发明名称 Directional microphone assembly
摘要 The present invention relates to a directional microphone assembly comprising a front and a rear microphone for compact communication devices, such as hearing aids, mobile phones etc. The present invention integrates most or all electronic processing circuits required to form a directional microphone output signal using a front and a rear microphone signal. Accordingly, the directional microphone assembly according to the present invention occupies less volume compared to traditional microphone assemblies.
申请公布号 US2001008559(A1) 申请公布日期 2001.07.19
申请号 US20010764060 申请日期 2001.01.19
申请人 ROO DION IVO DE 发明人 ROO DION IVO DE
分类号 H04R3/00;H04R25/00;H04R29/00;(IPC1-7):H04R3/00;H04R1/02;H04R9/08 主分类号 H04R3/00
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