Microphone device and control method thereof
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United States of America Patent
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Jan 16, 2018
Issued Date -
N/A
app pub date -
Sep 14, 2015
filing date -
Nov 28, 2014
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Abstract
A microphone device includes a case having a sound hole and a phase delay membrane. A plurality of non-directional microphones disposed in the case. A semiconductor chip is connected to the non-directional micro electro mechanical system (MEMS) microphones and operating in response to input signals, in which any one of the non-directional microphones forms a directional microphone by being connected with the sound hole and the phase delay membrane of the case.
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