Document Type
Article
Publication Date
3-2006
Abstract
Electronic speckle pattern interferometry has been used to study the deflection shapes of a piano soundboard. A design for an interferometer that can image such an unstable object is introduced, and interferograms of a piano soundboard obtained using this interferometer are presented. Deflection shapes are analyzed and compared to a finite element model, and it is shown that the force the strings exert on the soundboard is important in determining the mode shapes and resonant frequencies. Measurements of resonance frequencies and driving point impedance made using the interferometer are also presented.
Published In
Sarah A. Zietlow, and Thomas R. Moore. 2006. Interferometric studies of a piano soundboard. The Journal of the Acoustical Society of America 119 (3): 1783-93.
Publication Title
The Journal of the Acoustical Society of America
DOI
10.1121/1.2164989
Comments
Copyright (2006) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.
This article appeared in Moore, Thomas R. and Zietlow, Sarah A., The Journal of the Acoustical Society of America, 119, 1783-1793 (2006). This article may be found at http://scitation.aip.org/content/asa/journal/jasa/119/3/10.1121/1.2164989.