Rôle de la ségrégation séquentielle pour la séparation de voix concurrentes

Abstract : Only very few studies about auditory stream segregation have used speech, and it is then difficult to evaluate how this mechanism is involved in concurrent speech perception. It is also difficult to identify the cues that are relevant for the separation of speech because these cues have been mainly studied isolated in some very simple signal. The matter of this thesis is to study the perceptual cues that are involved in the sequential segregation of vowels with alternating pitch. The performed investigations show that the spectral cues do play a role in this phenomenon. Constrastively, the periodicity of the temporal envelope does not seem to be a consistent pitch cue for speech. Finally, it appears that the ability of the subjects to perceive these two kind of cues does not explain all the observed variations in the performances of the subjects in the vowel sequential segregation task.
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Submitted on : Monday, May 19, 2008 - 1:38:36 PM
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Etienne Gaudrain. Rôle de la ségrégation séquentielle pour la séparation de voix concurrentes. Acoustique [physics.class-ph]. Université Claude Bernard - Lyon I, 2008. Français. ⟨tel-00280604⟩

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