laboratories, widely used in analog recording and film sound before later Dolby formats superseded it.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Dolby A canonical | 3 |
| Dolby Type A | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2909067 — 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 A Context triple: [Dolby SR, predecessor, Dolby A]
-
A.
Dolby Audio
Dolby Audio is a suite of advanced audio processing technologies designed to deliver clearer, more immersive, and dynamically optimized sound across consumer devices and media.
-
B.
Dolby Stereo
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.
-
C.
Dolby SR
Dolby SR is an advanced professional analog noise reduction system developed by Dolby Laboratories to significantly improve the dynamic range and sound quality of film and audio recordings.
-
D.
Dolby Digital
Dolby Digital is a multichannel digital audio encoding system widely used in cinema, home theater, and broadcast to deliver surround sound.
-
E.
Dolby Digital 5.1
Dolby Digital 5.1 is a surround sound audio format that delivers multichannel cinematic audio through five full-bandwidth speakers and one low-frequency effects channel.
- 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 A Target entity description: Dolby A is an early professional audio noise reduction system developed by Dolby Laboratories, widely used in analog recording and film sound before later Dolby formats superseded it.
-
A.
Dolby Audio
Dolby Audio is a suite of advanced audio processing technologies designed to deliver clearer, more immersive, and dynamically optimized sound across consumer devices and media.
-
B.
Dolby Stereo
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.
-
C.
Dolby SR
Dolby SR is an advanced professional analog noise reduction system developed by Dolby Laboratories to significantly improve the dynamic range and sound quality of film and audio recordings.
-
D.
Dolby Digital
Dolby Digital is a multichannel digital audio encoding system widely used in cinema, home theater, and broadcast to deliver surround sound.
-
E.
Dolby Digital 5.1
Dolby Digital 5.1 is a surround sound audio format that delivers multichannel cinematic audio through five full-bandwidth speakers and one low-frequency effects channel.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
audio noise reduction system
ⓘ
professional audio equipment ⓘ |
| alsoKnownAs |
Dolby Type A
ⓘ
linked to:
Dolby A
|
| appliesTo | magnetic tape recording ⓘ |
| audioDomain | analog ⓘ |
| bandType | sliding-band ⓘ |
| channelConfiguration | two-channel ⓘ |
| componentOf |
Dolby professional noise reduction family
ⓘ
linked to:
Dolby A-type noise reduction
|
| countryOfOrigin | United Kingdom ⓘ |
| designedBy | Ray Dolby ⓘ |
| designedFor |
35 mm optical soundtracks (via encoding to print masters)
ⓘ
studio master recordings ⓘ |
| developer | Dolby Laboratories ⓘ |
| dynamicRangeImprovement | approximately 10 dB ⓘ |
| eraOfWidespreadUse |
1970s
ⓘ
1980s ⓘ late 1960s ⓘ |
| frequencyRangeTarget | mid and high audio frequencies ⓘ |
| historicalSignificance | early standard for professional noise reduction in analog recording ⓘ |
| inception | 1965 ⓘ |
| influenced | later Dolby noise reduction formats ⓘ |
| introducedAs |
Dolby Laboratories first professional noise reduction system
ⓘ
linked to:
Dolby A-type noise reduction
|
| marketSegment |
broadcast facilities
ⓘ
film dubbing stages ⓘ professional studios ⓘ |
| noiseReductionType |
compander
ⓘ
encode-decode system ⓘ |
| numberOfBands | four ⓘ |
| operatingPrinciple |
de-emphasis during playback
ⓘ
pre-emphasis during recording ⓘ |
| primaryFunction |
improve signal-to-noise ratio
ⓘ
reduce tape hiss ⓘ |
| processingMethod | multi-band compression and expansion ⓘ |
| relatedTo |
Dolby B
ⓘ
Dolby C ⓘ |
| requires | matching encoder and decoder ⓘ |
| status | largely obsolete ⓘ |
| supersededBy |
Dolby S
ⓘ
Dolby SR ⓘ |
| targetUsers |
film sound mixers
ⓘ
recording engineers ⓘ |
| typicalFormat | outboard rack-mounted unit ⓘ |
| use |
broadcast audio
ⓘ
film sound production ⓘ professional analog recording ⓘ |
| usedOn |
film magnetic dubbers
ⓘ
professional multitrack recorders ⓘ stereo mixdown recorders ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Dolby A Description of subject: Dolby A is an early professional audio noise reduction system developed by Dolby Laboratories, widely used in analog recording and film sound before later Dolby formats superseded it.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Dolby A