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Title:
MICROPHONE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/148859
Kind Code:
A1
Abstract:
This microphone device is provided with: a first microphone; a second microphone disposed to the rear of the first microphone in a pointing direction; an output ratio computing device that computes an output ratio (SR) which is a ratio between the intensity of a first output of the first microphone and the intensity of a second output of the second microphone; an adjustment device that adjusts the first output of the first microphone and forms a third output; and an output control device that, on the basis of the output ratio (SR), controls the third output of the adjustment device. When the output ratio (SR) is smaller than a threshold value (A1), the output control device reduces the intensity of the third output from the adjustment device so as to produce a fourth output.

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Inventors:
SUETSUGU TOSHIMITSU (JP)
KUBOTA HIROSHI (JP)
Application Number:
PCT/JP2019/001246
Publication Date:
July 23, 2020
Filing Date:
January 17, 2019
Export Citation:
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Assignee:
TOA CORP (JP)
International Classes:
H04R1/40; H04R3/00
Domestic Patent References:
WO2011048813A12011-04-28
WO2009069184A12009-06-04
Foreign References:
JPH04181897A1992-06-29
JP2013078118A2013-04-25
JP2004226656A2004-08-12
Attorney, Agent or Firm:
HAMANA Tetsuya (JP)
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