The adaptive multirate wideband speech codec: system characteristics, quality advances, and deployment strategies

Author

Ojala, Pasi ; Lakaniemi, Ari ; Lepänaho, Henrik ; Jokimies, Matti

Author_Institution

Nokia Res. Center

Volume

44

Issue

5

fYear

2006

fDate

5/1/2006 12:00:00 AM

Firstpage

59

Lastpage

65

Abstract

Wideband speech is the major differentiation and attraction of third-generation network services in both the circuit and packet switched domain. Increased audio bandwidth introduces a significant leap in perceived quality of service compared to currently utilized narrowband telephony in second-generation mobile communications and the PSTN. The adaptive multirate wideband (AMR-WB) speech codec is the service enabler for improved user experience. It is an established 3GPP and ITU-T wideband speech codec standard and represents the state-of-the-art in speech quality as well as robustness in error prone radio channels. It is also the first codec algorithm standardized for wideband speech for mobile communications

Keywords

3G mobile communication; adaptive codes; adaptive signal processing; broadband networks; data compression; speech codecs; speech coding; wireless channels; QoS; adaptive multirate wideband speech codec; deployment strategies; mobile communications; quality of service; radio channels; third-generation network services; Bandwidth; Communication switching; Mobile communication; Narrowband; Packet switching; Quality of service; Speech codecs; Switching circuits; Telephony; Wideband;

fLanguage

English

Journal_Title

Communications Magazine, IEEE

Publisher

ieee

ISSN

0163-6804

Type

jour

DOI

10.1109/MCOM.2006.1637948

Filename

1637948