发明名称 Sound pick-up and reproduction device, particularly for audio conferences.
摘要 <p>Sound pick-up and reproduction device, in particular for an audio-conference between several speakers distributed within an arbitrary area substantially around a central point positioned in a reference plane, in particular around a table, comprising a directional microphone (2) and a loudspeaker (9) whose diaphragm is positioned opposite the microphone, the loudspeaker and microphone being placed in an orientation substantially perpendicular to the reference plane. The microphone is of the cardioid type and exhibits a directivity extending perpendicularly to the reference plane and an omnidirectionality parallel to this plane, the microphone being positioned in the upper part of the device and the loudspeaker in the lower part. &lt;IMAGE&gt;</p>
申请公布号 EP0297975(A1) 申请公布日期 1989.01.04
申请号 EP19880401654 申请日期 1988.06.28
申请人 LARVOR, RENE;PONTET, ROBERT 发明人 LARVOR, RENE
分类号 H04R27/00 主分类号 H04R27/00
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