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arXiv · 1311.5924

Objets Sonores: Une Représentation Bio-Inspirée Hiérarchique Parcimonieuse À Très Grandes Dimensions Utilisable En Reconnaissance; Auditory Objects: Bio-Inspired Hierarchical Sparse High Dimensional Representation for Recognition

Simon Brodeur·Jean Rouat
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Abstract

L'accent est placé dans cet article sur la structure hiérarchique, l'aspect parcimonieux de la représentation de l'information sonore, la très grande dimension des caractéristiques ainsi que sur l'indépendance des caractéristiques permettant de définir les composantes des objets sonores. Les notions d'objet sonore et de représentation neuronale sont d'abord introduites, puis illustrées avec une application en analyse de signaux sonores variés: parole, musique et environnements naturels extérieurs. Finalement, un nouveau système de reconnaissance automatique de parole est proposé. Celui-ci est comparé à un système statistique conventionnel. Il montre très clairement que l'analyse par objets sonores introduit une grande polyvalence et robustesse en reconnaissance de parole. Cette intégration des connaissances en neurosciences et traitement des signaux acoustiques ouvre de nouvelles perspectives dans le domaine de la reconnaissance de signaux acoustiques. The emphasis is put on the hierarchical structure, independence and sparseness aspects of auditory signal representations in high-dimensional spaces, so as to define the components of auditory objects. The concept of an auditory object and its neural representation is introduced. An illustrative application then follows, consisting in the analysis of various auditory signals: speech, music and natural outdoor environments. A new automatic speech recognition (ASR) system is then proposed and compared to a conventional statistical system. The proposed system clearly shows that an object-based analysis introduces a great flexibility and robustness for the task of speech recognition. The integration of knowledge from neuroscience and acoustic signal processing brings new ways of thinking to the field of classification of acoustic signals.

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Simon Brodeur, Jean Rouat. 2013-11-22. Objets Sonores: Une Représentation Bio-Inspirée Hiérarchique Parcimonieuse À Très Grandes Dimensions Utilisable En Reconnaissance; Auditory Objects: Bio-Inspired Hierarchical Sparse High Dimensional Representation for Recognition. https://arxiv.org/abs/1311.5924

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