发明名称 |
ACOUSTIC TRANSMITTING AND RECEIVING UNIT |
摘要 |
An acoustic transmitting or receiving unit for transmitting or receiving acoustic energy through a planar member (2) is formed by an acoustic driver (7, 8, 9) acting on the planar member through an aperture (5) in a plate (4). The plate is attached to the planar member across its surface and the plate has greater stiffness than the planar member. |
申请公布号 |
WO9502237(A1) |
申请公布日期 |
1995.01.19 |
申请号 |
WO1994GB01470 |
申请日期 |
1994.07.07 |
申请人 |
GEC MARCONI LTD.;CROWTHER, PAUL, ANDREW |
发明人 |
CROWTHER, PAUL, ANDREW |
分类号 |
G01S7/521;G01S15/93;H04R19/02;H04R19/04 |
主分类号 |
G01S7/521 |
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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