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Wednesday, July 10 • 15:30 - 18:00
CANCELLED: SCATTERED SOUND FIELD SEPARATION BASED ON THE EQUIVALENT SOURCE METHOD

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Scattered sound field separation is important for three-dimensional active scattered noise control. However, because the free-field Green's function fails to characterize the spherical scattering transfer function, the equivalent source strength of the solution is incorrect when the equivalent source method (ESM) is applied in near-field acoustic holography. A constrained scattered sound field separation method is proposed that overcomes the application limitations of the ESM. In this paper, a rigid sphere is considered. By constraining the direct sound pressure on the measurement surface and extending the equation to be solved, a more accurate equivalent source strength is obtained. The correctness of the method is shown with a theoretical study, and the feasibility and effectiveness are examined with a numerical simulation.


Wednesday July 10, 2019 15:30 - 18:00 EDT
St-Laurent 3, Board 02-A
  T10 Sig. Proc. & nonlin. mthds., RS01 Sign process tech for ac array syst …