发明名称 |
ELEKTRETWANDLER MIT VERAENDERLICHER ELEKTRETFOLIENDICKE |
摘要 |
An acoustic transducer for producing highly directional characteristics comprises a metalized backplate (130) facing the flat surface (134) of an electrostatically charged electret foil (132). The thickness of the electret foil varies along the length thereof according to a predetermined relationship. The sensitivity of the electret transducer varies directly with the thickness of the electret foil. |
申请公布号 |
DE3242554(A1) |
申请公布日期 |
1983.05.26 |
申请号 |
DE19823242554 |
申请日期 |
1982.11.18 |
申请人 |
WESTERN ELECTRIC CO.,INC. |
发明人 |
JOY BUSCH-VISHNIAC,ILENE;LEE WALLACE JUN.,ROBERT;EDWARD WEST,JAMES |
分类号 |
H04R19/00;G01H11/06;G10K11/32;H04R19/01;(IPC1-7):04R19/01;04R1/32 |
主分类号 |
H04R19/00 |
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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