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  • Research Article
  • Open Access

Advances in Modal Analysis Using a Robust and Multiscale Method

  • 1Email author,
  • 2,
  • 3,
  • 1 and
  • 4
EURASIP Journal on Advances in Signal Processing20102010:392782

  • Received: 1 March 2010
  • Accepted: 18 October 2010
  • Published:


This paper presents a new approach to modal synthesis for rendering sounds of virtual objects. We propose a generic method 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 permits the construction of plausible lower resolution approximations of the modal model. We can compute the audible impulse response of a variety of objects. Our solution is robust and can handle nonmanifold geometries that include both volumetric and surface parts. We present a system which allows us to manipulate and tune sounding objects in an appropriate way for games, training simulations, and other interactive virtual environments.


  • Impulse Response
  • Modal Analysis
  • Surface Model
  • Virtual Environment
  • Regular Grid

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Authors’ Affiliations

REVES/INRIA, BP 93, 06902 Sophia Antipolis, France
TELE Lab, Université catholique de Louvain (UCL), 1348 Louvain-la-Neuve, Belgium
EVASION/INRIA/LJK, Rhône-Alpes Grenoble, France
SOCS, McGill University, Montreal, Canada, H3A 2A7


© Cécile Picard et al. 2010

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.