发明名称 |
Sound absorber |
摘要 |
A sound absorber arrangement includes a plurality of sound absorbing layers of porous materials such as glass wool, rock fiber or cellular plastic, and high-polymer films, are alternately laminated in a direction perpendicular to a sound incidence plane. The layer thicknesses are increased in order in a direction away from the sound incidence plane. The sound absorber arrangement makes it possible to make a sound absorbing coefficient constant over the low to high frequency sound range.
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申请公布号 |
US5512715(A) |
申请公布日期 |
1996.04.30 |
申请号 |
US19940260232 |
申请日期 |
1994.06.14 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TAKEWA, HIROYUKI;TORII, YUTAKA |
分类号 |
E04B1/99;E04B1/84;E04B1/86;G10K11/16;G10K11/162;G10K11/168;G10K11/172;(IPC1-7):E04B1/82 |
主分类号 |
E04B1/99 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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