EP1077583A2 - Lautsprecherbox - Google Patents
Lautsprecherbox Download PDFInfo
- Publication number
- EP1077583A2 EP1077583A2 EP00117565A EP00117565A EP1077583A2 EP 1077583 A2 EP1077583 A2 EP 1077583A2 EP 00117565 A EP00117565 A EP 00117565A EP 00117565 A EP00117565 A EP 00117565A EP 1077583 A2 EP1077583 A2 EP 1077583A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sound
- housing
- loudspeaker
- headrest
- loudspeaker box
- 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.)
- Withdrawn
Links
Images
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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
Definitions
- the invention relates to a speaker with a housing and at least one speaker with chassis.
- the sound cancellation results thereby by the membrane movement of the speaker and the resulting two antiphase sound components.
- the sound propagation of the closed Loudspeaker is almost uniform in all, especially for low frequencies Directions. For high frequencies, a directivity is generated by the as the wavelength decreases, reflections increasingly appear and Propagation time effects the sound propagation is bundled in a given direction.
- the invention is therefore based on the object of specifying a loudspeaker which Directionality in a particularly simple manner, even in the bass range enables.
- a headrest should be specified that is good Bass playback enabled.
- the first-mentioned object is achieved according to the invention by a loudspeaker box with a housing and at least one speaker with a chassis, which by a Housing wall is surrounded such that in the low-frequency range back and front sound of the loudspeaker in a predeterminable direction with a Superimpose sound enhancement.
- the invention is based on the consideration that for individual sound of given areas in terms of sound propagation Directivity should be achieved for a wide frequency range, whereby Feedback from the speaker should be avoided.
- the Loudspeakers should be designed so compact that they can be used even in smaller ones Loudspeakers can be used.
- the invention assumes that a single speaker the associated chassis and its arrangement in the housing wall is carried out that in the sound propagation a sound increase in a predefined direction is created by superimposing sound components.
- the rear and the front sound expediently overlap in the Area of the speaker in the form of a pear.
- a pear-shaped Directivity also called hypercardioid
- hypercardioid is preferred on the near field of the Speaker and set to the bass range for the frequency range.
- a cardioid polar pattern for example, is also equivalent. It can the directivity is set in this way by appropriate design of the housing wall be dependent on that in the near field of the speaker for a particular A particularly high directivity can be achieved at a distance.
- the chassis is preferably arranged in a mirror plane of the housing. This mirror-symmetrical arrangement of the chassis in cross or longitudinal section the housing is roughly the same on both sides - front and back Given air volume. Thus, for the diaphragm movement of the speaker in both Directions given an approximately equal spring stiffness of the air volume. About that in addition, the air volume, which is approximately the same size on both sides, has a special effect same basic frequency response.
- the housing is expediently designed in the form of a cylinder. On such a tubular housing with a circular cross-section enables particularly simply a symmetrical arrangement of the chassis. It is also suitable for the Structure of the speaker box preferably also a housing, which is the shape of a Has cuboid box.
- the cross-section of the cuboid box is, for example Rectangle or square.
- the number on both sides is preferred equal to the sound openings.
- the sound opening is open Insulate the back of the chassis. Through this cover the the sound opening on the rear side is selectively reduced.
- the frequency response is reduced on one side particularly broadband by e.g. this is attenuated 1 to 8 dB.
- a fibrous material is used for insulation.
- the speaker box Due to the particularly compact design and the particularly compact Structure of the speaker box, this is suitable for installation in a vehicle, especially in a headrest.
- the headrest at least one loudspeaker integrated.
- other Loudspeakers can be provided.
- the stability of the loudspeaker contributes to the mechanical stability of the headrest, in particular, it is part of the frame of the headrest.
- the mechanical stability the headrest has a corresponding frame construction, that's it Housing of the loudspeaker box, for example, made of soft plastic.
- the housing of the loudspeaker box is preferably made of hard plastic or aluminum formed if the housing itself to the stability of the headrest contributes. These hard housing parts are padded accordingly, e.g. With Foam.
- Chassis of the loudspeaker surrounding housing wall in the housing and its structure the back and front sound of the speaker especially in low-frequency is influenced in such a way that the sound is specifically lowered on one side is that the two differently strong and antiphase sound components to one Superimposition with a directivity in a preferred direction with excessive sound and lead to a sound reduction in the opposite direction.
- a speaker box 1 is shown with a housing 2 and Loudspeaker 4 with a chassis 6.
- the chassis 6 is from a housing wall 8 surround.
- the housing 2 is designed as a hollow cylinder.
- the chassis 6 with the Housing wall 8 is preferably arranged mirror-symmetrically in the housing 2, i. H. the Chassis 6 is essentially in the longitudinal direction of the housing 2 in a mirror plane arranged.
