发明名称 |
Pressure gradient type microphone apparatus with acoustic terminals provided by acoustic passages |
摘要 |
In a small-sized pressure gradient type microphone apparatus, a plurality of omni-directional microphone units are encased within a microphone holder. A plurality of acoustic passages having first and second ends are provided within the microphone holder for coupling the sound inlets of the plurality of omni-directional microphone units respectively to an outer space of the microphone holder. The second ends of the acoustic passages opened to the outer space of the microphone holder are arranged to be apart from each other at distances larger than distances between the sound inlets of the corresponding microphone units coupled at the first ends of the acoustic passages.
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申请公布号 |
US5526430(A) |
申请公布日期 |
1996.06.11 |
申请号 |
US19940283912 |
申请日期 |
1994.08.03 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ONO, KIMINORI;IBARAKI, SATORU;YAMASHINA, YUJI |
分类号 |
H04R1/40;(IPC1-7):H04R5/00 |
主分类号 |
H04R1/40 |
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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