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.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| CELP | 1 |
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 NERFINISHED ⓘ |
| 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
NERFINISHED
ⓘ
MPEG-4 multimedia framework NERFINISHED ⓘ |
| partOfStandard | MPEG-4 NERFINISHED ⓘ |
| primaryApplication |
low-bitrate speech coding
ⓘ
speech compression ⓘ |
| relatedTo |
MPEG-4 AAC
NERFINISHED
ⓘ
MPEG-4 HVXC NERFINISHED ⓘ |
| representation | parametric representation of speech ⓘ |
| signalModel | source-filter model of speech ⓘ |
| standardizedBy |
ISO/IEC
NERFINISHED
ⓘ
MPEG (Moving Picture Experts Group) NERFINISHED ⓘ |
| 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 ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.