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.
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
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