发明名称 |
Directional microphone device |
摘要 |
The directional microphone device according to the present invention solves a problem of increase in thermal noise (problem of decrease in sensitivity) that occurs at the time of directivity synthesis. The directional microphone device includes: a plurality of microphones which have directional and non-directional characteristics; a control unit which generates an output signal using signals outputted from each of the plurality of microphones; and an output unit which outputs the output signal generated by the control unit. The control unit generates the output signal such that a nearly non-directional directivity and a high sensitivity are obtained in small amplitude range of the output signal, and a directivity and a low sensitivity are obtained in large amplitude range of the output signal. |
申请公布号 |
US8340316(B2) |
申请公布日期 |
2012.12.25 |
申请号 |
US20080674245 |
申请日期 |
2008.08.21 |
申请人 |
KANAMORI TAKEO;PANASONIC CORPORATION |
发明人 |
KANAMORI TAKEO |
分类号 |
H04R3/00;H02B1/00;H04R25/00;H04R29/00 |
主分类号 |
H04R3/00 |
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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