Abstract: The invention provides an acoustic attenuator comprising: a body defining a cavity therein and having at least one open aperture in fluid communication with the cavity; and opposing first and second walls, the second wall being substantially parallel to the first wall, the body comprising at least one of the first and second walls, wherein the aperture and the cavity at least partly define a resonant frequency band across which the body attenuates incident acoustic waves, and wherein the first and second walls are separated by a gap.
Type:
Grant
Filed:
March 23, 2015
Date of Patent:
June 30, 2020
Assignee:
SONOBEX LIMITED
Inventors:
Daniel Elford, Luke Chalmers, Richard Wilson
Abstract: An arrangement comprising a plurality of attenuators for attenuating acoustic waves, each attenuator of the plurality of attenuators comprising: a first body defining a cavity therein and at least one open aperture extending across a portion of the first body, the first body being configured to attenuate acoustic waves over a resonant frequency band.
Type:
Grant
Filed:
February 19, 2014
Date of Patent:
March 28, 2017
Assignee:
SONOBEX LIMITED
Inventors:
Gerard Michael Swallowe, Daniel Peter Elford, Feodor Kusmartsev, Luke Chalmers
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.
Type:
Grant
Filed:
February 4, 2010
Date of Patent:
July 29, 2014
Assignee:
Sonobex Limited
Inventors:
Gerard Michael Swallowe, Daniel Peter Elford, Feodor Kusmartsev, Luke Chalmers