G.729
E95665
G.729 is a widely used ITU-T audio codec standard that compresses voice for bandwidth-efficient transmission in VoIP and other telephony applications.
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
ITU-T Recommendation
ⓘ
audio codec standard ⓘ speech codec ⓘ |
| algorithmicDelay | 15 ms ⓘ |
| annexAFeature | reduced complexity ⓘ |
| annexBFeature |
comfort noise
ⓘ
silence compression ⓘ |
| annexDFeature | 6.4 kbit/s operation ⓘ |
| annexEFeature | 11.8 kbit/s operation ⓘ |
| annexHFeature | variable bit-rate coding ⓘ |
| applicationDomain |
Voice over IP
ⓘ
bandwidth-constrained networks ⓘ packet-switched telephony ⓘ |
| bandwidth | 300–3400 Hz ⓘ |
| bitRate | 8 kbit/s ⓘ |
| category | narrowband codec ⓘ |
| codingAlgorithm | Conjugate-Structure Algebraic-Code-Excited Linear Prediction ⓘ |
| codingAlgorithmAbbreviation | CS-ACELP NERFINISHED ⓘ |
| compressionType | lossy compression ⓘ |
| designedFor | bandwidth-efficient transmission ⓘ |
| focusesOn | narrowband speech coding ⓘ |
| frameDuration | 10 ms ⓘ |
| frameSize | 80 samples ⓘ |
| hasAnnex |
G.729 Annex A
NERFINISHED
ⓘ
G.729 Annex B NERFINISHED ⓘ G.729 Annex D NERFINISHED ⓘ G.729 Annex E NERFINISHED ⓘ G.729 Annex H NERFINISHED ⓘ G.729 Annex I NERFINISHED ⓘ G.729 Annex J NERFINISHED ⓘ G.729 Annex K NERFINISHED ⓘ |
| lookAhead | 5 ms ⓘ |
| maintainedBy | ITU-T NERFINISHED ⓘ |
| optimizedFor | low bit-rate speech transmission ⓘ |
| relatedStandard |
G.711
NERFINISHED
ⓘ
G.723.1 NERFINISHED ⓘ G.726 NERFINISHED ⓘ |
| samplingRate | 8000 Hz ⓘ |
| standardizedBy | ITU-T Study Group 16 NERFINISHED ⓘ |
| supports |
comfort noise generation
ⓘ
discontinuous transmission ⓘ real-time voice communication ⓘ toll-quality speech at 8 kbit/s ⓘ voice activity detection ⓘ |
| usedIn |
IP telephony gateways
ⓘ
VoIP handsets ⓘ enterprise VoIP systems ⓘ softphones ⓘ |
| uses |
algebraic codebook
ⓘ
analysis-by-synthesis coding ⓘ linear prediction ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.