AMR-WB (Adaptive Multi-Rate Wideband), using technology developed jointly by VoiceAge and Nokia, is the first codec to be adopted as a standard for both wireless and wireline services. Standardized first by ETSI/3GPP in December 2001, it was then approved by the ITU-T in January 2002 as G.722.2.
Supporting a wide range of bit rates from 6.6-23.85 kbps, AMR-WB/G.722.2 is the mandatory standard codec for wideband speech in GSM and WCDMA networks It was adopted at ITU for teleconferencing and voice-over-packet applications and is also included in the CableLabs® PacketCable™ 2.0 specification.
For implementations of this codec on
other platforms, please contact sales@voiceage.com
AMR-WB/G.722.2 interoperates with the latest 3GPP2 wideband standard, VMR-WB, a source-controlled version of AMR-WB that is the mandatory speech codec for cdma2000® wideband telephony services.
AMR-WB supports dynamic adaptation to network conditions, using lower bit rates during network congestion or degradation while preserving audio quality.
