JPS6450100A - Sound absorbing material for speaker - Google Patents

Sound absorbing material for speaker

Info

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
Application number
JP62207377A
Other languages
Japanese (ja)
Other versions
JPH0673078B2 (en
Inventor
Masakatsu Sakamoto
Toshihiro Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kenwood KK
Original Assignee
Kenwood KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kenwood KK filed Critical Kenwood KK
Priority to JP62207377A priority Critical patent/JPH0673078B2/en
Publication of JPS6450100A publication Critical patent/JPS6450100A/en
Publication of JPH0673078B2 publication Critical patent/JPH0673078B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62207377A 1987-08-20 1987-08-20 Sound absorbing material for speakers Expired - Lifetime JPH0673078B2 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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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