发明名称 |
Stöybeskyttelse med verifiseringsanordning |
摘要 |
Ear protecting device with a sealing section for acoustically sealing the meatus of a human, includes a sound generator with a sound outlet for being directed toward the user meatus; an inner microphone with a sound inlet from the meatus, arranged for measuring the resulting sound field in the meatus; connected to an electronics unit including a sound analyser coupled to the inner microphone, for analyzing sound characteristics of the resulting sound field in the meatus, producing analyzed sound characteristics; storing part in the electronics unit for storing measured predetermined sound characteristics of a properly functioning ear protecting device; a comparing part in the electronics unit for comparing the inner microphone analyzed sound characteristics with the stored measured predetermined sound characteristics; indicating part coupled to the comparing part for being activated if the analyzed sound characteristics differ significantly from the predetermined sound characteristics. |
申请公布号 |
NO312570(B1) |
申请公布日期 |
2002.05.27 |
申请号 |
NO20000004374 |
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):H04R25/02;A61F11/08 |
主分类号 |
H04R1/10 |
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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