发明名称 |
Piezoelectric transducer with multiple electrode areas |
摘要 |
An electro-acoustic transducer comprising a flexible film of piezoelectric material, at least one electrode provided on one side of said film amd a plurality of electrodes provided on the other side of said film to form a piezoelectric diaphragm and said piezoelectric diaphragm is imparted with a locally differing resiliency and/or tension, is provided. By using this piezoelectric electro-acoustic transducer in a loudspeaker, it is possible to improve acoustic characteristics thereof particularly in a high frequency range, to obtain a variety of acoustic characteristics and to effect motional feed back to minimize distortion of reproduced sound without involving any difficulty in manufacturing or affecting proper performance of the transducer.
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申请公布号 |
US4170742(A) |
申请公布日期 |
1979.10.09 |
申请号 |
US19770822061 |
申请日期 |
1977.08.05 |
申请人 |
PIONEER ELECTRONIC CORP;TOKOROZAWA ELECTRONIC CORP |
发明人 |
ITAGAKI, TADASI;IWAMA, KIYONORI;YOSHIMI, TOSHIKAZU |
分类号 |
H04R17/00;(IPC1-7):H01L41/10 |
主分类号 |
H04R17/00 |
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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