EP3205117A1 - Lautsprecherarray - Google Patents
LautsprecherarrayInfo
- Publication number
- EP3205117A1 EP3205117A1 EP15777936.4A EP15777936A EP3205117A1 EP 3205117 A1 EP3205117 A1 EP 3205117A1 EP 15777936 A EP15777936 A EP 15777936A EP 3205117 A1 EP3205117 A1 EP 3205117A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- baffle
- loudspeaker array
- recesses
- encapsulated
- sound
- 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.)
- Ceased
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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
- H04R2201/029—Manufacturing aspects of enclosures transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
- H04R2201/401—2D or 3D arrays of transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
- H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
- H04R2201/403—Linear arrays of transducers
Definitions
- Embodiments of the present invention relate to a loudspeaker array with an enclosed baffle and a plurality of sound transducers and to a manufacturing method thereof.
- Speaker arrays may e.g. be arranged as a line or area arrays.
- Speaker arrays are playing an increasingly important role in different sounding scenarios.
- An important advantage over conventional loudspeakers lies in the possibility of influencing the emission characteristic of the loudspeaker array by an individual control of each individual sound transducer.
- loudspeaker arrays are complex and often only with great material and installation costs to realize.
- the backward sound of the array must be isolated from the forward radiated sound. This is done by installing the speaker array in a, e.g. closed, housing.
- the individual control of the individual loudspeakers in the array requires, depending on the application, a separate, e.g. Airtight separated, individual housing per transducer, to avoid interference of adjacent transducers by the rear sound pressure inside the housing.
- the housing of a loudspeaker array therefore has to be subdivided into so-called chambers in order to allow each individual converter its own, closed housing volume.
- the object of the present invention is to provide a simple construction of a loudspeaker enclosure for a loudspeaker array as well as a simplified manufacturing method for a loudspeaker array. The object is solved by the independent claims.
- a first embodiment provides a loudspeaker array having an enclosed baffle and a plurality of sound transducers.
- the encapsulated baffle has a multiplicity of recesses arranged side by side on a first main surface.
- Each transducer of the plurality of sound transducers is arranged in the associated recess of the plurality of recesses that an encapsulated back volume for each transducer is formed by each recess.
- the core of the invention thus lies in the fact that instead of a loudspeaker housing having a plurality of chambers, an encapsulated baffle with a plurality of recesses is used.
- the encapsulated baffle is in principle a planar element with an increased thickness, so that in this directly recesses or chambers can be formed, which form the return volumes after insertion of the sound transducer in the recesses.
- a simple speaker construction can be produced, which is arbitrarily scalable both as a line array and area array.
- the recesses are blind holes, e.g. shaped as drilled or milled blind holes, which are then e.g. may have a round, but also an oval or even angular shape.
- the ratio between width and depth of the recess is in the range of 5: 1 to 1: 5, 3: 1 to 1: 3 or in the range of 2: 1 to 1: 2.
- the encapsulated baffle is designed as a sandwich construction with a plurality of (bonded or generally connected) layers.
- the one or more front layers (see first main surface) to comprise a multiplicity of through holes for the recesses, while the last layer forms a rear wall which closes off the recesses so that again blind holes are formed are.
- the encapsulated baffle comprises at least one sound guide, for example in the form of a horn, a bass reflex channel or a transmission channel.
- the encapsulated baffle can also have a conductor layer with conductor tracks for electrical contacting of the sound transducer. The arrangement thereof varies depending on the choice of material for the baffle.
- a further exemplary embodiment provides a method for producing a speaker array.
- the method comprises the two basic steps of providing a plurality of juxtaposed recesses in a first major surface of an enclosed baffle and arranging a plurality of sound transducers in the associated recesses so as to form the return volumes for the sound transducers therethrough.
- the speaker is a total of very simple and therefore inexpensive to produce.
- the step of providing the plurality of juxtaposed recesses may be accomplished either by inserting the recesses by milling or drilling into a support plate, or by direct prototyping, e.g. by casting or injection molding, in one process step. All mentioned production methods offer the advantage that a simple and fast production is possible both from one part and from several parts, whereby due to the low complexity of the production or at least the housing production can also be done fully automatically.
- 1a is a schematic 3D representation of a line-shaped loudspeaker array according to a first
- FIG. 3b is a schematic sectional view of a loudspeaker array with an encapsulated baffle as a sandwich construction and attached rear wall according to a further embodiment; and FIG. 3c shows a schematic sectional representation of a loudspeaker array with additional drive electronics according to an additional exemplary embodiment.
