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Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers

  • US 8,789,652 B2
  • Filed: 02/04/2010
  • Issued: 07/29/2014
  • Est. Priority Date: 02/06/2009
  • Status: Active Grant
First Claim
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1. An arrangement comprising:

  • a plurality of attenuators for attenuating acoustic waves, each attenuator comprising a first body defining a first cavity therein and a first elongate open aperture extending across at least a substantial portion of the first body, the first body being configured to attenuate the acoustic waves over a resonant frequency band, andwherein at least some of the plurality of attenuators are arranged periodically into a plurality of rows, wherein a distance between adjacent ones of the plurality of rows is selected such that the plurality of rows of attenuators are configured to attenuate the acoustic waves over a further selected resonant frequency band.

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