Dolby B
E311868
Dolby B is an early consumer noise-reduction system for analog cassette tapes that reduces tape hiss by boosting and then compressing high-frequency audio signals.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T2909069 — 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 B Context triple: [Dolby SR, relatedTo, Dolby B]
-
A.
Dolby A
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system developed by Dolby Laboratories, widely used in analog recording and film sound before later Dolby formats superseded it.
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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.
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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.
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D.
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.
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E.
Dolby Digital
Dolby Digital is a multichannel digital audio encoding system widely used in cinema, home theater, and broadcast to deliver surround sound.
- 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 B Target entity description: Dolby B is an early consumer noise-reduction system for analog cassette tapes that reduces tape hiss by boosting and then compressing high-frequency audio signals.
-
A.
Dolby A
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system developed by Dolby Laboratories, widely used in analog recording and film sound before later Dolby formats superseded it.
-
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 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.
-
E.
Dolby Digital
Dolby Digital is a multichannel digital audio encoding system widely used in cinema, home theater, and broadcast to deliver surround sound.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
audio signal processing technology
ⓘ
noise reduction system ⓘ |
| appliesTo |
analog cassette tapes
ⓘ
magnetic tape recordings ⓘ |
| brandMarking |
Dolby S noise reduction
ⓘ
surface form:
Dolby NR
|
| compatibilityNote | playback on non-Dolby equipment is possible but with altered frequency balance ⓘ |
| compressionCharacteristic | level-dependent high-frequency compression ⓘ |
| designGoal | reduce audible hiss without significantly affecting perceived audio quality ⓘ |
| developer | Dolby Laboratories ⓘ |
| domain | audio engineering ⓘ |
| era | analog audio era ⓘ |
| intendedFor |
compact cassette format
ⓘ
consumer audio equipment ⓘ |
| introducedAs | early consumer noise-reduction system ⓘ |
| marketAdoption | widely adopted in consumer cassette decks ⓘ |
| namedAfter | Dolby Laboratories ⓘ |
| noiseReductionType | companding system ⓘ |
| operatingPrinciple | encode high frequencies at higher level and decode them back to normal level ⓘ |
| partOf | Dolby noise reduction family ⓘ |
| playbackCharacteristic | level-dependent high-frequency expansion ⓘ |
| predecessorOf |
Dolby C
ⓘ
Dolby S ⓘ |
| primaryFunction |
improve signal-to-noise ratio
ⓘ
reduce tape hiss ⓘ |
| relativePerformance |
provides less noise reduction than Dolby C
ⓘ
provides less noise reduction than Dolby S ⓘ |
| targetFrequencyRange | high-frequency audio band ⓘ |
| typicalUseCase |
home cassette recording
ⓘ
music cassette playback ⓘ portable cassette players ⓘ |
| usedIn |
car cassette players
ⓘ
cassette decks ⓘ portable cassette recorders ⓘ |
| usesTechnique |
complementary de-emphasis and expansion during playback
ⓘ
compression of high-frequency audio signals during recording ⓘ pre-emphasis of high-frequency audio signals ⓘ |
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 B Description of subject: Dolby B is an early consumer noise-reduction system for analog cassette tapes that reduces tape hiss by boosting and then compressing high-frequency audio signals.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Dolby C