Title:
SOUND ABSORBING STRUCTURE
Document Type and Number:
Japanese Patent JP3251322
Kind Code:
B2
Abstract:
PURPOSE: To improve the sound absorptivity in a wide frequency range by forming an air layer of thickness size, which attenuates the frequencies of plural sounds respectively, behind and arranging plural cloths successively to a sound source.
CONSTITUTION: A curtain 3 is installed so as to form an air layer, for example, 300mm behind a wall surface 2 facing the sound source 1, the air layer is f6rmed 100mm behind the wall surface 2, and the curtain 4 which is relatively thick and has a large flow resistance value is installed. Similarly, a curtain 5 as a 2nd layer is installed so as to form an air layer 50mm behind the curtain 3. In this case, a thin curtain 6 made of, for example, lace is installed in front of the curtain 5 installed as the 2nd layer while almost superposed to slightly increase the flow resistance value, and then the sound absorptivity in a high frequency range is further improved. At this time, the respective curtains are suspended between the sound source 1 and wall surface 2 by, for example, curtain rails to improve the handling.
Inventors:
Yasumasa Kimura
Toshimitsu Tanaka
Toshimitsu Tanaka
Application Number:
JP9082292A
Publication Date:
January 28, 2002
Filing Date:
April 10, 1992
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
E04B1/86; E04H3/30; G10K11/16; G10K11/162; G10K15/00; (IPC1-7): G10K11/162; E04B1/86; E04H3/30; G10K15/00
Domestic Patent References:
| JP3287945A | ||||
| JP6417098A | ||||
| JP5594221A | ||||
| JP2269243A |
Attorney, Agent or Firm:
Takeo Honjo
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