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Article
Measurement of the absorption coefficient of sound absorbing materials under a synthesized diffuse acoustic field
Journal of the Acoustical Society of America (2014)
  • Olivier Robin
  • Alain Berry
  • Olivier Doutres, Ph.D.
  • Noureddine Atalla
Abstract
This letter proposes an experimental method to estimate the absorption coefficient of sound absorbing materials under a synthesized diffuse acoustic field in free-field conditions. Comparisons are made between experiments conducted with this approach, the standard reverberant room method, and numerical simulations using the transfer matrix method. With a simple experimental setup and smaller samples than those required by standards, the results obtained with the proposed approach do not exhibit non-physical trends of the reverberant room method and provide absorption coefficients in good agreement with those obtained by simulations for a laterally infinite material.
Publication Date
Summer June 16, 2014
Citation Information
Olivier Robin, Alain Berry, Olivier Doutres and Noureddine Atalla. "Measurement of the absorption coefficient of sound absorbing materials under a synthesized diffuse acoustic field" Journal of the Acoustical Society of America Vol. 136 Iss. 1 (2014)
Available at: http://works.bepress.com/olivier_doutres/45/