Advanced Audio Coding
E236174
Advanced Audio Coding is a lossy digital audio compression format designed to provide better sound quality than MP3 at similar or lower bitrates and widely used in streaming, broadcasting, and multimedia applications.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Advanced Audio Coding canonical | 3 |
| AAC-LC | 2 |
| MPEG-4 AAC | 2 |
| MPEG-2 Advanced Audio Coding | 1 |
| MPEG-4 AAC tools | 1 |
| MPEG-4 Audio | 1 |
| MPEG-4 audio coding | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2125213 — 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: Advanced Audio Coding Context triple: [AAC, fullName, Advanced Audio Coding]
-
A.
G.722
G.722 is a wideband audio codec standard that provides higher-quality voice transmission than traditional narrowband codecs, commonly used in VoIP and teleconferencing applications.
-
B.
ALAC
ALAC is the At-Large Advisory Committee within ICANN that represents the interests of individual Internet users in global domain name policy development.
-
C.
aptX
aptX is an audio codec designed to deliver higher-quality, low-latency wireless sound, commonly used over Bluetooth connections for music and media streaming.
-
D.
G.729
G.729 is a widely used ITU-T audio codec standard that compresses voice for bandwidth-efficient transmission in VoIP and other telephony applications.
-
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: Advanced Audio Coding Target entity description: Advanced Audio Coding is a lossy digital audio compression format designed to provide better sound quality than MP3 at similar or lower bitrates and widely used in streaming, broadcasting, and multimedia applications.
-
A.
G.722
G.722 is a wideband audio codec standard that provides higher-quality voice transmission than traditional narrowband codecs, commonly used in VoIP and teleconferencing applications.
-
B.
ALAC
ALAC is the At-Large Advisory Committee within ICANN that represents the interests of individual Internet users in global domain name policy development.
-
C.
aptX
aptX is an audio codec designed to deliver higher-quality, low-latency wireless sound, commonly used over Bluetooth connections for music and media streaming.
-
D.
G.729
G.729 is a widely used ITU-T audio codec standard that compresses voice for bandwidth-efficient transmission in VoIP and other telephony applications.
-
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 (72)
| Predicate | Object |
|---|---|
| instanceOf |
audio coding format
ⓘ
digital audio codec ⓘ lossy audio compression format ⓘ |
| abbreviation | AAC ⓘ |
| commonlyUsedFor |
audio tracks in video files
ⓘ
broadcast audio ⓘ music streaming ⓘ |
| competesWith |
MPEG-1 Audio Layer III
ⓘ
surface form:
MP3
Opus ⓘ Vorbis ⓘ WMA ⓘ |
| compressionType | lossy ⓘ |
| containerFormat |
ADIF
ⓘ
ADTS ⓘ MPEG-4 container format ⓘ
surface form:
MPEG-4 Part 14
|
| definedInStandard |
ISO/IEC 13818-7
ⓘ
ISO/IEC 14496-3 ⓘ |
| designedToProvide | better sound quality than MP3 at similar or lower bitrates ⓘ |
| developedBy |
Bell Telephone Laboratories
ⓘ
surface form:
AT&T Bell Laboratories
Dolby Laboratories ⓘ Fraunhofer Institute for Integrated Circuits IIS ⓘ
surface form:
Fraunhofer IIS
Sony ⓘ
surface form:
Sony Corporation
|
| feature |
MDCT-based transform coding
ⓘ
intensity stereo coding ⓘ mid/side stereo coding ⓘ parametric stereo in HE-AAC v2 ⓘ perceptual audio coding ⓘ perceptual noise substitution ⓘ spectral band replication in HE-AAC ⓘ temporal noise shaping ⓘ |
| fileExtension |
.aac
ⓘ
.m4a ⓘ .mp4 ⓘ |
| hasProfile |
AAC
ⓘ
surface form:
AAC-ELD
Advanced Audio Coding self-linksurface differs ⓘ
surface form:
AAC-LC
AAC-LD ⓘ ER-AAC ⓘ ER-AAC ELD ⓘ HE-AAC ⓘ HE-AAC v2 ⓘ |
| licenseType | patent-encumbered ⓘ |
| optimizedFor | better quality at low and medium bitrates compared to MP3 ⓘ |
| partOfStandard |
MPEG-2
ⓘ
MPEG-4 ⓘ |
| patentPoolManagedBy | Via Licensing (historically) ⓘ |
| predecessor |
MPEG-1 Audio Layer III
ⓘ
surface form:
MP3
|
| standardizedBy |
ISO/IEC
ⓘ
MPEG ⓘ |
| successorTo |
MPEG-1 Audio Layer III
ⓘ
surface form:
MPEG-1 Layer III
|
| supports |
low-latency modes such as AAC-LD
ⓘ
mono audio ⓘ multichannel audio ⓘ sample rates from 8 kHz to 96 kHz ⓘ stereo audio ⓘ up to 48 audio channels in MPEG-4 AAC ⓘ |
| typicalBitrateRange | from about 16 kbit/s to over 320 kbit/s ⓘ |
| usedIn |
iTunes Store
ⓘ
surface form:
Apple iTunes Store
Blu-ray Disc format ⓘ
surface form:
Blu-ray Disc
DAB+ digital radio ⓘ DVB broadcasting standards ⓘ
surface form:
DVB digital television standards
YouTube ⓘ digital broadcasting ⓘ digital television ⓘ game consoles ⓘ internet radio ⓘ mobile devices ⓘ portable media players ⓘ smartphones ⓘ streaming media ⓘ tablets ⓘ video streaming services ⓘ |
| yearIntroduced | 1997 ⓘ |
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: Advanced Audio Coding Description of subject: Advanced Audio Coding is a lossy digital audio compression format designed to provide better sound quality than MP3 at similar or lower bitrates and widely used in streaming, broadcasting, and multimedia applications.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
MPEG-4 AAC
this entity surface form:
AAC-LC
this entity surface form:
MPEG-2 Advanced Audio Coding
this entity surface form:
MPEG-4 AAC
this entity surface form:
MPEG-4 audio coding
this entity surface form:
AAC-LC
this entity surface form:
MPEG-4 AAC tools