Dynamical properties of piano soundboards

Abstract : In pianos, the transfer of energy from strings to soundboard and the radiation of sound are highly dependent on the dynamical properties of the soundboard. In this paper, a numerical study is conducted for various rib configurations, showing that even slight irregularities in rib spacing can induce a strong localization of the soundboard velocity pattern. The effective vibrating area can be further reduced due to the spatial filtering effect of the bridge. Numerical predictions of modal shapes and operating deflection shapes are confirmed by series of measurements made on upright piano soundboards. Simulations of radiated pressure based on measured and calculated soundboard velocity fields show that localization tends to broaden the cone of directivity and to reduce the number of lobes.
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Article dans une revue
Journal of the Acoustical Society of America, Acoustical Society of America, 2013, 133 (4), pp.2456-2466. 〈10.1121/1.4794387〉
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Contributeur : Benjamin Cotté <>
Soumis le : mardi 31 mars 2015 - 17:27:42
Dernière modification le : mercredi 20 décembre 2017 - 11:36:01

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Antoine Chaigne, Benjamin Cotté, Roberto Viggiano. Dynamical properties of piano soundboards. Journal of the Acoustical Society of America, Acoustical Society of America, 2013, 133 (4), pp.2456-2466. 〈10.1121/1.4794387〉. 〈hal-01137948〉

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