- the linear loudspeaker array comprises an elongated, encapsulated baffle 12 with a total of six sound transducers 16a to 16f arranged in series.
- the encapsulated baffle 12 is e.g. made of wood or aluminum or other housing material with a sufficient wall thickness, so that 1x6 recesses 14a to 14f can be introduced into this.
- the recesses 14a to 14f are provided as side-by-side blind holes and also arranged in series corresponding to the sound transducers 16a to 16f. For the sake of completeness, it should be noted that all the recesses 14a to 14f are arranged on the same main surface 12a of the encapsulated baffle 12.
- the plurality of sound transducers 16a to 16f arranged in the corresponding recesses 14a to 14f.
- the recess 14a to 14f for example, by milling or drilling blind holes in the support plate 12 or directly by injection molding can be produced.
- an encapsulated rear volume for the corresponding sound transducer 16a to 16f is formed by the recess 14a to 14f, which is also designated here by reference numerals 14a to 14f for reasons of clarity.
- the variety the return volumes 14a to 14f for the plurality of sound transducers 16a to 16f are separated from each other and may also be referred to as acoustically decoupled.
- the return volumes 14a to 14f form so-called individual housings directly in the housing material 12, wherein the individual housings are separated from one another such that they can not be influenced by the rearward sound.
- the volumes 14a to 14f are approximately equal in size. Another advantage is the high strength of a housing 12 thus produced and the high internal damping due to the perforated plate structure, which is similar to a honeycomb core, for example.
- the plurality of sound transducers 16a to 16f are preferably, but not necessarily, designed as type-identical sound transducers, so that an array is formed by the arrangement.
- the sound can be radiated directed by the array 10, wherein the direction can be varied via the control of the sound transducer 16a to 16f.
- An embodiment with variable housing volume is shown in Fig. 1 b.
- FIG. 1b shows a loudspeaker array 10 'with the six sound transducers 16a to 16f, which are arranged in the encapsulated baffle 12'.
- the recesses 14a to 14e correspond to the recesses 14a to 4e of Fig. 1a, while the recess 14f is reduced in size.
- the recesses 14a to 14e extend almost over the entire thickness of the encapsulated baffle 12 '.
- the ratio of depth to width is approx. 1: 1, 5.
- the recess 14 ⁇ has a reduced depth and thus a reduced encapsulated back volume, wherein the ratio between depth to width is approximately 1: 2.
- the sound transducer 16f has a changed characteristic due to the reduced, encapsulated return volume 14f.
- the bore spacing between the 1xn recesses 14a to 14f is approximately constant.
- the depth of the blind hole 14 f is also varied, the diameter or width of the recess 14 f, in order to produce a changed characteristic.
- the diameter or broadening of the recess 14f is typically another transducer 16f used due to the changed dimensions.
- a conical bore can be used, so that the transducer opening continues to fit the sound transducer 16f.
- FIG. 2 shows a flat loudspeaker array 10 ", which comprises a flat, encapsulated baffle 12" in which 4x4 recesses 14a to 14p are inserted, which serve as return volumes 14a to 14p for the sound transducers 16a to 16p.
- both the cutouts 14a to 14p and the sound transducers 16a to 16p are arranged as a 4x4 matrix or, in general, the bore spacing between the individual cutouts 14a to 14p in both the X and Y matrices.
- Direction is the same.
- FIGS. 3 a to 3 c With reference to FIGS. 3 a to 3 c, the partial variants for the planar loudspeaker array 10 "from FIG. 2 and the linear loudspeaker array 10 or 10 'from FIG. 1 a and 1 b are explained.
- FIG. 3a shows an encapsulated baffle 12 "'designed as a sandwich construction, in which the encapsulated baffle comprises a first front layer 12a'", which forms the main surface for the arrangement of the loudspeakers 16a to 16c, and a second rear wall.
- Layer 12b ' Optionally, an intermediate layer 12c'" may be provided between the layers 12a '"and 12b'".
- the recesses 14a to 14c are formed in the same sandwich comprising the three layers 12a '', 12b '' and 12c '' '.
- the intermediate layer 12c '" may comprise one or more tracks for electrically contacting the speakers 16a to 16c .
- This electrical contact is exemplified by the contacts 18 for the speaker 16a which contact the voice coil for the diaphragm of the loudspeaker
- the loudspeaker signal or a part thereof can also be realized via these layers, so that it would be conceivable that a conductive layer 12a '' and 12b '' form the ground contact for the transducers 6a to 16c.
