Title:
SOUND-ABSORBING MEMBER, SOUND-ABSORBING PANEL, AND SOUND-ABSORBING WALL
Document Type and Number:
WIPO Patent Application WO/2023/013323
Kind Code:
A1
Abstract:
A sound-absorbing unit 10 has a plurality of hollow portions having shapes and/or sizes different from each other. In a perforated plate 20 constituting walls of hollow portions included in the plurality of hollow portions, perforations that cause the inside and the outside of the hollow portions to communicate with each other are formed. The surface of the perforated plate 20 includes a perforated region in which a plurality of perforations are formed, and an unperforated region in which no perforation is formed.
Inventors:
GOMI MASAKI (JP)
TAIRA YUDAI (JP)
TAIRA YUDAI (JP)
Application Number:
PCT/JP2022/026161
Publication Date:
February 09, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
PIXIE DUST TECH INC (JP)
International Classes:
G10K11/16; E01B19/00; E01F8/00; E04B1/84; G10K11/172
Foreign References:
| JP2009030432A | 2009-02-12 | |||
| JPH0962267A | 1997-03-07 | |||
| JP2017115572A | 2017-06-29 |
Other References:
WU, F.XIAO, YYU, DI.ZHAO, H.WANG, Y.WEN, J: "Low-frequency sound absorption of hybrid absorber based on micro-perforated panel and coiled-up channels", APPLIED PHYSICS LETTERS, vol. 114, no. 15, 2019, XP012237059, Retrieved from the Internet DOI: 10.1063/1.5090355
Attorney, Agent or Firm:
IPTECH PATENT PROFESSIONAL CORPORATION (JP)
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