Impulse wave diffraction by rigid wedges and plates

Abstract

The impulse wave solution of point source radiation which is diffracted by an infinite rigid corner or wedge, [M. A. Biot and I. Tolstoy, J. Acoust. Soc. Am. 29, 381–391 (1957)], describes a closed form time‐domain solution to an old problem that is generally studied in the frequency domain. The theory is tested by an experiment using models of wedges and plates in an anechoic chamber, and the source regions of diffraction are identified and compared with theoretical predictions. In addition, numerical Fourier transformation of the dominant part of the solution provides the transmission loss as a function of frequency without further assumptions or approximations. [Work supported by the Office of Naval Research.]