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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