A packet loss recovery of G.729 speech under severe packet loss condition

Takeshi Nagano, Akinori Ito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In a VoIP application, packet losses degrade speech quality. Especially, IP network under a large-scale disaster should cause severe packet losses. We investigate influence of parameter loss to speech quality using G.729. And we investigated an effect of packet loss concealment method using redundant G.729 parameters. As compared with "repetition" method, the proposed method could improve speech quality. We also propose a bitrate reduction method by sending bit flip position instead of codebook index.

Original languageEnglish
Title of host publication2012 Conference Handbook - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2012
Publication statusPublished - 2012 Dec 1
Event2012 4th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2012 - Hollywood, CA, United States
Duration: 2012 Dec 32012 Dec 6

Publication series

Name2012 Conference Handbook - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2012

Other

Other2012 4th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2012
CountryUnited States
CityHollywood, CA
Period12/12/312/12/6

ASJC Scopus subject areas

  • Information Systems

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  • Cite this

    Nagano, T., & Ito, A. (2012). A packet loss recovery of G.729 speech under severe packet loss condition. In 2012 Conference Handbook - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2012 [6411785] (2012 Conference Handbook - Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2012).