Improving the transcoding capability of speech coders

Hong-Goo Kang, Hong Kook Kim, Richard V. Cox

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

With the trend of merging various communication networks, a need arises to provide transcoding between different speech coding formats. Presently this means cross tandeming the two coders in each case. This results in both quality loss and extra delay. A possible alternative is using a bitstream mapping approach that directly converts parameter values. For several standard coders having a similar coding structure, it should be possible to generate comparable or better quality without adding much delay or complexity. This paper proposes a bitstream mapping method between ITU-T Recommendation G.729 and TIA IS-641. Informal listening tests and the perceptual subjective quality measure (PSQM) scores show that the proposed method has better quality than the cross tandeming method, while it has at least 5 ms less delay and six times less computation.

Original languageEnglish
Pages (from-to)24-33
Number of pages10
JournalIEEE Transactions on Multimedia
Volume5
Issue number1
DOIs
Publication statusPublished - 2003 Mar 1

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Speech coding
Merging
Telecommunication networks

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Media Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Kang, Hong-Goo ; Kim, Hong Kook ; Cox, Richard V. / Improving the transcoding capability of speech coders. In: IEEE Transactions on Multimedia. 2003 ; Vol. 5, No. 1. pp. 24-33.
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Improving the transcoding capability of speech coders. / Kang, Hong-Goo; Kim, Hong Kook; Cox, Richard V.

In: IEEE Transactions on Multimedia, Vol. 5, No. 1, 01.03.2003, p. 24-33.

Research output: Contribution to journalArticle

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