EP1829418A2 - Lautsprechermembran und verfahren zum herstellen einer lautsprechermembran - Google Patents
Lautsprechermembran und verfahren zum herstellen einer lautsprechermembranInfo
- Publication number
- EP1829418A2 EP1829418A2 EP05816954A EP05816954A EP1829418A2 EP 1829418 A2 EP1829418 A2 EP 1829418A2 EP 05816954 A EP05816954 A EP 05816954A EP 05816954 A EP05816954 A EP 05816954A EP 1829418 A2 EP1829418 A2 EP 1829418A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- edge region
- loudspeaker diaphragm
- loudspeaker
- diaphragm
- tapered edge
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
- H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
- H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
- H04R2440/01—Acoustic transducers using travelling bending waves to generate or detect sound
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/13—Application of wave-field synthesis in stereophonic audio systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4957—Sound device making
- Y10T29/49575—Sound device making including diaphragm or support therefor
Definitions
- the transformation of structure-borne noise into airborne sound has a similar effect to a filter in a signal chain. Specifically, only those signal components can be reproduced as airborne sound, which are previously generated as structure-borne noise in the plate.
- the body sound component which propagates in the form of the bending wave, is the most important.
- Substantial influence on the properties of the bending wave, in addition to excitation and material-related propagation, also wave reflections, as z. B. in Fig. 6B is shown in more detail. These wave reflections are caused by discontinuities (inhomogeneities) in the plate material, but in particular by abrupt plate ends or plate terminations, as shown in FIG. 6B is shown at the plate end 64.
- Returning or reflected wave portions 66 are superimposed with just excited, propagating wave portions 68 and cause, in addition to the formation of modes, in a broader sense, a change in the amplitude distribution. Furthermore, resonances occur on the membrane 62 in the form of standing waves.
- the tapered edge region can also completely surround the speaker membrane at the side. This has the advantage that not only on two sides of the speaker diaphragm, a standing wave is attenuated or prevented, but also transversely propagating standing waves are damped or prevented, resulting in a significant increase in the number of possibly to be damped by the edge region.
- a thickness of the tapered edge portion may be writable by a mathematical function based on the sine function. This allows an edge to be avoided at a transition between the acoustic surface and the absorption wedge region if the distance between the outer edge of the edge region and the transition between the acoustic surface and the absorption wedge region corresponds to a length of ⁇ / 4 (or a scaled version thereof) ,
- a speaker diaphragm as described in more detail above; and an exciter unit connected to the loudspeaker diaphragm, the exciter unit being further configured to vibrate the loudspeaker diaphragm in response to an electrical signal to produce an acoustic vibration corresponding to the electrical signal.
- the surface material should have a greater loss factor than the carrier material.
- special plastics which are applied, for example, as a thin polymer film. Good results can also be achieved if a liquid plastic is applied to the surface of the absorption wedge region 12.
- the surface structure of the carrier material changes, ie. H . of the absorption wedge region irreversible and thus forms, for example, the surface structure 16, as shown in FIG. 3B.
- such structuring still corresponds to the desired specifications. Accordingly, a method would also be conceivable which does not introduce a new material component into the construction, but merely relies on the change in the surface structure of the plate membrane 62, in particular in the absorption wedge area 12, as shown in FIG. 3B is shown.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Manufacturing & Machinery (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004061314A DE102004061314A1 (de) | 2004-12-20 | 2004-12-20 | Lautsprechermemebran und Verfahren zum Herstellen einer Lautsprechermembran |
