Active absorption of sound by a cylindrical absorber in a cylindrical duct

被引：0
|
作者：
Reitan, A [1 ]
机构：
[1] Norwegian Univ Sci & Technol, Dept Phys, N-7491 Trondheim, Norway
来源：
ACTA ACUSTICA UNITED WITH ACUSTICA | 2003年 / 89卷 / 04期
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D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
We consider the problem of sound attenuation in an infinitely long cylindrical duct, with emphasis on the absorption of acoustic power by a cylindrical device centred in the duct. It is shown that for frequencies below that of the first excited eigenmode of the duct a device with two independent active surfaces can absorb all incident power. In principle this is the case regardless of the size of the absorber.
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收藏
页码：666 / 673
页数：8
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