AC-3
E324963
AC-3 is a multichannel digital audio compression format developed by Dolby Laboratories, widely used for surround sound in cinema, DVD, and broadcast applications.
All labels observed (1)
| Label | Occurrences |
|---|---|
| AC-3 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T3078568 — 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: AC-3 Context triple: [Dolby Digital, alsoKnownAs, AC-3]
-
A.
ACO
ACO is the commonly used abbreviation for Allied Command Operations, one of NATO’s two strategic military commands responsible for planning and executing alliance operations.
-
B.
ACE
ACE (Altamont Corridor Express) is a commuter rail service in California’s San Joaquin Valley and East Bay that provides weekday trains between Stockton and San Jose.
-
C.
ACE
ACE is the commonly used acronym for Arts Council England, the national body that supports and funds arts and culture across England.
-
D.
ACE
ACE is the IATA airport code for Lanzarote Airport in Spain’s Canary Islands.
-
E.
ACE
ACE is a Canadian satellite mission focused on studying Earth's atmosphere and climate through detailed measurements of atmospheric chemistry.
- 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: AC-3 Target entity description: AC-3 is a multichannel digital audio compression format developed by Dolby Laboratories, widely used for surround sound in cinema, DVD, and broadcast applications.
-
A.
ACO
ACO is the commonly used abbreviation for Allied Command Operations, one of NATO’s two strategic military commands responsible for planning and executing alliance operations.
-
B.
ACE
ACE (Altamont Corridor Express) is a commuter rail service in California’s San Joaquin Valley and East Bay that provides weekday trains between Stockton and San Jose.
-
C.
ACE
ACE is the commonly used acronym for Arts Council England, the national body that supports and funds arts and culture across England.
-
D.
ACE
ACE is the IATA airport code for Lanzarote Airport in Spain’s Canary Islands.
-
E.
ACE
ACE is a Canadian satellite mission focused on studying Earth's atmosphere and climate through detailed measurements of atmospheric chemistry.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
audio codec
ⓘ
digital audio compression format ⓘ multichannel audio format ⓘ |
| alsoKnownAs | Dolby Digital ⓘ |
| audioCodingFamily |
Dolby Digital family
ⓘ
linked to:
Dolby Digital
|
| bitrateRange | 32 kbit/s to 640 kbit/s ⓘ |
| channelConfiguration |
5.1 surround sound
ⓘ
mono ⓘ stereo ⓘ |
| commonBitrate |
384 kbit/s
ⓘ
448 kbit/s ⓘ |
| compressionAlgorithm |
perceptual coding
ⓘ
transform coding ⓘ |
| compressionType | lossy compression ⓘ |
| developer | Dolby Laboratories ⓘ |
| fileExtension | .ac3 ⓘ |
| introducedBy | Dolby Laboratories in the 1990s ⓘ |
| LFEChannel | 0.1 channel in 5.1 configuration ⓘ |
| maxChannels | 6 ⓘ |
| predecessor |
Dolby Stereo (analog matrix system)
ⓘ
linked to:
Dolby Stereo
|
| primaryApplicationDomain | film and television audio distribution ⓘ |
| regionUse | worldwide ⓘ |
| samplingRateSupport |
32 kHz
ⓘ
44.1 kHz ⓘ 48 kHz ⓘ |
| standardizedIn |
ATSC digital television standard
ⓘ
DVD-Video specification ⓘ |
| successor |
Dolby Digital Plus (E-AC-3)
ⓘ
linked to:
Dolby Digital Plus
Dolby TrueHD ⓘ |
| supports |
low-frequency effects channel
ⓘ
multichannel audio ⓘ surround sound ⓘ |
| supportsFeature |
dialog normalization
ⓘ
downmix metadata ⓘ dynamic range compression metadata ⓘ |
| transport |
HDMI (compressed bitstream)
ⓘ
S/PDIF (compressed bitstream) ⓘ |
| typicalUse |
DVD audio
ⓘ
cinema sound ⓘ digital television broadcast audio ⓘ home theater audio ⓘ |
| usedIn |
Blu-ray Disc (legacy compatibility tracks)
ⓘ
DVD-Video discs ⓘ cinema digital soundtracks ⓘ digital cable television ⓘ digital satellite television ⓘ streaming video services (legacy and compatibility tracks) ⓘ |
| usesTransform | modified discrete cosine transform ⓘ |
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: AC-3 Description of subject: AC-3 is a multichannel digital audio compression format developed by Dolby Laboratories, widely used for surround sound in cinema, DVD, and broadcast applications.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.