Vibroacoustic characterization of string instruments - Application for lutherie assistance
type: Dataset
contact point: Organization
  fn: CCSD
keyword: guitars
keyword: identification-modale
keyword: spiacouengineering-sciences-physicsacoustics-physicsclass-ph
keyword: violons
keyword: modal-identification
keyword: theses
keyword: guitares
keyword: infoeu-reposemanticsdoctoralthesis
keyword: musical-acoustics
keyword: physmecaacouphysics-physicsmechanics-physicsacoustics-physicsclass-ph
keyword: acoustique-musicale
keyword: violins
keyword: lutherie-assistance
keyword: aide-a-la-lutherie
landing page: https://theses.hal.science/tel-00833885
description: The assessment of musical instruments may be performed using vibroacoustical parameters, enabling to quantify objectively differences between instruments. The choice of relevant quantities evaluating the mechanical and the acoustical behavior of stringed instruments is the main aim of this thesis. The present study focuses on guitars and violins: it belongs to the PAFI project (Plateforme d'Aide à la Facture Instrumentale), which aims at developing a set of tools dedicated to instrument makers, providing an assistance for luthiers in a daily practice context. For that purpose, a method enabling the estimation of mechanical properties of dynamic structures, whether musical or not, is developed. It is based on the estimation of the modal density in the mid-frequency range, by means of a subspace method, called ESPRIT (Estimation of Signal Parameters via Rotational Invariance Techniques). It is also based on the mean-value theory by Skudrzyk. This method estimates the characteristic parameters of any plate-like or curved panel structures. The modal identification is proved to be robust as long as the modal overlap factor does not exceed 100 %. Applications on experimental and simulated data show that the method is able to discriminate panels by means of the values of their mass density and their Young's modulus. The method requires solely a few measurement points and the required experimental device is affordable and easily manipulable by the luthier in its workshop. Applications of the method on guitars show that its mechanical behavior in the mid-frequency range is similar to that of a flat panel. The instrument is then characterized by a few features or macroparameters corresponding to the characteristic parameters of the equivalent plate: the equivalent mass, the equivalent bending stiffness, and the mean-value of mobility. These features discriminate two population of guitars: high-quality handcrafted guitars and lower-quality guitars. A detailed study about bridg…
issued: 2026-05-10T17:43:35.848137
language: fr
modified: 2026-05-10T17:43:35.848142

test_moissonnage_selune
type: Agent

Vibroacoustic characterization of string instruments - Application for lutherie assistance
type: Distribution
access URL: https://theses.hal.science/tel-00833885
format: HTML
issued: 2026-05-10T17:43:35.869287
modified: 2026-05-10T17:43:35.827474