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Synthèse sur la réduction conjointe de bruit et d’écho pour lés systèmes mains-libres

An overview on noise and echo reduction in hands-free applications

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Résumé

Les télécommunications modernes s’éprennent de liberté et, dans ce paysage, les systèmes mains-libres proposent aux abounés de converser de manière plus naturelle, sans avoir à tenir un combiné. Ce nouvel usage entraîne des problèmes jusqu ’alors négligeables en téléphonie classique : la superposition de bruit et d’écho, souvent très énergétiques, sur le signal de parole. Afin de pallier ces problèmes et de fournir une qualité suffisante aux télécommunications, une réduction conjointe des perturbations, bruit et écho, est nécessaire. Cet article présente une synthèse des solutions retenues pour cette double réduction dans le cadre déééééééééé’une prise de son mono-capteur et bi-capteurs.

Abstract

In the context of modern telecommunications, hands-free systems allow to talk in a more natural way, without handling a telephone. This leads to new problems which were negligible in classical telephony: the superposition of energetic noise and echo on the speech signal. To solve these problems and to provide a sufficient speech quality, a joint reduction of these perturbations is needed. This paper presents a synthesis of solutions retained to achieve this reduction in the context of mono-channel and two-channel observations.

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Authors and Affiliations

  1. Centre National d’Études des Télécommunications, France Télécom R&D DIH/DIPS, Technopole Anticipa, 2 av. Pierre Marzin, 22307, Lannion Cedex, France

    Christophe Beaugeant & Pascal Scalart

  2. Laboratoire de Traitement du Signal et de l’lmage —, Université de Rennes 1, Bat. 22, Campus de Beaulieu, 35042, Rennes Cedex, France

    Régine Le Bouquin Jeannès & Gérard Faucon

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  1. Christophe Beaugeant
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  2. Régine Le Bouquin Jeannès
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  3. Pascal Scalart
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  4. Gérard Faucon
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Correspondence to Christophe Beaugeant or Régine Le Bouquin Jeannès.

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Beaugeant, C., Le Bouquin Jeannès, R., Scalart, P. et al. Synthèse sur la réduction conjointe de bruit et d’écho pour lés systèmes mains-libres. Ann. Télécommun. 55, 538–552 (2000). https://doi.org/10.1007/BF02995207

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