Abstract
This study analyzed the acoustic fields generated by interactions between acoustic waves and the edge of a half plane and a right angle wedge. Using known solutions of the diffraction of a monochromatic wave on a half-plane and a right angle wedge, they were written in a form permitting simultaneous analysis of three wave types: plane, cylindrical and spherical. Approximate forms of solutions were adopted and the ranges of their applicability analyzed. In the space around the chosen obstacle, its efficiency was calculated with respect to a free Geld, for wavelengths and distances of interest in urban acoustics.References
[1] J. J. BOWMAN, T. B. A. SENIOR, P. L. E. USLENGHI [editors], Electromagnetic and acoustic scattering by simple shapes, North-Holland Publishing Company, Amsterdam 1969, ch. 6.
[2] Ref. [1], ch. 8.
[3] J. B. KELLER, Diffraction by an aperture, J. Appl. Phys., 28, 4, 426 444 (1956).
[4] J. B. KELLER, Geometrical theory of diffraction, J. A. S. A. 52, 2, 116-130 (1962).
[5] E. WALERIAN, R. JANCZUR, Diffraction theories in description of the efficiency of acoustic sciences [in Polish], IFTR Reports 25 (1985).
[2] Ref. [1], ch. 8.
[3] J. B. KELLER, Diffraction by an aperture, J. Appl. Phys., 28, 4, 426 444 (1956).
[4] J. B. KELLER, Geometrical theory of diffraction, J. A. S. A. 52, 2, 116-130 (1962).
[5] E. WALERIAN, R. JANCZUR, Diffraction theories in description of the efficiency of acoustic sciences [in Polish], IFTR Reports 25 (1985).
