AAC-LD
E818769
AAC-LD is a low-delay variant of the Advanced Audio Coding format designed for high-quality, real-time audio communication such as video conferencing and interactive broadcasting.
All labels observed (1)
| Label | Occurrences |
|---|---|
| AAC-LD canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9740588 — 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: AAC-LD Context triple: [Advanced Audio Coding, hasProfile, AAC-LD]
-
A.
ATSC
ATSC (Advanced Television Systems Committee) is a digital television broadcasting standard used primarily in North America for over-the-air high-definition TV transmission.
-
B.
ATSC 3.0
ATSC 3.0 is the latest generation digital television broadcasting standard that enables 4K UHD video, immersive audio, interactive services, and improved reception for over-the-air TV.
-
C.
ATSC A/52
ATSC A/52 is the Advanced Television Systems Committee standard that defines the digital audio compression format commonly known as Dolby Digital (AC-3) for digital television and related media.
-
D.
Dolby AC-4
Dolby AC-4 is an advanced audio codec designed for next-generation broadcast and streaming, offering high-efficiency compression, immersive and personalized sound, and support for modern formats like UHD and HDR video services.
-
E.
AES70
AES70 is an open standard from the Audio Engineering Society that defines a networked control and monitoring protocol for professional audio and media devices.
- 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: AAC-LD Target entity description: AAC-LD is a low-delay variant of the Advanced Audio Coding format designed for high-quality, real-time audio communication such as video conferencing and interactive broadcasting.
-
A.
ATSC
ATSC (Advanced Television Systems Committee) is a digital television broadcasting standard used primarily in North America for over-the-air high-definition TV transmission.
-
B.
ATSC 3.0
ATSC 3.0 is the latest generation digital television broadcasting standard that enables 4K UHD video, immersive audio, interactive services, and improved reception for over-the-air TV.
-
C.
ATSC A/52
ATSC A/52 is the Advanced Television Systems Committee standard that defines the digital audio compression format commonly known as Dolby Digital (AC-3) for digital television and related media.
-
D.
Dolby AC-4
Dolby AC-4 is an advanced audio codec designed for next-generation broadcast and streaming, offering high-efficiency compression, immersive and personalized sound, and support for modern formats like UHD and HDR video services.
-
E.
AES70
AES70 is an open standard from the Audio Engineering Society that defines a networked control and monitoring protocol for professional audio and media devices.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Advanced Audio Coding profile
ⓘ
audio codec ⓘ low-delay audio coding format ⓘ |
| abbreviationOf | Advanced Audio Coding Low Delay ⓘ |
| audioBandwidth | up to 20 kHz depending on configuration ⓘ |
| basedOn | AAC ⓘ |
| belongsToCategory |
MPEG audio codecs
ⓘ
linked to:
MPEG-4 Audio
real-time communication codecs ⓘ |
| bitrateRange | typically from low to medium bitrates suitable for communication links ⓘ |
| comparedTo |
AAC-LC
ⓘ
linked to:
Advanced Audio Coding
|
| compressionDomain | time-frequency domain ⓘ |
| compressionType | perceptual transform coding ⓘ |
| designGoal |
enable natural interactive conversations
ⓘ
maintain high subjective audio quality ⓘ minimize end-to-end latency ⓘ |
| differenceFrom | AAC-LC has higher coding delay ⓘ |
| feature |
backward compatibility with AAC tools
ⓘ
high audio quality at low delay ⓘ lossy compression ⓘ low algorithmic delay ⓘ perceptual audio coding ⓘ support for full-band audio ⓘ |
| fullName |
Advanced Audio Coding Low Delay
ⓘ
linked to:
Advanced Audio Coding
|
| optimizedFor | two-way interactive communication ⓘ |
| partOfFamily |
MPEG-4 AAC
ⓘ
linked to:
MPEG-4 Audio
|
| relatedTo |
AAC-ELD
ⓘ
AAC-LC ⓘ
linked to:
Advanced Audio Coding
HE-AAC ⓘ |
| standardizedBy | ISO/IEC ⓘ |
| standardNumber | ISO/IEC 14496-3 ⓘ |
| supports |
mono audio
ⓘ
multichannel audio ⓘ stereo audio ⓘ |
| supportsSamplingRates | up to 48 kHz ⓘ |
| targetUse |
VoIP
ⓘ
interactive broadcasting ⓘ real-time audio communication ⓘ telepresence systems ⓘ video conferencing ⓘ |
| typicalDelay | around 20 ms to 40 ms algorithmic delay ⓘ |
| usedIn |
IP-based audio links
ⓘ
broadcast contribution links ⓘ professional conferencing systems ⓘ |
| uses |
modified discrete cosine transform
ⓘ
prediction tools adapted for low delay ⓘ psychoacoustic model ⓘ temporal noise shaping ⓘ |
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: AAC-LD Description of subject: AAC-LD is a low-delay variant of the Advanced Audio Coding format designed for high-quality, real-time audio communication such as video conferencing and interactive broadcasting.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.