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A Scalable Three Bit-rates 8–14.1-24 kbit/s Audio Coder

Codeur Audio Hiérarchique (8–14,1 — 24 kbit/s)

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Abstract

This paper presents a scalable three bit- rates (8, 14.1 and 24 kbit/s) coder. For the two embedded lowest ones, operating in the telephone bandwidth, celp coding techniques are used. For the highest rate, that both improves narrowband quality and extends the band to [50-7000Hz], transform coding techniques are used. The main applications deal with transmission over network with no guaranteed QoS.

Résumé

Cet article présente un codeur hiérarchique à trois débits (8, 14,1 et 24 kbit/s). Pour les deux plus bas débits imbriqués, fonctionnant en bande téléphonique, des techniques celp sont utilisées. Le plus haut débit, qui améliore la qualité en bande téléphonique tout en étendant la bande passante à la gamme [50, 7 000 Hz], utilise un codage par transformée. Les principales applications de ce codeur se situent dans le domaine de la transmission sur réseau à qualité de service non garantie.

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Authors and Affiliations

  1. France Telecom R&D dih/dips, 2, Avenue Pierre Marzin, 22307, Lannion Cedex, France

    Hervé Taddei, Dominique Massaloux & Alain Le Guyader

Authors
  1. Hervé Taddei
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  2. Dominique Massaloux
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  3. Alain Le Guyader
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Taddei, H., Massaloux, D. & Le Guyader, A. A Scalable Three Bit-rates 8–14.1-24 kbit/s Audio Coder. Ann. Télécommun. 55, 483–492 (2000). https://doi.org/10.1007/BF02995203

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  • DOI: https://doi.org/10.1007/BF02995203

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