Algorithms for converting 3D surface roughness spectra when calculating frequency-angle reverberation characteristics

Autor:	E. L. Borodina, M. B. Salin, B. M. Salin
Rok vydání:	2012
Předmět:	Physics Reverberation Acoustics and Ultrasonics Scattering business.industry Acoustics Bragg's law Surface finish Signal Spectral line Optics Computer Science::Sound Surface roughness business Electromagnetic reverberation chamber
Zdroj:	Acoustical Physics. 58:666-677
ISSN:	1562-6865 1063-7710
Popis:	On the basis of an earlier developed model of sound scattering by surface disturbances characterized by 3D roughness spectra, we propose and test a sufficiently fast algorithm for calculating the spectral power density of surface reverberation that takes into account the propagation conditions, distance, and beam pattern of the receiver system. For a distance of up to 1000 m, a water area depth of ∼20 m, and actually measured 3D roughness spectra in the Doppler frequency range of ±5 Hz, we have calculated the frequency-angle reverberation spectra for an acoustic background-radiation signal of 1.5 kHz. The obtained angle and frequency reverberation characteristics are compared with the results of acoustic measurements conducted using linear horizontal receiver antennas.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7b6d5ca1f0c38159b1c29269558d9e71 https://doi.org/10.1134/s1063771012060036 Zobrazit plný text záznamu Plný text ve formátu PDF