| 发明名称 |
MICROPHONE |
| 摘要 |
PURPOSE:To make possible the high sensitivity detection of the sound waves of arbitrarily selected frequency by applying the oscillation of frequency 2f in the film face direction of oscillating film and detecting the sound waves of frequency f. |
| 申请公布号 |
JPS5251928(A) |
申请公布日期 |
1977.04.26 |
| 申请号 |
JP19750127694 |
申请日期 |
1975.10.22 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
SUGUNO HIROYUKI;IBARAKI SATORU |
| 分类号 |
H04R23/02;(IPC1-7):04R23/02 |
主分类号 |
H04R23/02 |
| 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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