DIRECTIONAL ACOUSTIC SENSOR, AND METHODS OF ADJUSTING DIRECTIONAL CHARACTERISTICS AND ATTENUATING ACOUSTIC SIGNAL IN SPECIFIC DIRECTION USING THE SAME
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United States of America Patent
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Issued Date -
Dec 24, 2020
app pub date -
Jan 9, 2020
filing date -
Jun 20, 2019
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Abstract
Disclosed are a directional acoustic sensor, a method of adjusting directional characteristics using the directional acoustic sensor, and a method of attenuating an acoustic signal in a specific direction using the directional acoustic sensor. The directional acoustic sensor includes a plurality of resonance units arranged to have different directionalities and a signal processor configured to adjust directional characteristics by calculating at least one of a sum of and a difference between outputs of the resonance units. In this state, the signal processor attenuates an acoustic signal in a specific direction by using a plurality of directional characteristics obtained by calculating at least one of the sum of and the difference between the outputs of the resonance units at a certain ratio.
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