发明名称 |
Method of producing electroacoustic converters, preferably microphones, and converters produced according to the method |
摘要 |
An electroacoustic converter with a closed-off resonance chamber, e.g. a microphone, including frame (1) carrying an electrode (2) and a diaphragm (3) connected by a connecting member (5) to an amplifier. A band (17) of plastically deformable material is sealingly attached to the frame via a weld joint (15) for providing good bass reproduction. The sensitivity of the microphone, which depends on the volume of the resonance chamber, is adjusted to the desired value by forming a depression (16) in the band. In production, the frames (1) are attached to the band (17) and are conveyed thereby between different operation stations. Sensitivity is measured by a measuring apparatus (20) and a loudspeaker (18) and is adjusted by a tool (19).
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申请公布号 |
US4697334(A) |
申请公布日期 |
1987.10.06 |
申请号 |
US19840684594 |
申请日期 |
1984.12.21 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON |
发明人 |
MADSEN, HENNING S.;SERGEROE, TOMMY S.;JOHANSSON, KARL A. |
分类号 |
H04R1/28;H04R1/22;H04R19/00;H04R19/01;H04R31/00;(IPC1-7):H04R31/00;H04R1/02;H04R7/00 |
主分类号 |
H04R1/28 |
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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