Beyond "Basic Audio Quality": Characterizing the Perceptual Effects Introduced by Low Bit Rate Spatial Audio Codecs - Couverture souple

Marins, Paulo

 
9783843352260: Beyond "Basic Audio Quality": Characterizing the Perceptual Effects Introduced by Low Bit Rate Spatial Audio Codecs
Couverture souple
ISBN 10 : 3843352267 ISBN 13 : 9783843352260
Editeur : LAP LAMBERT Academic Publishing, 2010

Synopsis

The main aim of this work was to characterize the perceptual effects introduced by low bit rate spatial audio codecs. The existing methodologies used to assess the performance of spatial audio codecs were reviewed and it was found that spatial audio coding systems have been evaluated using one perceptual attribute ? basic audio quality (BAQ). This approach, although effective in terms of the assessment of the overall performance of codecs, does not quantify the contribution of typical codec distortions to the perceived BAQ of the codecs or allow for the identification of independent perceptual attributes that describe the artefacts introduced by spatial audio coding systems. A series of experiments was carried out aiming to characterize the perceptual effects introduced by low bit rate spatial audio codecs. It was found that impairments related to timbral features of the sound are the ones that affect the most the perceived basic audio quality of the codecs. Furthermore, four independent perceptual attributes were uncovered providing a description of the perceptual effects introduced by low bit rate spatial audio codecs.

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Présentation de l'éditeur

The main aim of this work was to characterize the perceptual effects introduced by low bit rate spatial audio codecs. The existing methodologies used to assess the performance of spatial audio codecs were reviewed and it was found that spatial audio coding systems have been evaluated using one perceptual attribute ? basic audio quality (BAQ). This approach, although effective in terms of the assessment of the overall performance of codecs, does not quantify the contribution of typical codec distortions to the perceived BAQ of the codecs or allow for the identification of independent perceptual attributes that describe the artefacts introduced by spatial audio coding systems. A series of experiments was carried out aiming to characterize the perceptual effects introduced by low bit rate spatial audio codecs. It was found that impairments related to timbral features of the sound are the ones that affect the most the perceived basic audio quality of the codecs. Furthermore, four independent perceptual attributes were uncovered providing a description of the perceptual effects introduced by low bit rate spatial audio codecs.

Biographie de l'auteur

Senior Lecturer in the Department of Music at Universidade de Brasília - Brazil. Dr. Marins holds a Ph.D from University of Surrey - UK, a Masters degree from Indiana University - USA and a Bachelor of Arts degree from Universidade de Brasília - Brazil. E-mail: marins@unb.br.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2010
Langue
anglais
ISBN 10 
3843352267
ISBN 13 
9783843352260
Reliure
Broché
Nombre de pages
276
Coordonnées du fabricant
non disponible
Personne responsable
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