Title:
可聴音響周波数管理のための音波バリア
Document Type and Number:
Japanese Patent JP2012531629
Kind Code:
A
Abstract:
A sound barrier comprises a substantially periodic array of structures disposed in a first medium having a first density, the structures being made of a second medium having a second density different from the first density, wherein one of the first and second media is a porous medium other than a porous metal, the porous medium having a porosity of at least about 0.02, and wherein the other of the first and second media is a viscoelastic or elastic medium.
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Inventors:
Barker, ants
Chatterjee, Jun
Gregor, Richard, W.
Aroshina EP Suffler, Marie
Mohan tea, sana
Chatterjee, Jun
Gregor, Richard, W.
Aroshina EP Suffler, Marie
Mohan tea, sana
Application Number:
JP2012517648A
Publication Date:
December 10, 2012
Filing Date:
June 22, 2010
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES COMPANY
International Classes:
G10K11/162; B32B7/02; G10K11/16
Domestic Patent References:
| JPH0873648A | 1996-03-19 | |||
| JPS61144109U | 1986-09-05 | |||
| JP2003308074A | 2003-10-31 | |||
| JPS61144109U | 1986-09-05 | |||
| JP2006023423A | 2006-01-26 | |||
| JP2009090265A | 2009-04-30 |
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Ikeda adult
Yoshinori Shimizu
Ikeda adult