- Fig. 3b shows another encapsulated baffle 12 "", which is also designed as a sandwich construction.
- the sandwich construction comprises a front layer 12a "" having a plurality of through holes (also referred to as a perforated plate) and a back layer 12b "forming the back wall and thus having no recess the perforated plate 12a "” through the plurality of through holes after mating with the rear wall 12b "then the housing volumes 14a to 14c are formed.
- a front layer 12a "" having a plurality of through holes (also referred to as a perforated plate) and a back layer 12b "forming the back wall and thus having no recess the perforated plate 12a "” through the plurality of through holes after mating with the rear wall 12b "then the housing volumes 14a to 14c are formed.
- Such a construction is improved in terms of clearance, since through-holes are very easy to produce compared to blind bores.
- FIG. 3c shows a further encapsulated baffle 12 "" 'with the recesses 14a and 14b designed as a blind hole.
- a control electronics 20 for the speakers 16a and 16b is provided here on the first main surface.
- the control electronics 20 may be designed, for example, to coordinate the individual control of the plurality of sound transducers of the array.
- the baffle may include or have integrated a so-called cooling layer, which in places realized the possibly required heat dissipation (cooling surface).
- the control electronics 20 is connected via wires, illustrated here by way of example with reference to the contact wires 18 for the loudspeaker 16a, with the transducers 16a and 16b. Alternatively, it would also be conceivable that the connection by means of strip conductors, as explained with reference to FIG. 3a, is executed. It should be noted that it is independent for this embodiment, whether the encapsulated baffle 12 "" 'is designed as a sandwich construction or in one piece.
- the sound transducers 16a to 16e used are classic reciprocating sound transducers with membrane and voice coil, but also electrostatic transducers or miniature loudspeakers, such as e.g. MEMS speakers.
- so-called sound guides such as horns, bass reflex channels or transmission line channels can be incorporated into the carrier material of the encapsulated baffle.
- the encapsulated baffle may have trenches for the cabling of the individual speakers instead of wiring layers or in addition to wiring layers.
- the wiring layer 12c '' need not necessarily be an intermediate layer but may be disposed on the first main surface or another main surface '"is not only used in conjunction with sandwich constructions.
- control electronics 20 can also be arranged on the second opposite main surface (ie on the rear side) or can also be inserted flush into a further recess.
- the element sometimes referred to as a "blind hole” above, constitutes a recess in the sense of a cavity or dent and is defined by the fact that, viewed from the frontal plane, an opening extends into the baffle which is closed inside the baffle a blind hole is also understood to mean a shape (for example produced by deep-drawing a plastic plate) which is bulged so that the volumes protrude beyond the plate thickness, whereby on the one hand any shape of the blind hole (round, angular or free-shaped) and on the other hand any hole profile in the depth,
- a person skilled in the art under an encapsulated housing has both a closed housing and a housing with a resonator, eg in the sense of a Helmholtz resonator, ie
- FIG. 1 For exemplary embodiments, relate to a production method for the loudspeaker array.
- This comprises in the basic variant the steps “providing a plurality of juxtaposed recesses in a first main surface of the baffle” and “arranging a plurality of sound transducers in the corresponding recesses of the plurality of recesses” so that through the recesses the return volumes for the encapsulated Baffle are formed.
- the first step of providing the plurality of exceptions may be mung either by milling, drilling or general machining done.
- the recesses could also be introduced into the solid material by other material removal methods (eg by energy beams) or chemically.
- the encapsulated baffle it would also be conceivable for the encapsulated baffle to be produced directly with the recesses, for example as a deep-drawn product or as a cast-molded or injection-molded product.
