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Codage de la parole a bas et tres bas debits

Speech coding at low and very low bit rates

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Résumé

Cet article présente les principales techniques de codage de parole à bas et très bas debits, de 50 bit/s à 4 000 bit/s. Puis il présente en détail la méthode hsx pour le codage à 1200 bit/s et une nouvelle approche segmentale utilisant des unités acoustiques obtenues de manière non supervisée pour des débits inférieurs à 400 bit/s.

Abstract

This paper reviews the main algorithms for speech coding at low and very low bit rates, from 50 bps to 4 000 bps. Then the hsx technique for coding at 1200 bps and a new segmental method with automatically derived units for very low bit rate coding are presented in details.

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Authors and Affiliations

  1. Département Signaux et Télécommunications, ESIEE, BP 99 93162, Noisy Le, Grand cedex

    Geneviève Baudoin

  2. Institut de Radioelectronique, Université Technique de BRNO, BRNO, Republique Tcheque

    Jan Cernocky

  3. Thomson-csF Communications, 66 rue du fosse blanc, 92231, Gennevilliers cedex

    Philippe Gournay

  4. CNRS-URA-820, ENST-TSI, 46 rue Barrault, 75634, PARIS cedex 13

    Gérard Chollet

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  1. Geneviève Baudoin
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  2. Jan Cernocky
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  3. Philippe Gournay
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  4. Gérard Chollet
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Correspondence to Geneviève Baudoin, Jan Cernocky, Philippe Gournay or Gérard Chollet.

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Baudoin, G., Cernocky, J., Gournay, P. et al. Codage de la parole a bas et tres bas debits. Ann. Télécommun. 55, 462–482 (2000). https://doi.org/10.1007/BF02995202

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