发明名称 |
System for selective sound capture for reverberant and noisy environment |
摘要 |
A system for selective sound capture for hands-free telephony and multimedia workstations of the acoustic antenna type with an aerial formed by a member with a concave cylindrical surface. The system includes a plurality of electro-acoustic transducers which are distributed over and in the vicinity of the cylindrical surface. Circuits for partial summation of a plurality of analog sound signals make it possible to form elementary acoustic antennas and a summation circuit produces a resultant analog signal representative of the sound signal arising from a useful speaking area.
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申请公布号 |
US5684882(A) |
申请公布日期 |
1997.11.04 |
申请号 |
US19950502695 |
申请日期 |
1995.07.14 |
申请人 |
FRANCE TELECOM |
发明人 |
MAHIEUX, YANNICK;LE TOURNEUR, GREGOIRE;SALIOU, ALAIN |
分类号 |
H04R1/40;H04R3/00;(IPC1-7):H04R3/00 |
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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