发明名称 |
ELECTRODYNAMIC ACOUSTIC TRANSDUCER, METHOD FOR MANUFACTURING A FIXED POLE THEREOF, CONDENSER MICROPHONE AND CONDENSER HEADPHONES |
摘要 |
In an electrodynamic acoustic transducer which uses a surface potential of an electret dielectric film as a polarization voltage, prevention of partial suctional adhesion of a diaphragm caused by variation in surface potential across the electret dielectric film is ensured in a simple way. In an electrodynamic acoustic transducer including a diaphragm and a fixed pole which are arranged with a predetermined interval so as to face each other, a facing surface of either one of the diaphragm and the fixed pole having an electret dielectric film, a surface of the electret dielectric film is divided into a plurality of segment regions, and a predetermined surface potential is given to each of the segment regions by a polarization processing unit. |
申请公布号 |
US2015098592(A1) |
申请公布日期 |
2015.04.09 |
申请号 |
US201414312002 |
申请日期 |
2014.06.23 |
申请人 |
KABUSHIKI KAISHA AUDIO-TECHNICA |
发明人 |
AKINO Hiroshi |
分类号 |
H04R19/01;H04R31/00 |
主分类号 |
H04R19/01 |
代理机构 |
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代理人 |
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主权项 |
1. An electrodynamic acoustic transducer comprising a diaphragm and a fixed pole which are arranged with a predetermined interval so as to face each other, a facing surface of either one of the diaphragm and the fixed pole having an electret dielectric film,
wherein a surface of the electret dielectric film is divided into a plurality of segment regions, and a predetermined surface potential is given to each of the segment regions by polarization processing means. |
地址 |
Tokyo JP |