JPS6450100A - Sound absorbing material for speaker - Google Patents
Sound absorbing material for speakerInfo
- Publication number
- JPS6450100A JPS6450100A JP62207377A JP20737787A JPS6450100A JP S6450100 A JPS6450100 A JP S6450100A JP 62207377 A JP62207377 A JP 62207377A JP 20737787 A JP20737787 A JP 20737787A JP S6450100 A JPS6450100 A JP S6450100A
- Authority
- JP
- Japan
- Prior art keywords
- sound absorbing
- speaker
- absorbing material
- sio2
- alumina
- 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.)
- Granted
Links
Abstract
PURPOSE: To upgrade tone quality improvement effect by forming an inorganic material consisting essentially of an alumina (Al2 O3 ) and silica (SiO2 ) fiber into felt type. CONSTITUTION: The inorganic material consisting essentially of alumina (Al2 O3 ) and silica (SiO2 ) is used as the short fiber and is formed into the felt type for the sound absorbing material. The resonance and the standing wave in a cavity 3 provided in the back of a speaker unit are extremely decreased and the distortion is reduced by using the sound absorbing material 5 for speaker. As a result, the improvement of the tone quality is attained and the sound absorbing property in a low pitched sound rauge is improved by the increase of surface density.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62207377A JPH0673078B2 (en) | 1987-08-20 | 1987-08-20 | Sound absorbing material for speakers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62207377A JPH0673078B2 (en) | 1987-08-20 | 1987-08-20 | Sound absorbing material for speakers |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6450100A true JPS6450100A (en) | 1989-02-27 |
JPH0673078B2 JPH0673078B2 (en) | 1994-09-14 |
Family
ID=16538719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62207377A Expired - Lifetime JPH0673078B2 (en) | 1987-08-20 | 1987-08-20 | Sound absorbing material for speakers |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0673078B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111065017A (en) * | 2015-05-18 | 2020-04-24 | 苹果公司 | Audio speaker with back chamber containing adsorbent material |
-
1987
- 1987-08-20 JP JP62207377A patent/JPH0673078B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111065017A (en) * | 2015-05-18 | 2020-04-24 | 苹果公司 | Audio speaker with back chamber containing adsorbent material |
US11026018B2 (en) | 2015-05-18 | 2021-06-01 | Apple Inc. | Audio speaker with back volume containing adsorptive material |
CN111065017B (en) * | 2015-05-18 | 2022-06-03 | 苹果公司 | Audio speaker with back chamber containing adsorbent material |
Also Published As
Publication number | Publication date |
---|---|
JPH0673078B2 (en) | 1994-09-14 |
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