Perceptual codec and interaction aware playout algorithms and quality measurement for VoIP systems

Kuo Kun Tseng*, Yuan Cheng Lai, Ying-Dar Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

To reduce the effect of network jitter, the playout algorithm for voice streams should correctly adjust the playout delay. Conventional playout algorithms were based on network delay only; they did not consider the perceptual quality, and were not aware the codec and interactive mode. Therefore, we present two novel approaches: codec aware adaptive playout (CAAP) algorithm and interactive aware adaptive playout (IAAP) algorithm, which intent to optimize the voice quality based on codec and interactive mode respectively. The performance of CAAP and IAAP are superior to the prior algorithms in our substantial evaluation. Since no objective mechanisms for measuring the speech quality of two-way communication exist, we also propose a new quality measurement for it.

Original languageEnglish
Pages (from-to)297-305
Number of pages9
JournalIEEE Transactions on Consumer Electronics
Volume50
Issue number1
DOIs
StatePublished - 1 Feb 2004

Keywords

  • Network jitter
  • Perceptual quality
  • Real time streams
  • Speech quality measurement
  • VoIP

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