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Audio interfaces and signal processing

Interfaces et traitements sonores

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Résumé

On traite dans cet article des problèmes liés aux interfaces de prise et à la restitution du son dans les télécommunications inter-personnelles et de groupe et aux traitements situés à ces interfaces. Ces problèmes qui se posent dans toute chaîne de communication par le son et la parole sont exposées brièvement dans I’introduction. Puis on aborde le domaine du débruitage et de l’annulation d’écho acoustique; un panorama des techniques actuelles est presenté. Le problème de la restitution du son respectant les caractéristiques de spatialisation acoustique est ensuite analysé et différentes solutions discutées à la lumieère des connaissances récentes en psycho-acoustique. La conclusion rappelle des données actuelles sur la normalisation et esquisse des pistes vers de futures applications.

Abstract

This paper deals with problems raised by speech and sound pick-up, processing and reproduction in telecommunication systems. Those problems which occur as soon as sound and speech are involved in a communication are briefly explained in the introduction. Then the noise and acoustic echo cancellation problems are discussed and current techniques are presented. The remaining part of the paper is dedicated to sound reproduction techniques which aim at preserving the spatial characteristics of sound and which take into account the characteristics of spatial hearing. Finally, some data about standardization are recalled and future applications are sketched.

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Bibliographie

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Authors and Affiliations

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

    Marc Emerit, Pascal Scalart & André Gilloire

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  1. Marc Emerit
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  2. Pascal Scalart
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  3. André Gilloire
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Emerit, M., Scalart, P. & Gilloire, A. Audio interfaces and signal processing. Ann. Télécommun. 55, 526–537 (2000). https://doi.org/10.1007/BF02995206

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