发明名称 |
Acoustic transducers with improved frequency response |
摘要 |
An acoustic transducer has two partially annular resonators arranged in an ante-chamber of a transducer plate, the resonators being formed by annular channels which are provided in an upper housing component which are sealed from the exterior by a covering plate. The channels are linked to the ante-chamber of the transducer plate through openings.
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申请公布号 |
US4860368(A) |
申请公布日期 |
1989.08.22 |
申请号 |
US19870087324 |
申请日期 |
1987.08.20 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
PAYER, ERNST;SCHIERL, HANS |
分类号 |
H04M1/03;H04R1/22;H04R1/28;H04R17/00 |
主分类号 |
H04M1/03 |
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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