Acoustical Physics

, Volume 59, Issue 6, pp 633–639 | Cite as

Obstacles in acoustic waveguides becoming “invisible” at given frequencies

  • A. -S. Bonnet-Ben Dhia
  • S. A. Nazarov
Classical Problems of Linear Acoustics and Wave Theory


We prove the existence of gently sloping perturbations of walls of an acoustic two-dimensional waveguide, for which several waves at given frequencies pass by the created obstacle without any distortion or with only a phase shift.


acoustic waveguide scattering invisible scatterer asymptotic analysis 


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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  1. 1.POEMS (UMR 7231 CNRS-ENSTA-INRIA), ENSTAPalaiseauFrance

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