Improved packet loss concealment for PCM VoIP

Authors

  • Q. Li Sch. of Info. Technol. and Eng., University of Ottawa, 800 King Edward, Ottawa, Ont. K1N 6N5
  • M. Elsabrouty Sch. of Info. Technol. and Eng., University of Ottawa, 800 King Edward, Ottawa, Ont. K1N 6N5
  • M. Bouchard Sch. of Info. Technol. and Eng., University of Ottawa, 800 King Edward, Ottawa, Ont. K1N 6N5

Keywords:

Algorithms, Approximation theory, Computational complexity, Internet, Network protocols, Parameter estimation, Pulse code modulation, Signal filtering and prediction, Signal receivers, Telecommunication systems, Packet loss, Perceptual Estimation of Speech Quality (PESQ), Public switched telephone networks (PSTN), Voice-over IP (VoIP)

Abstract

A high-performance concealment algorithm for pulse code modulation (PCM) coded speech was presented. The new concealment technique uses a linear prediction with a large order filter to model the speech. A threshold, based on the fact that voiced speech tends to be more energetic in the residual signal, was determined. It was found by the PESQ-MOS scores that the proposed algorithm exhibits a superior high-quality concealment performance in all cases.

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Published

2004-09-01

How to Cite

1.
Li Q, Elsabrouty M, Bouchard M. Improved packet loss concealment for PCM VoIP. Canadian Acoustics [Internet]. 2004 Sep. 1 [cited 2021 Oct. 20];32(3):140-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1667

Issue

Section

Proceedings of the Acoustics Week in Canada