Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux

Type de document

COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)

Langue

anglais

Auteur

SUSINI ; HOUIX ; SAINT PIERRE

Résumé / Abstract

Effect of loudness on the perceptual structure underlying a corpus of sounds is investigated bytwo experimental methods: pairwise comparisons and sorting. Both methods are applied to a corpus of recordingssounds presented with their ecological, non normalized loudness, and to the same corpus equalized in loudness. Twotypes of perceptual structures (multidimensional scaling and hierarchical cluster analysis) are derived. Domination ofone auditory attribute ? loudness ? on less salient ones is discussed according to the two types of perceptualstructures. In the non-loudness-normalized corpus, loudness was the main factor explaining participant?s judgmentsfor both tasks. In particular, representations derived from sorting data almost solely reflected sound pressure leveldifference between sounds. On the opposite, loudness normalization allowed the emergence of several predictedauditory attributes that characterize the tested sounds. On that second corpus however, sorting data was found lessappropriate than pairwise data to provide interpretable continuous dimensions.