- circuit boards on board (loudspeaker housing milled directly into the multilayer board) are illustrative only, while the scope of protection is defined by the following claims.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Manufacturing & Machinery (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014220544.1A DE102014220544A1 (de) | 2014-10-09 | 2014-10-09 | Lautsprecherarray |
| PCT/EP2015/073255 WO2016055567A1 (de) | 2014-10-09 | 2015-10-08 | Lautsprecherarray |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3205117A1 true EP3205117A1 (de) | 2017-08-16 |
Family
ID=54288793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15777936.4A Ceased EP3205117A1 (de) | 2014-10-09 | 2015-10-08 | Lautsprecherarray |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10149045B2 (de) |
| EP (1) | EP3205117A1 (de) |
| JP (1) | JP6564855B2 (de) |
| CN (1) | CN107005755B (de) |
| DE (1) | DE102014220544A1 (de) |
| WO (1) | WO2016055567A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11153690B2 (en) * | 2018-08-22 | 2021-10-19 | Dsp Group Ltd. | Electrostatic speaker and a method for generating acoustic signals |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2451908A (en) * | 2007-08-17 | 2009-02-18 | Wolfson Microelectronics Plc | MEMS microphone package |
| CN201718025U (zh) * | 2010-08-03 | 2011-01-19 | 山东共达电声股份有限公司 | 微型扬声器阵列模组 |
| US20120008294A1 (en) * | 2010-07-08 | 2012-01-12 | Jahan Minoo | Printed circuit boards with embedded components |
| DE102011004577A1 (de) * | 2011-02-23 | 2012-08-23 | Robert Bosch Gmbh | Bauelementträger und Bauteil mit einem MEMS-Bauelement auf einem solchen Bauelementträger |
| DE102011086722A1 (de) * | 2011-11-21 | 2013-05-23 | Robert Bosch Gmbh | Mikromechanische Funktionsvorrichtung, insbesondere Lautsprechervorrichtung, und entsprechendes Herstellungsverfahren |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2632055A (en) * | 1949-04-18 | 1953-03-17 | John E Parker | Loud speaker system |
| US4042778A (en) * | 1976-04-01 | 1977-08-16 | Clinton Henry H | Collapsible speaker assembly |
| DE19703311A1 (de) * | 1997-01-30 | 1998-08-06 | Sennheiser Electronic | Grenzflächenmikrofon |
| US7260235B1 (en) * | 2000-10-16 | 2007-08-21 | Bose Corporation | Line electroacoustical transducing |
| US7201251B1 (en) | 2002-07-11 | 2007-04-10 | Derrick Lynn Baird | Modular speaker cabinet |
| JP3900278B2 (ja) * | 2002-12-10 | 2007-04-04 | ソニー株式会社 | 投影スクリーン付きアレースピーカ装置 |
| JP2008544675A (ja) * | 2005-06-21 | 2008-12-04 | エヌエックスピー ビー ヴィ | 膨張可能な拡声器筐体 |
| JP4770315B2 (ja) * | 2005-07-28 | 2011-09-14 | ヤマハ株式会社 | スピーカアレイ |
| JP5028786B2 (ja) * | 2005-11-02 | 2012-09-19 | ヤマハ株式会社 | 収音装置 |
| JP4872382B2 (ja) * | 2006-03-02 | 2012-02-08 | ヤマハ株式会社 | 密閉型スピーカアレイ装置 |
| ES2388392T3 (es) * | 2006-05-22 | 2012-10-15 | Audio Pixels Ltd. | Aparato de altavoz digital directo que tiene un patrón de directividad deseado |
| US7787645B2 (en) * | 2007-11-30 | 2010-08-31 | Clair Brothers Audio Systems Inc. | Loudspeaker-transducer array |
| DE102009010278B4 (de) * | 2009-02-16 | 2018-12-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Lautsprecher |
| JP2011176581A (ja) * | 2010-02-24 | 2011-09-08 | Sanyo Electric Co Ltd | スピーカ装置、スピーカシステム、および音響システム |
| US8737674B2 (en) * | 2011-02-11 | 2014-05-27 | Infineon Technologies Ag | Housed loudspeaker array |
| JP5816811B2 (ja) * | 2011-05-18 | 2015-11-18 | パナソニックIpマネジメント株式会社 | スピーカシステムおよびこれを用いた電子機器、移動体装置 |
| CN202261701U (zh) * | 2011-08-24 | 2012-05-30 | 无锡杰夫电声有限公司 | 多点激励扬声器阵列 |
| JP2014078935A (ja) * | 2012-09-18 | 2014-05-01 | Yamaha Corp | スピーカ装置 |
| ITTO20130247A1 (it) * | 2013-03-26 | 2014-09-27 | St Microelectronics Srl | Metodo di incapsulamento di un dispositivo trasduttore mems e dispositivo trasduttore mems incapsulato |
-
2014
- 2014-10-09 DE DE102014220544.1A patent/DE102014220544A1/de not_active Withdrawn
-
2015
