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Acoustic system suppressing detection of higher order modes

  • US 5,283,834 A
  • Filed: 08/26/1991
  • Issued: 02/01/1994
  • Est. Priority Date: 08/26/1991
  • Status: Expired due to Term
First Claim
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1. A method for suppressing detection of higher order mode transverse modal energy of an acoustic wave propagating longitudinally along a waveguide, comprising placing a plurality of acoustic sensors at designated locations across said waveguide and summing the outputs of said acoustic sensors such that the resultant sum is zero for a given higher order mode.

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