Communication Dans Un Congrès Année : 2025

Lumped model of artificial lips used in an artificial trumpet player system

Résumé

Developing accurate models of the musican - instrument dynamical system requires not only to accurately model the resonator but also the musician components involved in sound production. In brass instruments the musician can be considered, in its simplest form, as a set of lips that forms the excitation mechanism coupled to the resonator. Different lumped models of the lips have been proposed in the literature to represent the dynamics of this lip-reed valve. Although a simple one degree-of-freedom linear model is able to produce realistic sounds and behaviors, additional localized nonlinearities and degrees of freedom have been proposed in the literature in order to implement more advanced lip models. However, these improvements often come at the cost of uncertainties on the physical phenomena to be modelled and on the added parameters to be tuned. We present a study where the objective is to propose a lumped model of the lips inspired from the functioning of artificial lips developed in our laboratory to artificially play the trumpet. After presenting the experimental system and the artificial lips, we will detail the study where a finite element model of the lips is fitted on optical measurements performed on the experimental bench. Through a model-reduction approach, a one-degree of freedom model of the lips with a cubic stiffness is derived from a von Karman plate model, along with analytical formulations for the elastic parameters. The next goal is to use this model for sound simulations or other types of numerical explorations of trumpet resonators.

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Dates et versions

hal-05365441 , version 1 (14-11-2025)

Identifiants

  • HAL Id : hal-05365441 , version 1

Citer

Vincent Freour, Bruno Cochelin, Keita Arimoto, Kazuhiro Fujita, Vincent Long, et al.. Lumped model of artificial lips used in an artificial trumpet player system. CFA 2025 - 17e Congrès Français d'Acoustique, Société Française d'Acoustique (SFA), Apr 2025, Paris, France. ⟨hal-05365441⟩
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