| 发明名称 |
Electroacoustic transducer |
| 摘要 |
For increasing the bandwidth of an electroacoustic omnidirectional transducer a piezoceramic tube is provided at its outer circumference with segment-shaped additional mass members having a larger outer surface area than the piezoceramic tube.
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| 申请公布号 |
US4823327(A) |
申请公布日期 |
1989.04.18 |
| 申请号 |
US19870057062 |
申请日期 |
1987.06.01 |
| 申请人 |
HONEYWELL-ELAC-NAUTIK GMBH |
发明人 |
HILMERS, HORST |
| 分类号 |
B06B1/06;H04R1/40;H04R17/00;(IPC1-7):H04R17/00 |
主分类号 |
B06B1/06 |
| 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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