Measurement of the absorption coefﬁcient of sound absorbing materials under a synthesized diffuse acoustic ﬁeldJournal of the Acoustical Society of America (2014)
AbstractThis 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 DateSummer June 16, 2014
Citation InformationOlivier 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/