Title:
SOUND WAVE SHIELDING HOOD AND SOUND SOURCE DIRECTION DETECTING DEVICE INCLUDING SOUND WAVE SHIELDING HOOD
Document Type and Number:
WIPO Patent Application WO/2023/100262
Kind Code:
A1
Abstract:
The present invention provides a sound wave shielding hood 8 that can suppress the reception of an external sound arriving from the outside of a direction detection range TA and thereby reduce erroneous detection due to a grating lobe resulting from the external sound and a sound source direction detecting device 1 including the sound wave shielding hood 8. The sound wave shielding hood 8 is configured to prevent an array sensor 3, which includes multiple microphones 9 for receiving sound waves, from receiving an external sound arriving from the outside of a preset direction detection range TA and is configured to shield at least one of the multiple microphones 9 from a sound wave arriving from a periphery OE of the direction detection range TA.
Inventors:
OKA TOMOMICHI (JP)
ODA MASAHIRO (JP)
KUSHIDA YASUO (JP)
ODA MASAHIRO (JP)
KUSHIDA YASUO (JP)
Application Number:
PCT/JP2021/043942
Publication Date:
June 08, 2023
Filing Date:
November 30, 2021
Export Citation:
Assignee:
JFE ADVANTECH CO LTD (JP)
International Classes:
H04R1/20; H04R1/08; H04R1/40; H04R3/00
Domestic Patent References:
| WO2018056214A1 | 2018-03-29 |
Foreign References:
| JP2013135373A | 2013-07-08 | |||
| JP2009071510A | 2009-04-02 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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