JPS5769993A - Speaker device - Google Patents
Speaker deviceInfo
- Publication number
- JPS5769993A JPS5769993A JP14659280A JP14659280A JPS5769993A JP S5769993 A JPS5769993 A JP S5769993A JP 14659280 A JP14659280 A JP 14659280A JP 14659280 A JP14659280 A JP 14659280A JP S5769993 A JPS5769993 A JP S5769993A
- Authority
- JP
- Japan
- Prior art keywords
- constitution
- atmosphere
- thin film
- resonance frequency
- absorbing material
- 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
- 239000011358 absorbing material Substances 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000010409 thin film Substances 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
- H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
- H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
PURPOSE:To lower the minimum resonance frequency, by sectioning a totally enclosed type or other type of cabinet into a plurality of closed spaces through thin film, and sealing one or a plurality of substances in which the vapor pressure is at one atmosphere or less at normal temperature to a part or all the enclosed spaces together with sound absorbing material. CONSTITUTION:A totally enclosed type cabinet 1 is sectioned into two closed space with a thin film 3 which can almost be neglected acoustically and no gaseous molecular is permitted entering. In the closed space where no speaker unit 2 is fitted, a sound absorbing material 4 immersed with a substance the vapor pressure of which is at one atmosphere or less at room temperature is sealed. With this constitution, the speaker device can decrease the minimum resonance frequency in comparison with a conventional speaker with the same size.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14659280A JPS5769993A (en) | 1980-10-20 | 1980-10-20 | Speaker device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14659280A JPS5769993A (en) | 1980-10-20 | 1980-10-20 | Speaker device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5769993A true JPS5769993A (en) | 1982-04-30 |
Family
ID=15411196
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14659280A Pending JPS5769993A (en) | 1980-10-20 | 1980-10-20 | Speaker device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5769993A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5912686A (en) * | 1982-07-13 | 1984-01-23 | Matsushita Electric Ind Co Ltd | Speaker system |
EP1786235A1 (en) * | 2004-08-23 | 2007-05-16 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker system |
EP1868410A1 (en) * | 2005-03-28 | 2007-12-19 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker device |
-
1980
- 1980-10-20 JP JP14659280A patent/JPS5769993A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5912686A (en) * | 1982-07-13 | 1984-01-23 | Matsushita Electric Ind Co Ltd | Speaker system |
JPH0570993B2 (en) * | 1982-07-13 | 1993-10-06 | Matsushita Electric Ind Co Ltd | |
EP1786235A1 (en) * | 2004-08-23 | 2007-05-16 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker system |
JPWO2006022199A1 (en) * | 2004-08-23 | 2008-05-08 | 松下電器産業株式会社 | Speaker device |
EP1786235A4 (en) * | 2004-08-23 | 2011-03-09 | Panasonic Corp | Loudspeaker system |
US7974423B2 (en) | 2004-08-23 | 2011-07-05 | Panasonic Corporation | Loudspeaker system |
EP1868410A1 (en) * | 2005-03-28 | 2007-12-19 | Matsushita Electric Industrial Co., Ltd. | Loudspeaker device |
EP1868410A4 (en) * | 2005-03-28 | 2011-04-06 | Panasonic Corp | Loudspeaker device |
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