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Acoustic attenuator and method of attenuation of noise

  • US 20020166721A1
  • Filed: 05/11/2001
  • Published: 11/14/2002
  • Est. Priority Date: 05/11/2001
  • Status: Abandoned Application
First Claim
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1. A liner for reducing internal acoustic noise comprising:

  • a sound penetrable member;

    a second member, said second member spaced from said first member and cooperating with said sound penetrable member to form a hollow there between;

    a plurality of acoustic resonators positioned between said sound penetrable member and said second member, each of said plurality of acoustic resonators having an opening and an acoustical resonance cavity therein for ingress of a sound wave whereby the acoustical resonance cavity generates a resonance sound wave causing vibration displacement of each of said plurality of acoustic resonators thereby causing dissipation of the sound wave by conversion of acoustical energy into vibration energy.

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