Ircam-Centre Pompidou

Recherche

  • Recherche simple
  • Recherche avancée

    Panier électronique

    Votre panier ne contient aucune notice

    Connexion à la base

  • Identification
    (Identifiez-vous pour accéder aux fonctions de mise à jour. Utilisez votre login-password de courrier électronique)

    Entrepôt OAI-PMH

  • Soumettre une requête

    Consulter la notice détailléeConsulter la notice détaillée
    Version complète en ligneVersion complète en ligne
    Version complète en ligne accessible uniquement depuis l'IrcamVersion complète en ligne accessible uniquement depuis l'Ircam
    Ajouter la notice au panierAjouter la notice au panier
    Retirer la notice du panierRetirer la notice du panier

  • English version
    (full translation not yet available)
  • Liste complète des articles

  • Consultation des notices


    Vue détaillée Vue Refer Vue Labintel Vue BibTeX  

    %0 Journal Article
    %A Brochard, Renaud
    %A Drake, Carolyn
    %A Botte, Marie-Claire
    %A McAdams, Stephen
    %T Perceptual organization of complex auditory sequences : effect of number of simultaneous sub-sequences and frequency separation
    %D 1999
    %B Journal of Experimental Psychology: Human Perception and Performance
    %V 25
    %P 1742-1759
    %F Brochard99a
    %K auditory streams
    %K critical band
    %K attention
    %X How do listeners perceptually organize complex auditory sequences composed of two or more simultaneous sub -sequences? We demonstrate that previous results obtained with two-sub-sequence mixtures generalize to more comple x ones, and describe four new organizing principles. A new paradigm identified whether listeners perceive the mixt ure as a single unit (integrative listening) or segregate it into two (or more) perceptual units (stream segregati on). Listeners heard two complex sequences, each composed of 1, 2, 3, or 4 isochronous sub-sequences (each define d by a specific frequency/tempo combination). Their task was to say whether a small temporal irregularity created in one of the sub-sequences was situated in the first or second complex sequence. Attention was focused on one par ticular sub-sequence by preceding the complex sequences by a single sub-sequence. Two control experiments confirm ed that detection was similar in all sub-sequences and was not possible if listeners did not perceptually organize the complex sequences into streams. Then, Experiment 1 showed that the smallest frequency separation under which listeners were able to focus on one sub-sequence was unaffected by the number of co-occurring sub-sequences, sugge sting that the non-focused sounds were not perceptually organized into streams. Experiment 2 showed that temporal detection improved progressively (not abruptly as has been assumed previously) as the frequency separation between the sub-sequences was increased from .25 to 6 auditory filters. Finally, we propose a model of the perceptual org anization of complex auditory sequences.
    %1 1
    %2 3

    © Ircam - Centre Pompidou 2005.