| PCT/EP2005/013669 WO2006066850A2 (de) | 2004-12-20 | 2005-12-19 | Lautsprechermembran und verfahren zum herstellen einer lautsprechermembran |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1829418A2 true EP1829418A2 (de) | 2007-09-05 |
| EP1829418B1 EP1829418B1 (de) | 2017-08-30 |
Family
ID=36590382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05816954.1A Expired - Lifetime EP1829418B1 (de) | 2004-12-20 | 2005-12-19 | Lautsprechermembran und verfahren zum herstellen einer lautsprechermembran |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8107667B2 (de) |
| EP (1) | EP1829418B1 (de) |
| KR (1) | KR20070091145A (de) |
| CN (1) | CN101112118B (de) |
| DE (1) | DE102004061314A1 (de) |
| WO (1) | WO2006066850A2 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8340327B2 (en) * | 2009-06-11 | 2012-12-25 | Magna International Inc. | Home theater |
| DE102009036337B4 (de) * | 2009-08-06 | 2014-01-02 | Robert Bösnecker | Vorrichtung mit eingebetteter Membrane |
| WO2014153252A2 (en) * | 2013-03-14 | 2014-09-25 | Lewis Athanas | Acoustic transducer and method for driving same |
| DE202015101129U1 (de) * | 2015-03-06 | 2016-06-08 | LEGIS GbR (vertretungsberechtigter Gesellschafter: Thomas C.O. Schmidt, 10707 Berlin) | Flachmembran mit harzgfüllten Löchern, Planarlautsprecher mit Flachmembran und Akustikeinheit mit einem derartigen Planarlautsprecher |
| CN106023978B (zh) * | 2016-05-23 | 2019-08-02 | 南京航空航天大学 | 双层板声学黑洞减振降噪结构 |
| CN106023974B (zh) * | 2016-05-23 | 2019-10-22 | 南京航空航天大学 | 非完美声学黑洞截面构造 |
| CN106023979B (zh) * | 2016-05-23 | 2019-10-22 | 南京航空航天大学 | 局部共振声学黑洞结构 |
| CN108122551B (zh) * | 2017-12-20 | 2021-05-11 | 南京航空航天大学 | 一种声学黑洞振动吸收器 |
| CN110094452B (zh) * | 2018-01-30 | 2021-05-07 | 香港理工大学 | 利用声学黑洞特征的宽频带振动抑制装置 |
| WO2019238644A1 (en) * | 2018-06-11 | 2019-12-19 | Symphonova, Ltd | Resonating loudspeakers and related systems and methods |
| KR102192668B1 (ko) * | 2019-04-11 | 2020-12-17 | 한국과학기술원 | 두께와 폭이 함께 감소하는 음향 블랙홀 보 구조 |
| DE102021109134A1 (de) | 2021-04-13 | 2022-10-13 | Deutsche Institute Für Textil- Und Faserforschung Denkendorf | Biegewellenwandler |
| WO2023247017A1 (en) * | 2022-06-21 | 2023-12-28 | Huawei Technologies Co., Ltd. | Vibratory system comprising a vibratory panel with an acoustic black hole structure |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE623239A (de) * | 1961-10-04 | |||
| DE2112516B1 (de) * | 1971-03-16 | 1972-10-19 | Kurtze Guenther Dipl Phys Prof | Richtlautsprecher |
| US5143790A (en) | 1989-08-09 | 1992-09-01 | Westinghouse Electric Corp. | Integrally-damped steel composite laminated structure and method of attaching same |
| GB9818959D0 (en) | 1998-09-02 | 1998-10-21 | New Transducers Ltd | Panelform loudspeaker |
| WO1999002724A2 (en) | 1997-07-11 | 1999-01-21 | Mount Sinai Hospital Corporation | Methods for identifying genes expressed in selected lineages, and a novel genes identified using the methods |
| US6826285B2 (en) * | 2000-08-03 | 2004-11-30 | New Transducers Limited | Bending wave loudspeaker |
| GB0018996D0 (en) * | 2000-08-03 | 2000-09-20 | New Transducers Ltd | Bending wave loudspeaker |
| US6862361B2 (en) * | 2001-04-05 | 2005-03-01 | Floyd John James | Audio speaker |
-
2004
- 2004-12-20 DE DE102004061314A patent/DE102004061314A1/de not_active Ceased
-
2005
- 2005-12-19 WO PCT/EP2005/013669 patent/WO2006066850A2/de not_active Ceased
- 2005-12-19 EP EP05816954.1A patent/EP1829418B1/de not_active Expired - Lifetime
- 2005-12-19 CN CN200580047499.0A patent/CN101112118B/zh not_active Expired - Fee Related
- 2005-12-19 KR KR1020077013893A patent/KR20070091145A/ko not_active Ceased
-
2007
- 2007-06-20 US US11/765,966 patent/US8107667B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006066850A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US8107667B2 (en) | 2012-01-31 |
| EP1829418B1 (de) | 2017-08-30 |
| WO2006066850A2 (de) | 2006-06-29 |
| KR20070091145A (ko) | 2007-09-07 |
| CN101112118A (zh) | 2008-01-23 |
| CN101112118B (zh) | 2012-12-05 |
| DE102004061314A1 (de) | 2006-07-06 |
| WO2006066850A3 (de) | 2007-02-22 |
| US20080089549A1 (en) | 2008-04-17 |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SPORER, THOMAS Inventor name: BEER, DANIEL Inventor name: KUSTER, MARTIN Inventor name: GENSICKE, HEINZ Inventor name: BRIX, SANDRA |
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| DAX | Request for extension of the european patent (deleted) | ||
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