发明名称 METHOD AND DEVICE FOR THE ELECTROACOUSTIC TRANSMISSION OF ACOUSTIC ENERGY
摘要 The invention relates to an electroacoustic transducer which can be used as both a microphone and a loudspeaker and for the three-dimensional absorption and emission of acoustic energy comprises several freely oscillating membranes (1) which are each suspended in front of funnel-shaped separating walls (4).
申请公布号 WO9957936(A2) 申请公布日期 1999.11.11
申请号 WO1999EP02927 申请日期 1999.04.29
申请人 BOERDER, KLAUS;KAETEL, KLAUS 发明人 KAETEL, KLAUS
分类号 G11C7/00;G11C27/02 主分类号 G11C7/00
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