Vehicle cab noise suppressing system
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United States of America Patent
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Mar 17, 2009
Grant Date -
Jun 28, 2007
app pub date -
Dec 22, 2005
filing date -
Dec 22, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A vehicle cab noise suppressing system includes a cab interior panel having an opening exposed to acoustic noise in the cab, an acoustic resonator chamber, and a conduit communicating the resonator chamber to the opening. The resonator chamber is formed by a plurality of walls which are spaced apart from the interior panel and which are formed by a second panel. A third panel cooperates with the walls to enclose the resonator chamber. The chamber volume and the diameter and length of the conduit are chosen so as to acoustically tune the chamber to a noise frequency in the cab and thereby reduce noise in the cab.
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