GB1316771A - Sound reproducing system - Google Patents
Sound reproducing systemInfo
- Publication number
- GB1316771A GB1316771A GB2813070A GB2813070A GB1316771A GB 1316771 A GB1316771 A GB 1316771A GB 2813070 A GB2813070 A GB 2813070A GB 2813070 A GB2813070 A GB 2813070A GB 1316771 A GB1316771 A GB 1316771A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cabinet
- free piston
- loudspeaker
- free
- loud
- 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.)
- Expired
Links
- 239000012528 membrane Substances 0.000 abstract 3
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
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
1316771 Loud-speakers S YANDO 10 June 1970 [19 June 1969] 28130/70 Headings H4J and H4X A loud-speaker (diagrammatically represented by a disc 16) Fig. 1, is mounted in an air-tight cabinet 10 in which a free piston 13 is sealingly mounted by an elastic membrane 14. Sound emitted from the free piston 13 augments that emitted by the loud-speaker 16 over a predetermined low frequency range. There may be several free pistons and these may resonate at different frequencies. A substantially rigid shell (not shown), substantially encloses the cabinet 10, has an opening adjacent the loudspeaker 16 to radiate the acoustic output of the system, and acts to augment the power output of the system over the low frequency range. Preferably the enclosed volume of air in the cabinet 10 is substantially isobaric over the low frequency range. A moving coil loudspeaker is used. In an alternative arrangement, the loudspeaker 316 Fig. 6, is sealingly mounted on a movable piston 313 forming a front cabinet wall which is sealed to the remainder of the cabinet 310 by an elastic membrane 314. In addition, a portion of the rear wall 325 of the cabinet may also be sealed by an elastic membrane 326. The mass of free piston 325 is then substantially equal to that of free piston 313 plus the magnetic structure and frame of the loudspeaker 316. The cross-sectional area of free piston 325 is substantially equal to that of free piston 313. The momenta of the pistons is thus equal but oppositely directed, thereby creating a dynamic balance which leaves the body of cabinet 310 quiescent and free of objectionable vibrations- The pistons resonate with the elastic stiffness of the dynamic system at one and the same frequency. The sealed cabinet 310 has standoffs 327 and is within an outer shell 328.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84011769A | 1969-06-19 | 1969-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1316771A true GB1316771A (en) | 1973-05-16 |
Family
ID=25281493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2813070A Expired GB1316771A (en) | 1969-06-19 | 1970-06-10 | Sound reproducing system |
Country Status (4)
Country | Link |
---|---|
US (1) | US3727719A (en) |
CA (1) | CA929109A (en) |
DE (1) | DE2029073A1 (en) |
GB (1) | GB1316771A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5073430U (en) * | 1973-10-31 | 1975-06-27 | ||
JPS5092229U (en) * | 1973-12-24 | 1975-08-04 | ||
JPS50161225A (en) * | 1974-06-01 | 1975-12-27 | ||
JPS52100742U (en) * | 1976-01-28 | 1977-07-30 | ||
JPS5320931U (en) * | 1976-07-31 | 1978-02-22 | ||
JPS5492732U (en) * | 1977-12-14 | 1979-06-30 | ||
GB2245450A (en) * | 1990-06-19 | 1992-01-02 | Canon Kk | Speaker for use in a sound output system |
GB2256343A (en) * | 1991-05-29 | 1992-12-02 | Hughes Aircraft Co | High efficiency low frequency speaker system |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978941A (en) * | 1975-06-06 | 1976-09-07 | Curt August Siebert | Speaker enclosure |
US4142603A (en) * | 1976-11-22 | 1979-03-06 | Johnson Rubein V | Adjustable speaker cabinet |
US4231445A (en) * | 1978-12-04 | 1980-11-04 | Johnson Rubein V | Acoustic lens speaker cabinet |
DE3709700A1 (en) * | 1987-03-25 | 1988-10-13 | Meggl Friedemann | SPEAKER HOUSING |
US4949386A (en) * | 1988-05-23 | 1990-08-14 | Hill Amel L | Speaker system |
