No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
A note on the effects of roughness on acoustic propagation past curved rough surfaces
1.A. Berry and G. A. Daigle, “Controlled experiments on the diffraction of sound by a curved surface,” J. Acoust. Soc. Am. 83, 2047–2058 (1988).
2.H. Medwin and G. D’Spain, “Near-grazing, low frequency propagation over randomly rough rigid surfaces,” J. Acoust. Soc. Am. 79, 657–665 (1986).
4.K. Attenborough and S. Taherzadeh, “Propagation from a point source over a rough finite impedance boundary,” J. Acoust. Soc. Am. 98, 1717–1722 (1995).
5.J. P. Chambers, R. Raspet, J. M. Sabatier, and Y. H. Berthelot, “Incorporating the effects of roughness in outdoor sound propagation models,” Proceedings of the 1996 National Conference on Noise Control Engineering, pp. 905–910 (1996).
6.Y. H. Berthelot and J. P. Chambers, “On the analogy between sound propagation over a rough surface and sound propagation over a smooth surface with modified surface impedance,” Proceedings of the Sixth Long Range Sound Propagation Symposia (1996).
7.J. P. Chambers and Y. H. Berthelot, “An experimental investigation of the propagation of sound over a curved, rough, rigid surface,” J. Acoust. Soc. Am. 102, 707–714 (1997).
8.P. Boulanger, K. Attenborough, and Q. Qin, “Effective impedance of surfaces with porous roughness: Models and data,” J. Acoust. Soc. Am. 117, 1146–1156 (2005).
9.P. Boulanger, K. Attenborough, Q. Qin, and C. M. Linton, “Reflection of sound from random distributions of semi-cylinders on a hard plane: Models and data,” J. Phys. D 38, 3480–3490 (2005).
10.J. P. Chambers and Y. H. Berthelot, “Utilizing a modified impedance analogy on sound propagation past a hard curved rough surface,” J. Acoust. Soc. Am. 120, 1186–1189 (2006).
11.A. W. Whelan, “Examination on the diffraction and scattering of sound by curved, rough surfaces and experimental analysis into propagation around a spherical berm,” MS thesis, University of Mississippi, University, MS (2007).
12.A. W. Whelan and J. P. Chambers “An investigation of the effects of roughness on acoustic propagation past curved surfaces,” Proceedings of the 12th International Long Range Sound Propagation Symposia (2008).
Article metrics loading...
Previous work on sound propagation past curved rough rigid surfaces demonstrated substantial changes in the insertion loss in the shadow zone due to the roughness ranging from to −20 dB from their smooth counterparts. These previous data also lead to new propagation modeling efforts to incorporate the effects of roughness via an impedance model but the data and modeling efforts were limited to a narrow range of roughness and hill sizes. The current effort was designed to expand the range of roughness and hill sizes in order to explore the range of influence of the roughness. The work presented here confirms the effects of surface roughness as observed in previous work and indicates where the effects of roughness begin to emerge as well as where they transition between decreasing the insertion loss to increasing the insertion loss.
Full text loading...
Most read this month