发明名称 A DIRECTIONAL MICROPHONE ASSEMBLY
摘要 <p>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.</p>
申请公布号 WO2001054451(A2) 申请公布日期 2001.07.26
申请号 IB2001000045 申请日期 2001.01.18
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