发明名称 |
Microphone apparatus |
摘要 |
A reference microphone is disposed close to a primary microphone through an enclosure wall of an appliance incorporating microphones, and a noise generated by mechanical systems and included in an output of the primary microphone is canceled by an adaptive filter. In a smaller hardware scale than a case of mounting a sensor for noise reference directly to a noise source, a noise component can be canceled more effectively depending on changes of noise environments.
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申请公布号 |
US5563954(A) |
申请公布日期 |
1996.10.08 |
申请号 |
US19940197703 |
申请日期 |
1994.02.17 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ONO, KIMINORI;IBARAKI, SATORU;YAMASHINA, YUJI |
分类号 |
H03H17/02;H03H17/00;H03H21/00;H04B3/04;H04N5/225;H04R1/40;H04R3/00;(IPC1-7):G10K11/16 |
主分类号 |
H03H17/02 |
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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