[Comparaison objective et perceptive de la reproduction du timbre par des enceintes]
Pour comparer la reproduction du timbre par différentes enceintes acoustiques, il est possible d'utiliser des mesures normalisées ou des tests d'écoute. Ce travail propose un protocole qui relie les approches objectives et perceptives : des extraits musicaux sont reproduits par les enceintes dans une pièce usuelle, et enregistrés à la position d'écoute. Un modèle auditif simulant le masquage permet de calculer des dissemblances entre les signaux enregistrés. Ceci conduit à une très bonne corrélation avec les résultats de tests d'écoute utilisant les mêmes enregistrements, et les principales influences perçues se retrouvent lors de l'analyse des matrices de dissemblances ainsi obtenues.
Differentiating the restitution of timbre by several loudspeakers may result from standard measurements, or from listening tests. This work proposes a protocol keeping a close relationship between the objective and perceptual evaluations: the stimuli are musical excerpts, and the measuring environment is a standard listening room. The protocol involves recordings made at a listener position, and objective dissimilarities are computed using an auditory model simulating masking effects. The resulting data correlate very well with listening tests using the same recordings, and show similar dependencies on the major parameters identified from the dissimilarity matrices.
Accepté le :
Publié le :
Mot clés : Acoustique, Enceinte, Mesure
@article{CRMECA_2006__334_12_732_0,
author = {Mathieu Lavandier and Philippe Herzog and Sabine Meunier},
title = {Physical and perceptual estimation of differences between loudspeakers},
journal = {Comptes Rendus. M\'ecanique},
pages = {732--736},
publisher = {Elsevier},
volume = {334},
number = {12},
year = {2006},
doi = {10.1016/j.crme.2006.10.004},
language = {en},
}
TY - JOUR AU - Mathieu Lavandier AU - Philippe Herzog AU - Sabine Meunier TI - Physical and perceptual estimation of differences between loudspeakers JO - Comptes Rendus. Mécanique PY - 2006 SP - 732 EP - 736 VL - 334 IS - 12 PB - Elsevier DO - 10.1016/j.crme.2006.10.004 LA - en ID - CRMECA_2006__334_12_732_0 ER -
Mathieu Lavandier; Philippe Herzog; Sabine Meunier. Physical and perceptual estimation of differences between loudspeakers. Comptes Rendus. Mécanique, Volume 334 (2006) no. 12, pp. 732-736. doi : 10.1016/j.crme.2006.10.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2006.10.004/
[1] IEC Publication 60268-13, Sound system equipment – Part 13: Listening tests on loudspeakers, International Electrotechnical Commission, Geneva, Switzerland, 1998
[2] M. Lavandier, B. Guyot, S. Meunier, P. Herzog, The influence of stereophony on the restitution of timbre by loudspeakers, AES 119th Convention, paper 6619, New York, 2005
[3] M. Lavandier, P. Herzog, S. Meunier, The restitution of timbre by loudspeakers in a listening room: perceptual and physical measurements, AES 117th Convention, paper 6240, San Francisco, 2004
[4] British Standard ISO 226: 2003, Acoustics – normal equal-loudness level contours, BSi (2003)
[5] Psychoacoustics: Facts and Models, Springer-Verlag, Berlin/New York, 1999
[6] M. Lavandier, S. Meunier, P. Herzog, Perceptual and physical evaluation of differences among a large panel of loudspeakers, Forum Acusticum 2005, Budapest, 2005, in press
[7] Modern Multidimensional Scaling. Theory and Applications, Springer-Verlag, Berlin/New York, 1997
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