Enhanced Audio Return Channel (eARC, from HDMI 2.1)
E486627
Enhanced Audio Return Channel (eARC) is an HDMI 2.1 feature that enables high-bandwidth, lossless audio formats like Dolby TrueHD and DTS-HD Master Audio to be sent from a TV to an external audio device such as a soundbar or AV receiver.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Enhanced Audio Return Channel (eARC, from HDMI 2.1) canonical | 1 |
| HDMI ARC | 1 |
| eARC (HDMI) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5015932 — 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: Enhanced Audio Return Channel (eARC, from HDMI 2.1) Context triple: [HDMI, supports, Enhanced Audio Return Channel (eARC, from HDMI 2.1)]
-
A.
Dolby Vision
Dolby Vision is a high-dynamic-range (HDR) imaging technology that enhances video with greater brightness, contrast, and color accuracy for a more lifelike viewing experience.
-
B.
HDR10
HDR10 is an open high-dynamic-range video standard that uses static metadata to deliver enhanced brightness, contrast, and color compared to standard dynamic range content.
-
C.
HDMI
HDMI (High-Definition Multimedia Interface) is a widely used digital standard for transmitting high-definition audio and video between devices such as media players, computers, and displays over a single cable.
-
D.
HDMI-CEC
HDMI-CEC is a feature of HDMI that allows interconnected devices to control each other’s basic functions over a single HDMI cable, enabling unified remote control and coordinated power and playback.
-
E.
Dolby Digital Plus
Dolby Digital Plus is an advanced multichannel audio codec developed by Dolby Laboratories that offers higher efficiency, improved sound quality, and greater flexibility for modern broadcast, streaming, and disc-based media.
- 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: Enhanced Audio Return Channel (eARC, from HDMI 2.1) Target entity description: Enhanced Audio Return Channel (eARC) is an HDMI 2.1 feature that enables high-bandwidth, lossless audio formats like Dolby TrueHD and DTS-HD Master Audio to be sent from a TV to an external audio device such as a soundbar or AV receiver.
-
A.
Dolby Vision
Dolby Vision is a high-dynamic-range (HDR) imaging technology that enhances video with greater brightness, contrast, and color accuracy for a more lifelike viewing experience.
-
B.
HDR10
HDR10 is an open high-dynamic-range video standard that uses static metadata to deliver enhanced brightness, contrast, and color compared to standard dynamic range content.
-
C.
HDMI
HDMI (High-Definition Multimedia Interface) is a widely used digital standard for transmitting high-definition audio and video between devices such as media players, computers, and displays over a single cable.
-
D.
HDMI-CEC
HDMI-CEC is a feature of HDMI that allows interconnected devices to control each other’s basic functions over a single HDMI cable, enabling unified remote control and coordinated power and playback.
-
E.
Dolby Digital Plus
Dolby Digital Plus is an advanced multichannel audio codec developed by Dolby Laboratories that offers higher efficiency, improved sound quality, and greater flexibility for modern broadcast, streaming, and disc-based media.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
HDMI feature
ⓘ
digital audio interface protocol ⓘ |
| abbreviation | eARC ⓘ |
| allows | TV to act as audio source device ⓘ |
| alsoKnownAs | eARC (HDMI) ⓘ |
| backwardsCompatibleWith | ARC in limited mode ⓘ |
| category | consumer electronics technology ⓘ |
| compatibleWith | Ultra High Speed HDMI cables ⓘ |
| designedFor |
AV receivers
ⓘ
home theater systems ⓘ soundbars ⓘ |
| enables |
sending HDMI source audio connected to TV to external audio device
ⓘ
sending TV app audio to external sound system ⓘ sending over-the-air broadcast audio to external sound system ⓘ simplified single-cable connection between TV and audio system ⓘ |
| follows | Audio Return Channel ⓘ |
| hasMaximumBandwidth | up to 37 Mbps ⓘ |
| improvesUpon |
Audio Return Channel bandwidth
ⓘ
Audio Return Channel format support ⓘ Audio Return Channel lip-sync handling ⓘ |
| introducedWith |
HDMI 2.1
ⓘ
linked to:
HDMI
|
| mayWorkWith | High Speed HDMI cables under some conditions ⓘ |
| partOf | HDMI 2.1 specification ⓘ |
| primaryUseCase | return audio from TV to external audio system ⓘ |
| provides | automatic lip-sync correction ⓘ |
| relatedTo |
Consumer Electronics Control
ⓘ
linked to:
HDMI-CEC
HDMI 2.1 fixed rate link ⓘ HDMI ARC ⓘ |
| requires |
HDMI connection between TV and audio device
ⓘ
eARC-compatible TV ⓘ eARC-compatible audio device ⓘ |
| standardizedBy | HDMI Forum ⓘ |
| supports |
DTS-HD Master Audio
ⓘ
Dolby Atmos via Dolby TrueHD ⓘ
linked to:
Dolby Atmos
Dolby TrueHD ⓘ high-bandwidth audio return ⓘ high-bitrate audio streams ⓘ lossless multichannel audio ⓘ metadata for advanced audio formats ⓘ object-based audio formats ⓘ uncompressed 5.1-channel PCM audio ⓘ uncompressed 7.1-channel PCM audio ⓘ |
| transportLayer | HDMI physical layer ⓘ |
| uses |
HDMI cable connection
ⓘ
dedicated eARC data channel ⓘ enhanced audio discovery and control mechanisms ⓘ |
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: Enhanced Audio Return Channel (eARC, from HDMI 2.1) Description of subject: Enhanced Audio Return Channel (eARC) is an HDMI 2.1 feature that enables high-bandwidth, lossless audio formats like Dolby TrueHD and DTS-HD Master Audio to be sent from a TV to an external audio device such as a soundbar or AV receiver.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Enhanced Audio Return Channel (eARC, from HDMI 2.1)
linked to: Enhanced Audio Return Channel (eARC, from HDMI 2.1)
subject linked to:
Enhanced Audio Return Channel (eARC, from HDMI 2.1)
linked to: Enhanced Audio Return Channel (eARC, from HDMI 2.1)