发明名称 |
Electro-mechanical-acoustic transducing arrangement |
摘要 |
<p>An electro-mechanical-acoustic transducing device includes: an electro-mechanical-acoustic transducer (12) which has at least one resonance frequency, for converting an input electric signal into only vibration, or into both vibration and sound; a signal supplying unit (10,11) for supplying a signal in a frequency band which includes at least one of the resonance frequencies of the electro-mechanical-acoustic transducer as the input signal of the electro-mechanical-acoustic transducer; and a frequency detector (13) for detecting a signal component having a frequency corresponding to the mechanical resonance frequency of the electro-mechanical-acoustic transducer in an electric signal which is output from the electro-mechanical-acoustic transducer, and outputting the signal component as a part of an input signal to the signal supplying unit. <IMAGE></p> |
申请公布号 |
EP0888032(A1) |
申请公布日期 |
1998.12.30 |
申请号 |
EP19980111507 |
申请日期 |
1998.06.23 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SAIKI, SHUJI;SATO, KAZUE;USUKI, SAWAKO;KUZE, MITSUKAZU |
分类号 |
G08B6/00;H04M19/04;H04R3/04;(IPC1-7):H04R3/04;B06B1/02;H04M1/72 |
主分类号 |
G08B6/00 |
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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