发明名称 HIGH SENSITIVITY* LOW NOISE UNDERWATER MIKE
摘要 PURPOSE:To reduce noise and enhance sensitivity of an underwater mike by equalizing static pressures applied to a liquid inside the mike and to an txternal medium to offset a drag acting on each of two sets of parallel-system bimorph piezoelectric ele ments.
申请公布号 JPS52410(A) 申请公布日期 1977.01.05
申请号 JP19750075714 申请日期 1975.06.23
申请人 HITACHI LTD 发明人 FUKUSHIMA MASATADA
分类号 H04R1/44;H04R17/02 主分类号 H04R1/44
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