Topological Sound Propagation with Reverberation Graphs

Abstract : Reverberation graphs is a novel approach to estimate global soundpressure decay and auralize corresponding reverberation effects in interactive virtual environments. We use a 3D model to represent the geometry of the environment explicitly, and we subdivide it into a series of coupled spaces connected by portals. Off-line geometrical-acoustics techniques are used to precompute transport operators, which encode pressure decay characteristics within each space and between coupling interfaces. At run-time, during an interactive simulation, we traverse the adjacency graph corresponding to the spatial subdivision of the environment. We combine transport operators along different sound propagation routes to estimate the pressure decay envelopes from sources to the listener. Our approach compares well with off-line geometrical techniques, but computes reverberation decay envelopes at interactive rates, ranging from 12 to 100 Hz. We propose a scalable artificial reverberator that uses these decay envelopes to auralize reverberation effects, including room coupling. Our complete system can render as many as 30 simultaneous sources in large dynamic virtual environments.
Type de document :
Article dans une revue
Acta Acustica united with Acustica, Hirzel Verlag, 2008, 94 (6), pp.921-932. 〈10.3813/AAA.918109〉
Liste complète des métadonnées

Littérature citée [18 références]  Voir  Masquer  Télécharger
Contributeur : Team Reves <>
Soumis le : lundi 18 juillet 2011 - 13:36:15
Dernière modification le : jeudi 11 janvier 2018 - 16:57:47
Document(s) archivé(s) le : mercredi 19 octobre 2011 - 02:20:28


Fichiers produits par l'(les) auteur(s)




Efstathios Stavrakis, Nicolas Tsingos, Paul Calamia. Topological Sound Propagation with Reverberation Graphs. Acta Acustica united with Acustica, Hirzel Verlag, 2008, 94 (6), pp.921-932. 〈10.3813/AAA.918109〉. 〈inria-00606808〉



Consultations de la notice


Téléchargements de fichiers