Dolby C noise reduction
E306653
Dolby C noise reduction is an advanced analog cassette noise-reduction system developed by Dolby Laboratories that provides greater high-frequency noise reduction and dynamic range improvement than the earlier Dolby B system.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Dolby C noise reduction canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2849633 — 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 C noise reduction Context triple: [Dolby A-type noise reduction, distinguishedFrom, Dolby C noise reduction]
-
A.
Dolby B noise reduction
Dolby B noise reduction is a consumer-oriented analog tape noise reduction system designed to reduce high-frequency hiss on cassette recordings while maintaining compatibility with standard playback equipment.
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B.
Dolby A-type noise reduction
Dolby A-type noise reduction is a professional analog audio noise reduction system developed by Dolby Laboratories to reduce tape hiss in recording and film sound.
-
C.
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.
-
D.
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.
-
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 C noise reduction Target entity description: Dolby C noise reduction is an advanced analog cassette noise-reduction system developed by Dolby Laboratories that provides greater high-frequency noise reduction and dynamic range improvement than the earlier Dolby B system.
-
A.
Dolby B noise reduction
Dolby B noise reduction is a consumer-oriented analog tape noise reduction system designed to reduce high-frequency hiss on cassette recordings while maintaining compatibility with standard playback equipment.
-
B.
Dolby A-type noise reduction
Dolby A-type noise reduction is a professional analog audio noise reduction system developed by Dolby Laboratories to reduce tape hiss in recording and film sound.
-
C.
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.
-
D.
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.
-
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 (45)
| Predicate | Object |
|---|---|
| instanceOf | analog cassette noise-reduction system ⓘ |
| aimsToReduce | tape hiss ⓘ |
| appliesTo |
analog magnetic tape recording
ⓘ
compact cassette ⓘ |
| brand |
Dolby Laboratories
ⓘ
surface form:
Dolby
|
| category |
audio signal processing technology
ⓘ
noise reduction system ⓘ |
| comparedTo | Dolby B noise reduction ⓘ |
| compatibility | partially compatible with Dolby B playback ⓘ |
| component |
playback-side decoder
ⓘ
recording-side encoder ⓘ |
| designedFor |
consumer audio equipment
ⓘ
high-fidelity cassette decks ⓘ |
| developer | Dolby Laboratories ⓘ |
| effectOnPlaybackWithoutDecoding |
brighter sound
ⓘ
emphasized high frequencies ⓘ |
| encodingType | companding ⓘ |
| field | audio engineering ⓘ |
| follows | Dolby B noise reduction ⓘ |
| hasAbbreviation | Dolby C ⓘ |
| hasGreaterNoiseReductionThan | Dolby B noise reduction ⓘ |
| improves | signal-to-noise ratio of cassette recordings ⓘ |
| introducedInPeriod | early 1980s ⓘ |
| marketedAs | advanced version of Dolby B ⓘ |
| noiseReductionAmount | approximately 15 dB at high frequencies ⓘ |
| obsoletedBy | digital audio formats ⓘ |
| operatesOn |
audio signal level
ⓘ
high-frequency bands ⓘ |
| precedes | Dolby S noise reduction ⓘ |
| purpose |
high-frequency noise reduction
ⓘ
improvement of dynamic range ⓘ |
| requires |
Dolby C capable playback device
ⓘ
Dolby-licensed circuitry ⓘ matching encoding and decoding ⓘ proper calibration of tape deck ⓘ |
| status | largely obsolete ⓘ |
| targetMedium |
chrome cassette tapes
ⓘ
ferric cassette tapes ⓘ metal cassette tapes ⓘ |
| usedIn |
home cassette recording
ⓘ
pre-recorded music cassettes ⓘ |
| usedWith | stereo cassette decks ⓘ |
| uses |
dual-band companding
ⓘ
pre-emphasis and de-emphasis ⓘ sliding-band techniques ⓘ |
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 C noise reduction Description of subject: Dolby C noise reduction is an advanced analog cassette noise-reduction system developed by Dolby Laboratories that provides greater high-frequency noise reduction and dynamic range improvement than the earlier Dolby B system.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.