J. Stuart Bolton

TL;DR: A method for evaluating the acoustical properties of homogeneous and isotropic porous materials that may be modeled as fluids having complex properties is described here and good agreement was found between the estimated acoustICAL properties and those predicted by using the formulas of Delany and Bazley.

TL;DR: In this article, the authors developed a two-dimensional elastic-absorption finite element model of isotropic elastic porous noise control materials and investigated the effect of edge constraints on the surface normal impedance of a foam sample in a standing-wave tube.

TL;DR: In this article, the authors proposed a statistical optimized nearfield acoustical holography (SONAH) based on a formulation similar to that of NAH, where the measurement surface is extended beyond the source to a region where the sound pressure drops to a level significantly lower than the peak level within the measurement aperture.

TL;DR: In this paper, an elastic porous material (i.e., foam) and structural finite elements with either modal or finite element representations of the acoustical system are presented.

TL;DR: In this article, a cellular acoustical metamaterial consisting of a periodic arrangement of unit cells consisting of plates held in a grid-like frame is proposed to yield enhanced low frequency transmission loss.