JPS6440895A - Sound absorber - Google Patents

Sound absorber

Info

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
Application number
JP62196625A
Other languages
Japanese (ja)
Inventor
Yoshitaka Kurihara
Shigeru Murabayashi
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP62196625A priority Critical patent/JPS6440895A/en
Publication of JPS6440895A publication Critical patent/JPS6440895A/en
Pending legal-status Critical Current

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.
JP62196625A 1987-08-06 1987-08-06 Sound absorber Pending JPS6440895A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
USD275193S (en) Vehicle wheel
JPS5388718A (en) Sealed head phone
US4694499A (en) Directional microphone with acoustic washer
JPS56108307A (en) Device for supporting engine
JPS6478902A (en) Low noise tire wheel
USD262790S (en) Chassis mounted superstructure carrying frame for soft-top vehicles
JPS6440895A (en) Sound absorber
WO1995027386A1 (en) Horn driver
JPS57198122A (en) Mounting device of engine
CA2116178A1 (en) Speaker System
JPS5686823A (en) Engine rear mounting construction
USD244467S (en) Sound intensifying receiver
JPS5723395A (en) Loudspeaker
JPS56125190A (en) Speaker system
JPS5733044A (en) Back mirror
JPS5589901A (en) Sound absorption body for speaker in automobile door
JPS5392120A (en) Method of mounting directional microphone
JPS56166697A (en) Horn speaker
USD274142S (en) Wind fairing
JPS5317905A (en) Motor attached with outside fan and cover
KR900011298Y1 (en) Speaker
EP0127247A3 (en) Tunable response transducer
JPS56125189A (en) Speaker system
USD248950S (en) Auxiliary telephone-receiver saddle
JPS553233A (en) Acoustic vibration device