Title:
ACOUSTIC SIGNAL OUTPUT DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/100815
Kind Code:
A1
Abstract:
Provided is an acoustic signal output device which comprises: a concave reflector that has, on the inner side thereof, a circular paraboloid or a surface which approximates a circular paraboloid; a first driver unit that is disposed on the inner side of the reflector; a second driver unit that has a diaphragm which is a portion of the reflector; and a second housing that houses therein the second driver unit. The second housing is disposed outside the reflector. From the first driver unit, a first acoustic signal is emitted to one side and a second acoustic signal is emitted to the other side. Further, due to vibration of the diaphragm, from the second driver unit, a third acoustic signal is emitted to one side and a fourth acoustic signal is emitted to the other side. The third acoustic signal is emitted to the inner side of the reflector. A wall part of the second housing is provided with one or more forth sound holes that guide a fourth acoustic signal to the outside of the reflector.
Inventors:
KAKO TATSUYA (JP)
CHIBA HIRONOBU (JP)
CHIBA HIRONOBU (JP)
Application Number:
PCT/JP2022/041804
Publication Date:
May 16, 2024
Filing Date:
November 10, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04R1/26; H04R1/34
Foreign References:
| JP2022531254A | 2022-07-06 | |||
| JP2022546523A | 2022-11-04 | |||
| JP2008211642A | 2008-09-11 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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