G.729
Sign in to saveG.729 is a royalty-free narrow-band vocoder-based audio data compression algorithm using a frame length of . It is officially described as Coding of speech at 8 kbit/s using code-excited linear prediction speech coding (CS-ACELP), and was introduced in 1996. The wide-band extension of G.729 is called G.729.1, which equals G.729 Annex J.
Key facts
- Technology standard.title
- G.729
- Technology standard.image
- Pcm.svg
- Technology standard.status
- In force
- Technology standard.version
- (10/17)
- Technology standard.version_date
- October 2017
- Technology standard.organization
- ITU-T
- Technology standard.committee
- ITU-T Study Group 16
- Technology standard.related_standards
- G.191, G.711, G.729.1
- Technology standard.domain
- audio compression
- Technology standard.license
- Freely available
- Technology standard.website
- https://www.itu.int/rec/T-REC-G.729
- Technology standard.long_name
- Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP)
via Wikipedia infobox
~8 min read
Encyclopedic overview
10 sectionsContents
- G.729 annexes
- G.729 Annex A
- G.729 Annex B
- G.729 Annex J (G.729.1)
- Licensing
- Past patent litigation
- RTP payload type
- See also
- References
- External links
G.729 is a royalty-free narrow-band vocoder-based audio data compression algorithm using a frame length of . It is officially described as Coding of speech at 8 kbit/s using code-excited linear prediction speech coding (CS-ACELP), and was introduced in 1996. The wide-band extension of G.729 is called G.729.1, which equals G.729 Annex J.
Because of its low bandwidth requirements, G.729 is mostly used in voice over Internet Protocol (VoIP) applications when bandwidth must be conserved. Standard G.729 operates at a bit rate of , but extensions provide rates of (Annex D, F, H, I, C+) and (Annex E, G, H, I, C+) for worse and better speech quality, respectively.
Excerpted from Wikipedia’s “G.729” article, available under the CC BY-SA 4.0 licence.