US6411720B1 (en) * | 1998-03-05 | 2002-06-25 | Eric K. Pritchard | Speaker systems with lower frequency of resonance |
JPH11331965A (en) * | 1998-05-15 | 1999-11-30 | Fujitsu Ltd | Information processor and speaker unit applicable to the processor |
US6430297B1 (en) * | 1998-09-28 | 2002-08-06 | Murata Manufacturing Co., Ltd. | Speaker and speaker device |
US6520282B1 (en) * | 2000-10-24 | 2003-02-18 | Nysora, Inc. | Sound enhancement mechanism for speaker sound system |
US6625292B2 (en) | 2001-11-15 | 2003-09-23 | Jl Audio, Inc. | Ported loudspeaker enclosure |
US6744902B2 (en) | 2001-11-15 | 2004-06-01 | Jl Audio, Inc. | Ported loudspeaker enclosure |
US7207413B2 (en) * | 2003-06-02 | 2007-04-24 | Tbi Audio Systems Llc | Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems |
CN1910951B (en) * | 2004-04-13 | 2012-04-11 | 松下电器产业株式会社 | Speaker device |
US8520866B2 (en) * | 2006-12-15 | 2013-08-27 | Nokia Corporation | Apparatus, method, and computer program product providing sound-produced tactile feedback |
TW200829053A (en) * | 2006-12-21 | 2008-07-01 | Global Target Entpr Inc | Thin-film type sound source output apparatus |
US8189841B2 (en) * | 2008-03-27 | 2012-05-29 | Bose Corporation | Acoustic passive radiating |
US8085968B2 (en) * | 2008-07-17 | 2011-12-27 | Bose Corporation | Resonating cone transducer |
US9020177B2 (en) * | 2011-09-30 | 2015-04-28 | Apple Inc. | Method and apparatus for construction of an acoustic module backvolume |
GB2497315A (en) * | 2011-12-06 | 2013-06-12 | B & W Group Ltd | Decoupled loudspeaker drive unit operated by magnet reaction force or recoil |
US8842868B1 (en) * | 2013-06-25 | 2014-09-23 | Jazz Hipster Corporation | Structure for passive radiation sound box |
US9226061B2 (en) * | 2013-08-28 | 2015-12-29 | Daniel T. Lilley, Jr. | Speaker assembly |
US9571934B2 (en) | 2014-03-26 | 2017-02-14 | Bose Corporation | Acoustic device with passive radiators |
GB201721127D0 (en) * | 2017-12-18 | 2018-01-31 | Pss Belgium Nv | Dipole loudspeaker for producing sound at bass frequencies |
CN209462592U (en) * | 2018-12-17 | 2019-10-01 | 歌尔科技有限公司 | Acoustic apparatus and electronic equipment |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2713396A (en) * | 1950-05-24 | 1955-07-19 | Ernest A Tavares | Novel, small, extended low frequency response, loudspeaker enclosure |
US3101810A (en) * | 1959-07-08 | 1963-08-27 | Allied Instructional Developme | Loudspeaker resonator |
US3240289A (en) * | 1963-10-25 | 1966-03-15 | Sony Corp | Sound system |
US3194340A (en) * | 1964-05-15 | 1965-07-13 | Kuwayama Zennosuke | Speaker enclosure system |
US3275100A (en) * | 1965-06-16 | 1966-09-27 | William S Dunning | Loudspeaker assembly having loudspeaker wholly supported by vibratory diaphragm |
-
1969
- 1969-06-19 US US00840117A patent/US3727719A/en not_active Expired - Lifetime
-
1970
- 1970-06-10 GB GB2813070A patent/GB1316771A/en not_active Expired
- 1970-06-10 CA CA085172A patent/CA929109A/en not_active Expired
- 1970-06-12 DE DE19702029073 patent/DE2029073A1/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5073430U (en) * | 1973-10-31 | 1975-06-27 | ||
JPS5611502Y2 (en) * | 1973-10-31 | 1981-03-16 | ||
JPS5092229U (en) * | 1973-12-24 | 1975-08-04 | ||
JPS5644147Y2 (en) * | 1973-12-24 | 1981-10-15 | ||
JPS50161225A (en) * | 1974-06-01 | 1975-12-27 | ||
JPS5613080B2 (en) * | 1974-06-01 | 1981-03-26 | ||
JPS52100742U (en) * | 1976-01-28 | 1977-07-30 | ||
JPS5320931U (en) * | 1976-07-31 | 1978-02-22 | ||
JPS5710149Y2 (en) * | 1976-07-31 | 1982-02-26 | ||
JPS5492732U (en) * | 1977-12-14 | 1979-06-30 | ||
GB2245450A (en) * | 1990-06-19 | 1992-01-02 | Canon Kk | Speaker for use in a sound output system |
GB2256343A (en) * | 1991-05-29 | 1992-12-02 | Hughes Aircraft Co | High efficiency low frequency speaker system |
Also Published As
Publication number | Publication date |
---|---|
DE2029073A1 (en) | 1971-01-21 |
US3727719A (en) | 1973-04-17 |
CA929109A (en) | 1973-06-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |