Propagation of sound over grassland and over an earth barrier

[1]  U. Ingard.  On the Reflection of a Spherical Sound Wave from an Infinite Plane , 1951 .

[2]  W. E. Scholes,et al.  The horizontal propagation of sound from a jet engine close to the ground, at Hatfield , 1964 .

[3]  T. Senior,et al.  Electromagnetic and Acoustic Scattering by Simple Shapes , 1969 .

[4]  P. E. Doak,et al.  Measurements of the normal acoustic impedance of ground surfaces , 1970 .

[5]  E. N. Bazley,et al.  Acoustical properties of fibrous absorbent materials , 1970 .

[6]  E. N. Bazley,et al.  A note on the effect of ground absorption in the measurement of aircraft noise , 1971 .

[7]  H. Jonasson.  Diffraction by wedges of finite acoustic impedance with applications to depressed roads , 1972 .

[8]  D. Aylor.  NOISE REDUCTION BY VEGETATION AND GROUND , 1972 .

[9]  H. G. Jonasson,et al.  Sound reduction by barriers on the ground , 1972 .

[10]  A. Pierce.  Diffraction of sound around corners and over wide barriers , 1974 .

[11]  L C Sutherland.  REVIEW OF EXPERIMENTAL DATA IN SUPPORT OF A PROPOSED NEW METHOD FOR COMPUTING ATMOSPHERIC ABSORPTION LOSSES , 1975 .

[12]  Sven‐Ingvar Thomasson.  Reflection of waves from a point source by an impedance boundary , 1976 .

[13]  J. E. Piercy,et al.  Outdoor sound propagation over ground of finite impedance , 1976 .

[14]  C. Chessell.  Propagation of noise along a finite impedance boundary , 1977 .

[15]  Sven‐Ingvar Thomasson.  Sound propagation above a layer with a large refraction index , 1977 .

[16]  W. J. Hadden,et al.  Plane wave diffraction by a wedge with finite impedance , 1978 .