Improved packet loss concealment for PCM VoIP

Auteurs-es

  • 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

Mots-clés :

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)

Résumé

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.

Fichiers supplémentaires

Publié-e

2004-09-01

Comment citer

1.
Li Q, Elsabrouty M, Bouchard M. Improved packet loss concealment for PCM VoIP. Canadian Acoustics [Internet]. 1 sept. 2004 [cité 5 mai 2026];32(3):140-1. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1667

Numéro

Vol. 32 No. 3 (2004)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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