Attenuators, arrangements of attenuators, acoustic barriers and methods for constructing acoustic barriers
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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Abstract
An attenuator for attenuating acoustic waves, the attenuator comprising: a first body defining a cavity therein and an elongate open aperture extending across a substantial portion of the first body, the first body being configured to attenuate acoustic waves over a resonant frequency band.
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Citations
19 Claims
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1. An arrangement comprising:
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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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 18, 19)
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14. An acoustic barrier for attenuating acoustic waves, the acoustic barrier comprising an arrangement comprising:
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a plurality of attenuators for attenuating the 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, and wherein 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. - View Dependent Claims (15)
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16. A method for constructing an acoustic barrier, the method comprising:
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providing an arrangement comprising a plurality of attenuators for attenuating acoustic waves, the attenuators 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, and wherein 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 so that the plurality of rows of attenuators are configured to attenuate the acoustic waves over a further selected resonant frequency band; and arranging the plurality of attenuators in the arrangement to form the acoustic barrier. - View Dependent Claims (17)
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Specification