A Robust and Multi-Scale Modal Analysis For Sound Synthesis

Cécile Picard 1, 2, * François Faure 2 George Drettakis 1 Paul Kry 3
* Auteur correspondant
1 REVES - Rendering and virtual environments with sound
CRISAM - Inria Sophia Antipolis - Méditerranée
2 EVASION - Virtual environments for animation and image synthesis of natural objects
Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble
Abstract : This paper presents a new approach to modal synthesis for rendering sounds of virtual objects. We propose a generic method for modal analysis that preserves sound variety across the surface of an object, at different scales of resolution and for a variety of complex geometries. The technique performs automatic voxelization of a surface model and automatic tuning of the parameters of hexahedral finite elements, based on the distribution of material in each cell. The voxelization is performed using a sparse regular grid embedding of the object, which easily permits the construction of plausible lower resolution approximations of the modal model. With our approach, we can compute the audible impulse response of a variety of objects. Our solution is robust and can handle non-manifold geometries that include both volumetric and surface parts, such as those used in games, training simulations, and other interactive virtual environment.
Type de document :
Communication dans un congrès
DAFx-09 - 12th International Conference on Digital Audio Effects, Sep 2009, Como, Italy. pp.1-7, 2009, Proc. of the 12th Int. Conference on Digital Audio Effects (DAFx-09)
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Cécile Picard, François Faure, George Drettakis, Paul Kry. A Robust and Multi-Scale Modal Analysis For Sound Synthesis. DAFx-09 - 12th International Conference on Digital Audio Effects, Sep 2009, Como, Italy. pp.1-7, 2009, Proc. of the 12th Int. Conference on Digital Audio Effects (DAFx-09). 〈inria-00410314〉

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