JPS6440895A - Sound absorber - Google Patents
Sound absorberInfo
- Publication number
- JPS6440895A JPS6440895A JP62196625A JP19662587A JPS6440895A JP S6440895 A JPS6440895 A JP S6440895A JP 62196625 A JP62196625 A JP 62196625A JP 19662587 A JP19662587 A JP 19662587A JP S6440895 A JPS6440895 A JP S6440895A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- edge
- aperture
- box
- rear surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
PURPOSE: To lower a sound absorbing frequency band by forming edges of the edge which is spanned from the surface of an aperture to the front surface of a diaphragm and the edge of which the front end is spanned from the rear surface of the aperture to the rear surface of the diaphragm and which is formed broader from the edge toward the center of the diaphragm. CONSTITUTION: The basic structure of spanning the edge 2 between the front surface of the aperture of the box 1 and the front surface of the diaphragm 3 is the same as the basic structure of the conventional device and, further, the edge 4 of which the front end is spanned from the rear surface of the diaphragm 3 to the rear surface of the aperture of the box 1 and which is formed broader toward the center of the diaphragm 3 from the edge 2 on the front surface side is mounted at the box. Only the front end on the inner side of the edge 4 is mounted at the diaphragm 3. The effective area S (the area facing the inside of the box 1) of the diaphragm 3 is reduced without decreasing the size of the diaphragm 3 by mounting such edge 4. The resonance frequency fr' is then lowered and the sound absorption side frequency band is lowered.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62196625A JPS6440895A (en) | 1987-08-06 | 1987-08-06 | Sound absorber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62196625A JPS6440895A (en) | 1987-08-06 | 1987-08-06 | Sound absorber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6440895A true JPS6440895A (en) | 1989-02-13 |
Family
ID=16360871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62196625A Pending JPS6440895A (en) | 1987-08-06 | 1987-08-06 | Sound absorber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6440895A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63100134A (en) * | 1986-10-15 | 1988-05-02 | Kawasaki Steel Corp | Manufacture of cold rolled steel sheet for extra deep drawing of thick product |
JP2019511014A (en) * | 2016-02-08 | 2019-04-18 | ユニヴェルシテ パリ−スュッドUniversite Paris−Sud | Sound absorber, sound barrier and method for design and manufacture |
-
1987
- 1987-08-06 JP JP62196625A patent/JPS6440895A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63100134A (en) * | 1986-10-15 | 1988-05-02 | Kawasaki Steel Corp | Manufacture of cold rolled steel sheet for extra deep drawing of thick product |
JP2019511014A (en) * | 2016-02-08 | 2019-04-18 | ユニヴェルシテ パリ−スュッドUniversite Paris−Sud | Sound absorber, sound barrier and method for design and manufacture |
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