G.722
Sign in to saveG.722 is an ITU-T standard 7 kHz wideband audio codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM (SB-ADPCM). The corresponding narrow-band codec based on the same technology is G.726.
Key facts
- Technology standard.title
- G.722
- Technology standard.long_name
- 7 kHz audio-coding within 64 kbit/s
- Technology standard.image
- Pcm.svg
- Technology standard.status
- In force
- Technology standard.year_started
- 1988
- Technology standard.version
- (09/12)
- Technology standard.version_date
- September 2012
- Technology standard.organization
- ITU-T
- Technology standard.base_standards
- G.711
- Technology standard.related_standards
- G.722.1, G.722.2, G.726
- Technology standard.domain
- audio compression
- Technology standard.license
- Freely available
- Technology standard.website
- https://www.itu.int/rec/T-REC-G.722
via Wikipedia infobox
Article
6 sectionsContents
- Applications
- RTP encapsulation
- Licensing
- See also
- References
- External links
G.722 is an ITU-T standard 7 kHz wideband audio codec operating at 48, 56 and 64 kbit/s. It was approved by ITU-T in November 1988. Technology of the codec is based on sub-band ADPCM (SB-ADPCM). The corresponding narrow-band codec based on the same technology is G.726.
G.722 provides improved speech quality due to a wider speech bandwidth of 50–7000 Hz compared to narrowband speech coders like G.711 which in general are optimized for POTS wireline quality of 300–3400 Hz. G.722 sample audio data at a rate of 16 kHz (using 14 bits), double that of traditional telephony interfaces, which results in superior audio quality and clarity.