Amélioration automatique de l'intelligibilité de la parole
Identifieur interne : 00A741 ( Main/Merge ); précédent : 00A740; suivant : 00A742Amélioration automatique de l'intelligibilité de la parole
Auteurs : Vincent Colotte [France] ; Yves Laprie [France]Source :
Descripteurs français
- mix :
Abstract
Le papier présente une méthode de transformation de la parole permettant de ralentir sélectivement le débit et de renforcer certains indices acoustiques significatifs. Cette transformation peut être utilisée non seulement comme aide aux malentendants mais aussi lors de l'apprentissage d'une seconde langue en facilitant la compréhension orale.Le ralentissement sélectif repose sur l'utilisation de la méthode de synthèse TD-PSOLA. Un algorithme de marquage automatique du pitch a été mis en oeuvre pour appliquer cette méthode de manière automatique. La stratégie de contrôle du débit exploite une fonction de variation spectrale qui localise les changements spectraux rapides.Le renforcement consiste simplement en une amplification des occlusives et des fricatives sourdes. Ces indices acoustiques sont détectés de manière automatique à partir d'un critère basé sur l'énergie.Cette approche a été évaluée dans un contexte d'apprentissage d'une seconde langue, plus précisément en évaluant l'amélioration en compréhension orale. Les expériences ont montré que la compréhension orale est améliorée. || This paper presents a speech signal transformation which slows down speech signals selectively and enhances some important acoustic cues. This transformation can be used not only for hearing aids but also for second language acquisi
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type="university">Université Nancy 2</orgName><orgName type="institution" wicri:auto="newGroup">Université de Lorraine</orgName><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region></placeName><orgName type="university">Institut national polytechnique de Lorraine</orgName><orgName type="institution" wicri:auto="newGroup">Université de Lorraine</orgName></affiliation></author></analytic></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="mix" xml:lang="fr"><term>amélioration</term><term>enhancement</term><term>improvement</term><term>intelligibility</term><term>intelligibilité</term><term>parole</term><term>ralentissement</term><term>renforcement</term><term>slowing down</term><term>speech</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="fr">Le papier présente une méthode de transformation de la parole permettant de ralentir sélectivement le débit et de renforcer certains indices acoustiques significatifs. Cette transformation peut être utilisée non seulement comme aide aux malentendants mais aussi lors de l'apprentissage d'une seconde langue en facilitant la compréhension orale.Le ralentissement sélectif repose sur l'utilisation de la méthode de synthèse TD-PSOLA. Un algorithme de marquage automatique du pitch a été mis en oeuvre pour appliquer cette méthode de manière automatique. La stratégie de contrôle du débit exploite une fonction de variation spectrale qui localise les changements spectraux rapides.Le renforcement consiste simplement en une amplification des occlusives et des fricatives sourdes. Ces indices acoustiques sont détectés de manière automatique à partir d'un critère basé sur l'énergie.Cette approche a été évaluée dans un contexte d'apprentissage d'une seconde langue, plus précisément en évaluant l'amélioration en compréhension orale. Les expériences ont montré que la compréhension orale est améliorée. || This paper presents a speech signal transformation which slows down speech signals selectively and enhances some important acoustic cues. This transformation can be used not only for hearing aids but also for second language acquisi</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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