| 摘要 |
An acoustic structure includes a first, rigid panel ( 7 ), a second, rigid panel ( 11 ) aligned in spaced, substantially parallel, relationship with the first panel ( 7 ), a multiplicity of partition walls ( 15 ) running transverse to the panels of the panels ( 7, 11 ) and dividing the interior space of the enclosures into a single layer of cells ( 17 ) bounded at one face by the inside of the first panel ( 7 ) and bounded at the opposite face by the inside of the second panel ( 11 ), the partition walls ( 15 ) being bonded at the one face to the inside of the first panel ( 7 ) and at the opposite face to the inside of the second panel ( 11 ), and a multiplicity of apertures ( 19 ) in the partition walls ( 15 ) providing communication between adjacent cells of the single layer of cells ( 17 ).
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