A wave field synthesis approach to reproduction of spatially correlated sound fields

The Journal of the Acoustical Society of America
Alain BerryOlivier Robin

Abstract

This article discusses an open-loop wave field synthesis (WFS) approach for the reproduction of spatially correlated sound fields. The main application concerns laboratory reproduction of turbulent boundary layer wall pressure on aircraft fuselages and measurement of their sound transmission loss. The problem configuration involves reconstruction of random sound pressure distributions on a planar reproduction surface using a planar array of reproduction monopoles parallel to the reproduction plane. In this paper, the WFS formulation is extended to sound fields with imposed time and spatial correlation properties (or equivalently imposed cross-spectral density in the frequency and wave number domains). Numerical examples are presented for the reproduction of a propagating plane wave, diffuse acoustic field and wall pressure in subsonic or supersonic turbulent boundary layers. The reproduction accuracy is examined in terms of the size of the source plane and reproduction plane, their separation, and the number of reproduction sources required per acoustic wavelength. While the reproduction approach cannot reconstruct sub-wavelength correlation scales of subsonic turbulent boundary layers, it effectively reconstructs correlation s...Continue Reading

References

Jun 11, 2009·The Journal of the Acoustical Society of America·J Rohlfing, P Gardonio
Oct 26, 2010·The Journal of the Acoustical Society of America·Blandine ArguillatGilles Robert
Feb 10, 2011·The Journal of the Acoustical Society of America·Teresa Bravo, Cédric Maury

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Citations

Mar 8, 2013·The Journal of the Acoustical Society of America·Mingsian R BaiChing-Cheng Chen
Jun 8, 2013·The Journal of the Acoustical Society of America·Olivier RobinStéphane Moreau
Jul 6, 2014·The Journal of the Acoustical Society of America·Olivier RobinNoureddine Atalla
Jun 9, 2014·The Journal of the Acoustical Society of America·Olivier RobinStéphane Moreau
Jun 3, 2018·The Journal of the Acoustical Society of America·Christophe MarchettoAlain Berry

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