Cross-Spectral Density of the Random Pressure Field on a Recessed Plane Baffle
Analytical results have been obtained for the cross-spectral density of the noise pressure on a recessed infinite plane baffle when the random pressure fluctuations incident on an upper boundary have spatial scales which are small in comparison with an acoustic wavelength. The analysis
shows that if the depth of the baffle is small in comparison with an acoustic wavelength, and large in comparison with the correlation scales of the pressure incident on the upper boundary, the random pressure on the baffle is isotropic with a correlation scale equal to the baffle depth. When
the baffle depth is much larger than an acoustic wavelength, the random pressure on the baffle is isotropic with a correlation scale equal to an acoustic wavelength. Application of the results to surface generated ambient noise in the ocean is discussed.
Document Type: Research Article
Publication date: 01 January 1968
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