发明授权
- 专利标题: Acoustic structure
- 专利标题(中): 声学结构
-
申请号: US12660813申请日: 2010-03-04
-
公开(公告)号: US08157052B2公开(公告)日: 2012-04-17
- 发明人: Junichi Fujimori , Yoshikazu Honji
- 申请人: Junichi Fujimori , Yoshikazu Honji
- 申请人地址: JP Hamamatsu-shi
- 专利权人: Yamaha Corporation
- 当前专利权人: Yamaha Corporation
- 当前专利权人地址: JP Hamamatsu-shi
- 代理机构: Pillsbury Winthrop Shaw Pittman LLP
- 优先权: JP2009-053709 20090306; JP2010-047185 20100303
- 主分类号: E04B1/84
- IPC分类号: E04B1/84 ; E04B1/82 ; E04B1/74
摘要:
In an acoustic structure, sound absorbing effect is achieved by interference between incident waves falling in an opening portion and reflected waves radiated from the opening as a result of resonance occurring within a hollow member in response to the incident waves, and a sound absorbing region is formed, for example, in a frontal direction of the opening portion. Sound scattering effect is achieved through interaction between the above-mentioned interference and interference between the incident waves and sound waves radiated from the opening portion, and a sound scattering region is formed, for example, near the sound absorbing region. A sound scattering effect is achieved by flows of gas molecules being produced in an oblique direction, not normal to the opening portion and reflective surface, due to a phase difference between the sound waves radiated from the opening portion and the sound waves radiated from the reflective surface.
公开/授权文献
- US20100224441A1 Acoustic structure 公开/授权日:2010-09-09