发明名称 Öreterminal for stöykontroll
摘要 Ear protecting device for being positioned in the ear meatus (3) of a human, and comprising an inner microphone (M2), wherein the inner microphone (M2) has a sound inlet (S2) for being directed toward the meatus (3), arranged for converting a picked-up sound signal (52) to an output signal (51); the ear protecting device also comprising a an electronics unit (11) including sound analyzing means arranged for analyzing the output signal (51) and comparing the signal with predetermined signals corresponding to acceptable noise limits and for activating an indicator (72) when detecting a passing of these limits.
申请公布号 NO20004370(A) 申请公布日期 2002.03.04
申请号 NO20000004370 申请日期 2000.09.01
申请人 SINTEF 发明人 SVEAN, JARLE;SOERSDAL, SVEIN;PETTERSEN, ODD KR OESTERN;OTTESEN, GEORG E;STENSBY, SVERRE
分类号 H04R1/10;H04R25/00;(IPC1-7):H04R;A61F 主分类号 H04R1/10
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