Authors

Antoine Falaize, David Roze

Abstract

In musical acoustics, the production of sound is usually described by the nonlinear interaction of the musician with a resonator (the instrument). For example a string (resonator) can be bowed or hit by a piano hammer (nonlinear interactions). The aim of this paper is to provide a stable (passive-guaranteed) simulation of such interaction systems. Our approach consists in first defining a generic passive-guaranteed structure for the interaction (finite dimensional) and for the resonator (infinite dimensional) and second constructing a generic procedure for the discretization of the resonator. This is achieved in the Port-Hamiltonian systems framework that decomposes a physical model into a network of energy-storing components, dissipative components and inputs-outputs, thus guaranteeing the passivity of the proposed models. Finally, a well established structure preserving time discretization method is used to provide numerical models which prove to fulfill a discrete power balance, hence the numerical stability. This generic procedure is applied to the sound synthesis of a bowed string and of a string hit by a piano hammer.

Keywords

Port Hamiltonian system; Order reduction; Friction; Collision

Citation

  • Journal: Nonlinear Dynamics
  • Year: 2025
  • Volume: 113
  • Issue: 4
  • Pages: 3249–3275
  • Publisher: Springer Science and Business Media LLC
  • DOI: 10.1007/s11071-024-10438-9

BibTeX

@article{Falaize_2024,
  title={{Generic passive-guaranteed nonlinear interaction model and structure-preserving spatial discretization procedure with applications in musical acoustics}},
  volume={113},
  ISSN={1573-269X},
  DOI={10.1007/s11071-024-10438-9},
  number={4},
  journal={Nonlinear Dynamics},
  publisher={Springer Science and Business Media LLC},
  author={Falaize, Antoine and Roze, David},
  year={2024},
  pages={3249--3275}
}

Download the bib file

References