JPS6468099A - Speaker system - Google Patents
Speaker systemInfo
- Publication number
- JPS6468099A JPS6468099A JP22431487A JP22431487A JPS6468099A JP S6468099 A JPS6468099 A JP S6468099A JP 22431487 A JP22431487 A JP 22431487A JP 22431487 A JP22431487 A JP 22431487A JP S6468099 A JPS6468099 A JP S6468099A
- Authority
- JP
- Japan
- Prior art keywords
- acoustic tube
- frequency range
- sectional area
- cross
- hollow space
- 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
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
PURPOSE:To improve radiation efficiency at low frequency range and to flatten the sound pressure characteristic of middle and high frequency range by composing an acoustic tube on the back face of a speaker unit and providing in the acoustic tube at least one hollow space having a cross-sectional area larger than the cross-sectional area of the acoustic tube. CONSTITUTION:A cabinet 5 to constitute the acoustic tube which is extended continuously from the speaker unit back surface and whose opening 8 is opened to a sound field and at least one hollow space 6 having the cross-sectional area larger than the cross-sectional area of the acoustic tube 5 are provided in the acoustic tube 5. That is to say, the sounds of the middle and high frequency range from the speaker unit back face to pass through the acoustic tube and to be radiated to the sound field is acoustically interrupted by a reactance component presented by acoustic compliance in the hollow space 6 and the hollow space 6 operates as an acoustic filter to interrupt the high frequency range. Thus, the sound pressure level of only the middle and high frequency range is widely decreased, interference between them and middle and high tones to be radiated from a speaker unit front face is eliminated and a speaker system without the nonuniformity of the sound pressure characteristic of the middle and high tones and without sound degradation can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224314A JP2707553B2 (en) | 1987-09-08 | 1987-09-08 | Speaker system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62224314A JP2707553B2 (en) | 1987-09-08 | 1987-09-08 | Speaker system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6468099A true JPS6468099A (en) | 1989-03-14 |
JP2707553B2 JP2707553B2 (en) | 1998-01-28 |
Family
ID=16811811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62224314A Expired - Lifetime JP2707553B2 (en) | 1987-09-08 | 1987-09-08 | Speaker system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2707553B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02246699A (en) * | 1989-03-20 | 1990-10-02 | Matsushita Electric Ind Co Ltd | Speaker system |
US5535284A (en) * | 1994-08-03 | 1996-07-09 | Thornhill; James A. | Woofer speaker and acoustically coupled sub-woofer speaker system |
US6002781A (en) * | 1993-02-24 | 1999-12-14 | Matsushita Electric Industrial Co., Ltd. | Speaker system |
WO2010074337A1 (en) * | 2008-12-24 | 2010-07-01 | 中道仁 | Speaker |
JP2011512108A (en) * | 2008-02-21 | 2011-04-14 | ボーズ・コーポレーション | Waveguide electroacoustic conversion |
WO2012090433A1 (en) * | 2010-12-28 | 2012-07-05 | Necカシオモバイルコミュニケーションズ株式会社 | Electroacoustic transducer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5587083U (en) * | 1978-12-08 | 1980-06-16 | ||
JPS5587084U (en) * | 1978-12-08 | 1980-06-16 | ||
JPS6036953U (en) * | 1983-08-19 | 1985-03-14 | 株式会社 クボタ | Control equipment for tent hoisting machines, etc. |
-
1987
- 1987-09-08 JP JP62224314A patent/JP2707553B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5587083U (en) * | 1978-12-08 | 1980-06-16 | ||
JPS5587084U (en) * | 1978-12-08 | 1980-06-16 | ||
JPS6036953U (en) * | 1983-08-19 | 1985-03-14 | 株式会社 クボタ | Control equipment for tent hoisting machines, etc. |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02246699A (en) * | 1989-03-20 | 1990-10-02 | Matsushita Electric Ind Co Ltd | Speaker system |
US6002781A (en) * | 1993-02-24 | 1999-12-14 | Matsushita Electric Industrial Co., Ltd. | Speaker system |
US5535284A (en) * | 1994-08-03 | 1996-07-09 | Thornhill; James A. | Woofer speaker and acoustically coupled sub-woofer speaker system |
JP2011512108A (en) * | 2008-02-21 | 2011-04-14 | ボーズ・コーポレーション | Waveguide electroacoustic conversion |
WO2010074337A1 (en) * | 2008-12-24 | 2010-07-01 | 中道仁 | Speaker |
WO2012090433A1 (en) * | 2010-12-28 | 2012-07-05 | Necカシオモバイルコミュニケーションズ株式会社 | Electroacoustic transducer |
US9247338B2 (en) | 2010-12-28 | 2016-01-26 | Nec Corporation | Electroacoustic transducer |
JP5910507B2 (en) * | 2010-12-28 | 2016-04-27 | 日本電気株式会社 | Electroacoustic transducer |
Also Published As
Publication number | Publication date |
---|---|
JP2707553B2 (en) | 1998-01-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |