CN1255277A - Panel-form loudspeakers - Google Patents
Panel-form loudspeakers Download PDFInfo
- Publication number
- CN1255277A CN1255277A CN98804923A CN98804923A CN1255277A CN 1255277 A CN1255277 A CN 1255277A CN 98804923 A CN98804923 A CN 98804923A CN 98804923 A CN98804923 A CN 98804923A CN 1255277 A CN1255277 A CN 1255277A
- Authority
- CN
- China
- Prior art keywords
- panel
- plate
- driver
- platelet
- form loudspeakers
- 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
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
A panel-form loudspeaker comprises at least two resonant distributed mode acoustic panels with a single driver provided to excite all the panels such that bending wave energy is efficiently transferred to each of them to excite distributed mode resonance in them to provide acoustic output. There may be two panels one larger than the other. The larger having a lower bending wave stiffness than the smaller. The smaller panel is positioned eccentrically of the larger and the driver eccentrically of the smaller panel. A plurality of smaller panels may be associated with a single larger panel. One embodiment provides a driver mounted to the or each smaller panel which is adhesively attached face to face to the larger panel. Another embodiment provides the or each smaller panel formed within and attached to the larger panel, a driver being attached to the or each smaller panel. The attachment of the panels uses a material forming a controlling compliant coupling. A third embodiment provides the or each smaller panel mounted on one end of an associated coupler passing through and attached to the larger panel, a driver being attached to the other end of the or each coupler. The attachment of the or each coupler to the larger panel uses a material forming a controlling compliance coupling. The or each coupler is tubular in section.
Description
Invention field
The present invention is about a kind of panel-form loudspeakers, especially but not exclusively, and about applicant's international application WO 97/09842 described the sort of panel-form loudspeakers, promptly so-called distributed mode loudspeaker.
Background technology
By existing suitable material, a distributed mode loudspeaker can cover the whole audiorange in the single plate in theory.Because present state of arts can be got rid of the possibility of this solution on material science and technology, so applicant's international application WO/9709846 is designed to little distributed mode loudspeaker plate is suspended in the big distributed mode loudspeaker plate that hangs down cut-off frequency to produce the bigger loud speaker of a kind of audio bandwidth.This design needs the driver of at least two suitable types, and needs the mechanical interface between careful design two plates.
Because of two plates all can cover wider frequency range by ability separately, so the output meeting of two plates is overlapping in a wide frequency ranges.Therefore expect to have an Active crossover network, though can reduce tonequality and increase manufacturing cost.
The object of the present invention is to provide a kind of device that alleviates or overcome these difficulties.The solution of the present invention
According to a scheme, the invention provides a kind of panel-form loudspeakers, comprise the sound plate of at least two resonance distribution patterns, wherein only provide a driver to encourage all plates, transmit the bending wave energy effectively to each plate, and then audio frequency output is provided.
Two plates are preferably arranged, and one of them plate is greater than another plate.
It is low that the bending wave rigidity of big plate cans be compared to platelet most.
Platelet preferably is provided with respect to big plate is eccentric.
Driver preferably is provided with respect to platelet is eccentric.
In one embodiment, a big plate disposes a plurality of platelets.
Preferably, driver is installed on this or each platelet, and platelet is connected on the big plate, and the crooked wave energy of being come by each driver and the platelet that links thereof is sent on the big plate effectively.
Platelet and big plate preferably are linked together face-to-face, and these plates can be fixed together by the binding agent of low mechanical loss.
In another embodiment, platelet is formed in the big plate and with big plate and connects, and driver is installed on the platelet.
The connection of large and small plate can be realized by the material that forms controlled submissive connection (controlling compliant coupling).
In yet another embodiment, platelet is installed in by being connected on the end that connects coupling on the big plate, and driver is connected on the described coupling.
Driver preferably is installed on the other end of described coupling.
Coupling preferably utilizes the material that forms controlled submissive connection with connecting of big plate.
Coupling is preferably tubular sections.
Brief description of drawings
Such scheme of the present invention, feature and advantage by with reference to accompanying drawing to the explanation of the embodiment of the invention and clearer, wherein:
Figure 1A and 1B are respectively the rearview and the end view of first embodiment of the invention panel-form loudspeakers;
The cutaway view of Fig. 2 second embodiment of the invention panel-form loudspeakers;
The cutaway view of Fig. 3 second embodiment of the invention panel-form loudspeakers; And
The rearview of the modified version of loud speaker shown in Fig. 4 Fig. 1 to 3.
Most preferred embodiment of the present invention
Fig. 1 shows the little distributed mode loudspeaker plate 10 that is encouraged by a proper driver or exciter 12, and the best is a dynamic speaker, to obtain bigger bandwidth.Platelet 10 is connected in the big distributed mode loudspeaker plate 14 that rigidity is suitably low, size can cover required low-frequency range Face to face.By selecting correct material and design of Driver to demonstrate, it can continue to produce when driving platelet 10 dedicated bandwidth, and this has dedicated bandwidth to be superimposed on can provide in the low frequency output of bigger plate 14 outputs of wide bandwidth.
By the suitable binding agent that applies low mechanical loss little distributed mode loudspeaker plate is attached on the big plate, so that good high frequency conveying capacity is kept in effective transmission of mechanical energy when keeping low frequency with low-loss simultaneously.Epoxide-resin glue promptly is applicable to this purpose.Can be attached to the appropriate location of big plate 14 according to the selected platelet 10 of distribution pattern principle illustrated in applicant's international application WO/97/09842, it is also selected like this that exciter 12 is attached to the position of platelet 10.
Fig. 2 illustrates that another implements panel-form loudspeakers of the present invention, and wherein bigger low frequency is optimized distribution pattern plate 20 and carried out modification, is formed with less high frequency and optimizes plate 22 in the zone of driver 24.But the common drive point of driver 24 is represented the two parts or two zones of drive plate.For example make 26 hardening of local surfaces floor district extraly, the less HFS or the zone of plate can be provided by carbon fiber, glass fibre or the similar high strength material that increases combination.In addition, can also be by increasing the new high superficial layer portion of rigidity in this zone.According to the wave propagation characteristic of big plate 20, can obtain the natural equilibrium that power with frequency is distributed.Can comprise a suitable submissive border 28 in addition so that between the high frequency of plate and low frequency part, distinguished.This resilient connection can be determined to help the damping of boundary between control board two parts simultaneously by part-frequency point to the control of the submissive damping that depends on frequency desirable from machinery or best.
Fig. 3 shows and implements a panel-form loudspeakers more of the present invention.In the structure of Fig. 3, less high frequency plate 30 cements on the end of lightweight tubulose coupling 32.Coupling is by bigger low frequency plate 34 and flexiblely be connected in the position shown in the label 36 on the plate.The coupling resilient connection can play the effect of filter frequently of mechanical low pass to big plate 34, further to define two plates 30 and 34 s' energy balance.As can be seen, the other end of the coupling 32 that separates with high frequency plate 30 is fixed on the exciter 38 of driver.
Fig. 4 shows and implements another structure of the present invention, and wherein single big resonance distribution pattern sound plate 50 is furnished with a plurality of platelets 52, and each platelet 52 is furnished with a driver 54.Platelet 52 can connect with big plate 50 according to the described mode of Fig. 1 to 3.That is to say that platelet 52 cements on the big plate 50 face-to-face, above general's driver separately is installed in then.In addition, platelet 52 can comprise a plurality of parts of suitably strengthening and being provided with single driver 54 on the big plate 50, and reinforced portion 52 is attached on the big plate according to the described mode of Fig. 2.At last, platelet 52 can also comprise the plate that is carried by coupling, and each plate is to connect with single driver according to the described mode of Fig. 3.Before needing to resemble, the platelet 52 that is appreciated that Fig. 4 structure do not connect with plate 50 greatly.Some plate connects by the described mode of Fig. 1, and other plates then connect by Fig. 2 and/or 3 described modes.
In described embodiment, driver all connects in all cases or is fixed on the platelet.It will be appreciated, of course, that if desired and driver can be connected or be fixed on the big plate.
The applicability of industry
The advantage that above-mentioned distributed mode loudspeaker has is to utilize the whole voiced band of each loudspeaker Wide, reduce required number of drives, thereby lowered cost and the complexity of loudspeaker.
Can be applicable to the automobile publicity according to loudspeaker of the present invention, its advantage is reducing component count, because of And obtain than high-reliability, need not the Active crossover assembly, and reduced manufacturing cost.
Claims (15)
1. panel-form loudspeakers comprises it is characterized in that the sound plate of at least two resonance distribution patterns, only provide a driver to encourage all plates, transmit the bending wave energy effectively to each plate, the resonance of the distribution pattern in the excitation plate, and then audio frequency output is provided.
2. panel-form loudspeakers as claimed in claim 1 is characterized in that, two plates are arranged, and one of them plate is greater than another plate.
3. panel-form loudspeakers as claimed in claim 2 is characterized in that, the bending wave ratio of rigidity platelet of big plate is low.
4. as the panel-form loudspeakers of claim 2 or 3, it is characterized in that platelet is provided with respect to big plate is eccentric.
5. as each panel-form loudspeakers of claim 2-4, it is characterized in that driver is with respect to the eccentric setting of platelet.
6. as each panel-form loudspeakers of claim 2-5, it is characterized in that a big plate is furnished with a plurality of platelets.
7. as each panel-form loudspeakers of claim 2-6, it is characterized in that driver is installed on each platelet, platelet is connected on the big plate, and the crooked wave energy of being come by each driver and the platelet that links thereof is sent on the big plate effectively.
8. panel-form loudspeakers as claimed in claim 7 is characterized in that, platelet and big plate are linked together face-to-face.
9. as the panel-form loudspeakers of claim 7 or 8, it is characterized in that these plates are fixed together by the binding agent of low mechanical loss.
10. as each panel-form loudspeakers of claim 2-6, it is characterized in that platelet is formed in the big plate and with big plate and connects, driver is installed on the platelet.
11. the panel-form loudspeakers as claim 10 is characterized in that, the connection of large and small plate is realized by the material that forms controlled submissive connection.
12. as each panel-form loudspeakers of claim 2-6, it is characterized in that platelet is installed in by being connected on the end that connects coupling on the big plate, driver is connected on the described coupling.
13. the panel-form loudspeakers as claim 12 is characterized in that, driver is installed on the other end of described coupling.
14. the panel-form loudspeakers as claim 12 or 13 is characterized in that, the material that connects utilization-controlled submissive connection of formation of coupling and big plate.
15., it is characterized in that coupling is a tubular sections as each panel-form loudspeakers of claim 12-14.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9709959.2A GB9709959D0 (en) | 1997-05-15 | 1997-05-15 | Panel-form loudspeakers |
| GB9709959.2 | 1997-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1255277A true CN1255277A (en) | 2000-05-31 |
Family
ID=10812418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98804923A Pending CN1255277A (en) | 1997-05-15 | 1998-05-13 | Panel-form loudspeakers |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP0981928A2 (en) |
| JP (1) | JP2002505814A (en) |
| KR (1) | KR20010012527A (en) |
| CN (1) | CN1255277A (en) |
| AR (1) | AR012696A1 (en) |
| AU (1) | AU746673B2 (en) |
| BR (1) | BR9809642A (en) |
| CA (1) | CA2290476A1 (en) |
| CO (1) | CO4780081A1 (en) |
| GB (1) | GB9709959D0 (en) |
| ID (1) | ID20339A (en) |
| IL (1) | IL132686A0 (en) |
| TW (1) | TW444510B (en) |
| WO (1) | WO1998052381A2 (en) |
| ZA (1) | ZA983986B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930910B (en) * | 2004-03-11 | 2012-09-05 | 新型转换器有限公司 | Loudspeakers |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0969691B1 (en) * | 1998-01-16 | 2012-06-13 | Sony Corporation | Speaker and electronic apparatus using speaker |
| ATE303051T1 (en) | 1998-06-22 | 2005-09-15 | Slab Technology Ltd | SPEAKER |
| GB9826164D0 (en) * | 1998-11-30 | 1999-01-20 | New Transducers Ltd | Acoustic devices |
| GB9901895D0 (en) * | 1999-01-29 | 1999-03-17 | New Transducers Ltd | Loudspeakers |
| US6676879B1 (en) | 1999-01-29 | 2004-01-13 | New Transducers Limited | Method of making vehicle interior trim panel with integral loudspeaker |
| GB9905373D0 (en) * | 1999-03-10 | 1999-05-05 | New Transducers Ltd | Inertial vibration exciters |
| GB9915361D0 (en) * | 1999-07-02 | 1999-09-01 | New Transducers Ltd | Acoustic device |
| GB0007025D0 (en) * | 2000-03-23 | 2000-05-10 | New Transducers Ltd | Loudspeakers |
| US7372968B2 (en) | 2000-11-08 | 2008-05-13 | New Transducers Limited | Loudspeaker driver |
| GB0102865D0 (en) | 2001-02-06 | 2001-03-21 | Secr Defence Brit | Panel form loudspeaker |
| CN1500364A (en) * | 2001-04-05 | 2004-05-26 | 新型转换器有限公司 | Loudspeaker |
| US7245729B2 (en) | 2001-04-05 | 2007-07-17 | New Transducers Limited | Loudspeaker |
| US7548854B2 (en) | 2002-01-31 | 2009-06-16 | Awi Licensing Company | Architectural sound enhancement with pre-filtered masking sound |
| GB2386026B (en) * | 2002-02-28 | 2005-06-08 | 1 Ltd | Loudspeaker |
| US6983819B2 (en) | 2002-04-02 | 2006-01-10 | Awi Licensing Company | Entertainment sound panels |
| EP1480489A3 (en) | 2003-05-23 | 2009-07-01 | Alps Electric Co., Ltd. | Exciting device for producing sound |
| US10158337B2 (en) | 2004-08-10 | 2018-12-18 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US10848118B2 (en) | 2004-08-10 | 2020-11-24 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US11431312B2 (en) | 2004-08-10 | 2022-08-30 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US8284955B2 (en) | 2006-02-07 | 2012-10-09 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| JP2006121325A (en) * | 2004-10-20 | 2006-05-11 | Authentic Ltd | Panel-type speaker |
| JP2007116422A (en) | 2005-10-20 | 2007-05-10 | Sony Corp | Audio output device and method |
| US8204266B2 (en) | 2005-10-21 | 2012-06-19 | Sfx Technologies Limited | Audio devices |
| US11202161B2 (en) | 2006-02-07 | 2021-12-14 | Bongiovi Acoustics Llc | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
| US10701505B2 (en) | 2006-02-07 | 2020-06-30 | Bongiovi Acoustics Llc. | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
| US10848867B2 (en) | 2006-02-07 | 2020-11-24 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US9615189B2 (en) | 2014-08-08 | 2017-04-04 | Bongiovi Acoustics Llc | Artificial ear apparatus and associated methods for generating a head related audio transfer function |
| US10069471B2 (en) | 2006-02-07 | 2018-09-04 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US9264004B2 (en) | 2013-06-12 | 2016-02-16 | Bongiovi Acoustics Llc | System and method for narrow bandwidth digital signal processing |
| US9883318B2 (en) | 2013-06-12 | 2018-01-30 | Bongiovi Acoustics Llc | System and method for stereo field enhancement in two-channel audio systems |
| US9906858B2 (en) | 2013-10-22 | 2018-02-27 | Bongiovi Acoustics Llc | System and method for digital signal processing |
| US10820883B2 (en) | 2014-04-16 | 2020-11-03 | Bongiovi Acoustics Llc | Noise reduction assembly for auscultation of a body |
| US9615813B2 (en) | 2014-04-16 | 2017-04-11 | Bongiovi Acoustics Llc. | Device for wide-band auscultation |
| US10639000B2 (en) | 2014-04-16 | 2020-05-05 | Bongiovi Acoustics Llc | Device for wide-band auscultation |
| US9564146B2 (en) | 2014-08-01 | 2017-02-07 | Bongiovi Acoustics Llc | System and method for digital signal processing in deep diving environment |
| US9638672B2 (en) | 2015-03-06 | 2017-05-02 | Bongiovi Acoustics Llc | System and method for acquiring acoustic information from a resonating body |
| GB2539029B (en) * | 2015-06-04 | 2017-06-07 | Amina Tech Ltd | Distributed mode loudspeaker damping oscillations within exciter feet |
| US9621994B1 (en) | 2015-11-16 | 2017-04-11 | Bongiovi Acoustics Llc | Surface acoustic transducer |
| US9906867B2 (en) | 2015-11-16 | 2018-02-27 | Bongiovi Acoustics Llc | Surface acoustic transducer |
| AU2019252524A1 (en) | 2018-04-11 | 2020-11-05 | Bongiovi Acoustics Llc | Audio enhanced hearing protection system |
| WO2020028833A1 (en) | 2018-08-02 | 2020-02-06 | Bongiovi Acoustics Llc | System, method, and apparatus for generating and digitally processing a head related audio transfer function |
| KR102252696B1 (en) | 2019-10-21 | 2021-05-17 | 삼원액트 주식회사 | Panel with sound reproduction |
| KR102215716B1 (en) | 2019-10-21 | 2021-02-18 | 삼원액트 주식회사 | Panel with sound reproduction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS588000A (en) * | 1981-07-06 | 1983-01-17 | Murata Mfg Co Ltd | Piezoelectric speaker |
| US4751419A (en) * | 1986-12-10 | 1988-06-14 | Nitto Incorporated | Piezoelectric oscillation assembly including several individual piezoelectric oscillation devices having a common oscillation plate member |
| WO1992003024A1 (en) * | 1990-08-04 | 1992-02-20 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Panel-form loudspeaker |
| JPH11512257A (en) * | 1995-09-02 | 1999-10-19 | ニュー トランスデューサーズ リミテッド | Panel loudspeaker |
-
1997
- 1997-05-15 GB GBGB9709959.2A patent/GB9709959D0/en active Pending
-
1998
- 1998-05-12 ZA ZA983986A patent/ZA983986B/en unknown
- 1998-05-13 AU AU74390/98A patent/AU746673B2/en not_active Ceased
- 1998-05-13 BR BR9809642-7A patent/BR9809642A/en not_active IP Right Cessation
- 1998-05-13 JP JP54892498A patent/JP2002505814A/en active Pending
- 1998-05-13 CA CA002290476A patent/CA2290476A1/en not_active Abandoned
- 1998-05-13 EP EP98921596A patent/EP0981928A2/en not_active Withdrawn
- 1998-05-13 IL IL13268698A patent/IL132686A0/en unknown
- 1998-05-13 KR KR1019997010482A patent/KR20010012527A/en not_active Application Discontinuation
- 1998-05-13 CN CN98804923A patent/CN1255277A/en active Pending
- 1998-05-13 WO PCT/GB1998/001362 patent/WO1998052381A2/en not_active Application Discontinuation
- 1998-05-14 AR ARP980102243A patent/AR012696A1/en unknown
- 1998-05-15 TW TW087107535A patent/TW444510B/en not_active IP Right Cessation
- 1998-05-15 ID IDP980712A patent/ID20339A/en unknown
- 1998-05-15 CO CO98027492A patent/CO4780081A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930910B (en) * | 2004-03-11 | 2012-09-05 | 新型转换器有限公司 | Loudspeakers |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9809642A (en) | 2000-07-11 |
| GB9709959D0 (en) | 1997-07-09 |
| WO1998052381A3 (en) | 1999-02-18 |
| AU746673B2 (en) | 2002-05-02 |
| IL132686A0 (en) | 2001-03-19 |
| TW444510B (en) | 2001-07-01 |
| ID20339A (en) | 1998-11-26 |
| KR20010012527A (en) | 2001-02-15 |
| JP2002505814A (en) | 2002-02-19 |
| CA2290476A1 (en) | 1998-11-19 |
| ZA983986B (en) | 1999-02-19 |
| AR012696A1 (en) | 2000-11-08 |
| AU7439098A (en) | 1998-12-08 |
| EP0981928A2 (en) | 2000-03-01 |
| WO1998052381A2 (en) | 1998-11-19 |
| CO4780081A1 (en) | 1999-05-26 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |