MPEG-4 CELP
E818777
MPEG-4 CELP is an audio coding algorithm that uses code-excited linear prediction to efficiently compress speech within the MPEG-4 multimedia framework.
All labels observed (2)
| Label | Occurrences |
|---|---|
| MPEG-4 CELP canonical | 2 |
| CELP | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9740678 — 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: MPEG-4 CELP Context triple: [ISO/IEC 14496-3, specifies, MPEG-4 CELP]
-
A.
Speex
Speex is an open-source, patent-free audio compression codec designed primarily for efficient, high-quality speech encoding.
-
B.
G.723.1
G.723.1 is an ITU-T audio codec standard designed for low-bit-rate voice compression, commonly used in VoIP and multimedia communication systems.
-
C.
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.
-
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.
G.726
G.726 is an ITU-T audio codec standard that specifies adaptive differential pulse-code modulation (ADPCM) for compressing voice signals at multiple bit rates, commonly used in telephony.
- 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: MPEG-4 CELP Target entity description: MPEG-4 CELP is an audio coding algorithm that uses code-excited linear prediction to efficiently compress speech within the MPEG-4 multimedia framework.
-
A.
Speex
Speex is an open-source, patent-free audio compression codec designed primarily for efficient, high-quality speech encoding.
-
B.
G.723.1
G.723.1 is an ITU-T audio codec standard designed for low-bit-rate voice compression, commonly used in VoIP and multimedia communication systems.
-
C.
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.
-
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.
G.726
G.726 is an ITU-T audio codec standard that specifies adaptive differential pulse-code modulation (ADPCM) for compressing voice signals at multiple bit rates, commonly used in telephony.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
MPEG-4 audio tool
ⓘ
audio coding algorithm ⓘ speech codec ⓘ |
| basedOn | linear predictive coding ⓘ |
| belongsToFamily | CELP codecs ⓘ |
| bitrateCharacteristic | low bitrate ⓘ |
| codingParadigm |
analysis-by-synthesis coding
ⓘ
codebook-based coding ⓘ |
| compatibleWith |
MPEG-4 systems layer
ⓘ
linked to:
ISO/IEC 14496
|
| compressionDomain | time-domain speech signal ⓘ |
| compressionEfficiency | higher than legacy waveform coders at similar bitrates ⓘ |
| compressionType | lossy compression ⓘ |
| designFocus | robustness to transmission errors ⓘ |
| domain |
digital audio coding
ⓘ
multimedia communications ⓘ |
| excitationType | codebook-excited signal ⓘ |
| goal |
efficient speech compression at low bitrates
ⓘ
good speech quality at low bitrates ⓘ |
| intendedUseEnvironment | bandwidth-constrained networks ⓘ |
| operatesOn |
narrowband speech
ⓘ
wideband speech ⓘ |
| optimizationCriterion | minimization of perceptual error ⓘ |
| partOf |
MPEG-4 Audio
ⓘ
MPEG-4 multimedia framework ⓘ
linked to:
MPEG-4
|
| partOfStandard | MPEG-4 ⓘ |
| primaryApplication |
low-bitrate speech coding
ⓘ
speech compression ⓘ |
| relatedTo |
MPEG-4 AAC
ⓘ
linked to:
MPEG-4 Audio
MPEG-4 HVXC ⓘ
linked to:
MPEG-4
|
| representation | parametric representation of speech ⓘ |
| signalModel | source-filter model of speech ⓘ |
| standardizedBy |
ISO/IEC
ⓘ
MPEG (Moving Picture Experts Group) ⓘ
linked to:
MPEG
|
| supports |
real-time decoding
ⓘ
real-time encoding ⓘ |
| targetContentType | speech ⓘ |
| usedIn |
interactive communication services
ⓘ
multimedia streaming ⓘ voice over IP applications ⓘ |
| uses |
adaptive codebook
ⓘ
excitation codebook ⓘ fixed codebook ⓘ frame-based processing ⓘ linear prediction filter ⓘ quantization of model parameters ⓘ quantized LPC coefficients ⓘ |
| usesAlgorithm | code-excited linear prediction ⓘ |
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: MPEG-4 CELP Description of subject: MPEG-4 CELP is an audio coding algorithm that uses code-excited linear prediction to efficiently compress speech within the MPEG-4 multimedia framework.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.