- 2015-10-08 EP EP15777936.4A patent/EP3205117A1/de not_active Ceased
- 2015-10-08 CN CN201580054702.0A patent/CN107005755B/zh not_active Expired - Fee Related
- 2015-10-08 WO PCT/EP2015/073255 patent/WO2016055567A1/de not_active Ceased
- 2015-10-08 JP JP2017518821A patent/JP6564855B2/ja not_active Expired - Fee Related
-
2017
- 2017-04-06 US US15/481,356 patent/US10149045B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2451908A (en) * | 2007-08-17 | 2009-02-18 | Wolfson Microelectronics Plc | MEMS microphone package |
| US20120008294A1 (en) * | 2010-07-08 | 2012-01-12 | Jahan Minoo | Printed circuit boards with embedded components |
| CN201718025U (zh) * | 2010-08-03 | 2011-01-19 | 山东共达电声股份有限公司 | 微型扬声器阵列模组 |
| DE102011004577A1 (de) * | 2011-02-23 | 2012-08-23 | Robert Bosch Gmbh | Bauelementträger und Bauteil mit einem MEMS-Bauelement auf einem solchen Bauelementträger |
| DE102011086722A1 (de) * | 2011-11-21 | 2013-05-23 | Robert Bosch Gmbh | Mikromechanische Funktionsvorrichtung, insbesondere Lautsprechervorrichtung, und entsprechendes Herstellungsverfahren |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2016055567A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107005755B (zh) | 2020-05-15 |
| JP2017535170A (ja) | 2017-11-24 |
| WO2016055567A1 (de) | 2016-04-14 |
| CN107005755A (zh) | 2017-08-01 |
| US20170215003A1 (en) | 2017-07-27 |
| DE102014220544A1 (de) | 2016-04-14 |
| US10149045B2 (en) | 2018-12-04 |
| JP6564855B2 (ja) | 2019-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3295683B1 (de) | Schallwandleranordnung mit mems-schallwandlern | |
| DE102015118872B4 (de) | Omnidirektional gelagerter Lautsprecher | |
| DE2815051C2 (de) | Kopfhörer in geschlossener Bauweise | |
| DE68910139T2 (de) | Mikrophon mit akustischer Frequenzanhebung. | |
| DE102009010278B4 (de) | Lautsprecher | |
| DE69622059T2 (de) | Lautsprechersystem für ein Fernsehgerät | |
| DE202013104388U1 (de) | Einsteckkopfhörer | |
| EP3135044B1 (de) | Lautsprecheranordnung mit leiterplattenintegriertem asic | |
| DE112014004165T5 (de) | Lautsprecher mit körnigem Zeolith-Material in einem Tiefziehfolienresonanzvolumen | |
| DE112014004684T5 (de) | Integrierte Lautsprechereinheit | |
| EP3799440A1 (de) | Schallwandlereinheit zum erzeugen und/oder erfassen von schallwellen im hörbaren wellenlängenbereich und/oder im ultraschallbereich | |
| DE102016124084A1 (de) | Lautsprechersystem mit Richtwirkung | |
| WO2015161940A1 (de) | MIKROFON MIT VERGRÖßERTEM RÜCKVOLUMEN UND VERFAHREN ZUR HERSTELLUNG | |
| DE112009000442T5 (de) | Wandler-Anordnung | |
| EP2811756B1 (de) | Lautsprecher | |
| WO2016055567A1 (de) | Lautsprecherarray | |
| EP3189673B1 (de) | Lautsprecheranordnung | |
| WO1999065273A1 (de) | Plattenlautsprecher | |
| EP3739904B1 (de) | Akustisches biegewandlersystem und akustische vorrichtung | |
| DE3144545A1 (de) | Lautsprechersystem | |
| WO2021094371A1 (de) | Mehrfachverbinder, baugruppenverbindung und verfahren sowie vorrichtung zur herstellung eines mehrfachverbinders | |
| DE3506139C1 (de) | Lautsprechersystem für eine qualitativ hochwertige Tonwiedergabe | |
| DE69602579T2 (de) | Sonarantenne mit empfindlichkeitsspitzen mindestens bei zwei frequenzen | |
| DE202012006057U1 (de) | Cajón, System bestehend aus einer Cajón und einer Signalerzeugungseinheit und Signalerzeugungseinheit | |
| DE112006001232B4 (de) | Lautsprecherbox und Lautsprechervorrichtung |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20170404 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| AX | Request for extension of the european patent |
Extension state: BA ME |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20201103 |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V. |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R003 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
| 18R | Application refused |
Effective date: 20221204 |