- the speaker 4 is largely the same on both sides large air volume L is given.
- this can also be partially offset in the housing 2.
- Compensation volume V e.g. plastic sealing cord or other plastic elements, arranged. Because of the two sides - front and back - roughly the same size Air volume L enables the frequency response to be essentially the same.
- the housing wall 8 is designed as a flat baffle.
- the housing 2 has at least for both the rear and the front sound a sound opening 10a or 10b.
- the sound openings 10a and 10b are open a line opposite in the housing 2 and in the area of the sound cone arranged on the back or front sound.
- the back of the speaker 4 lying sound opening 10a is provided with insulation material 12.
- the insulation material 12 serves in particular that the in the direction of the associated sound opening 10a emerging sound is specifically lowered so that the front towards the Sound opening 10b specifically causes a sound increase and thus in through an arrow R shown preferred direction a particularly high directivity through an increased Power output is achieved.
- the insulating material 12 arranged in the sound opening 10a is The amount and density of the material used are chosen so that a defined one Sound reduction and the resulting directivity in the preferred direction is adjustable. A fibrous material is preferably used as the insulation material. By The damping material 12 achieved is particularly broad-band Frequency range approx. 1 to 8 dB.
- FIG 2 shows the loudspeaker box 1 according to Figure 1 in side view
- the Chassis 6 surrounding housing wall 8 extends over the entire length of the housing 2.
- the housing wall 8 is inserted, for example, into the housing 2 and not into closed in more detail with the respective end of the housing 2 closed or attached to this.
- Both the rear and the front of the housing wall 8 are one
- a plurality of sound openings 10a and 10b are provided in the housing 2.
- the rear sound openings 10a provided with insulation material 12.
- the Mirror-symmetrical structure of the chassis 6 in the housing 2 can not only in Longitudinal direction, but alternatively also in the transverse direction in the housing 2.
- FIG. 3 shows an alternative form of the loudspeaker box 1
- the Housing 2 is designed in the form of a cuboid box.
- the chassis 6 with the surrounding Housing wall 8 and the speaker 4 is mirror-symmetrical with respect to Cuboid diagonal surface arranged in the housing 2.
- the housing 2 includes back and two sound openings 10a and 10b on the front.
- the arranged on the back Sound openings 10a are provided with insulation material 12. Due to the On the back, the arrangement of the loudspeaker 4 which reduces the air volume L shows that Housing 2 on the front the compensation volume V.
- the respective thick line 16 describes the shape of the Sound propagation for a low frequency of approximately 150 Hz.
- the distance of the sound openings 10a and 10b on both sides is approx. 5 cm.
- the rear attenuation for the frequency of approx. 150 Hz is approx. 10 to 25 dB.
- the loudspeaker 4 is in particular in the vicinity or the loudspeaker box 1 achieves a so-called hyper cardioid. Therefore, one is Especially one-sided high directivity for both high and low frequencies ensures that when using the loudspeaker 1 in one does not shown vehicle, in particular in a headrest 14, as shown in Figure 5, a particularly targeted and sufficiently good sound reinforcement of the headrest 14 associated Sitting position is allowed.
- the headrest 14 is in at least one support 15 in a seat, not shown, in particular in the backrest, insertable.
- the loudspeaker box 1 in the cushion 16 of the headrest 14 of the vehicle is preferred integrated.
- FIG. 6 shows a headrest 14 with an integrated loudspeaker box 1, which comprises two loudspeakers 4 arranged next to one another.
- the Loudspeakers 4 arranged within the loudspeaker box 1 are only sketchy indicated.
- the headrest 14 is shown in longitudinal section, so that several back and front sound openings 10a and 10b are visible.
- the speaker box is 1 in the upper part of the headrest 14 in such a way that it is supported by a foam cushion 16 is at least partially surrounded.
- the material used for the housing 2 e.g. Plastic, ensures the speaker box 1, if it is an integral part of the headrest 14 or if, as in FIG. 7 shown, is an integral part of a frame 18, for a particularly mechanical Stability of the headrest 14.
- the loudspeaker box 1 is of a tubular frame surround and include at least one speaker inside 4.
- Frame 18 of the headrest 14 also several speakers 1 of different types or a loudspeaker box 1 can be integrated with several loudspeakers 4.
- two loudspeakers 1 can be integrated in the headrest 14 in this way be that stereo playback is possible.
- FIG. 1 Another alternative Embodiment for the speaker box 1 is formed in such a way that the Cavity of the frame 18 of the headrest 14, which is the supporting and protective Function of the headrest 14 fulfilled, the speaker 4 with the chassis 6, so that the frame 18 itself forms the housing 2 for the loudspeaker box 1.
- the frame 18 thus fulfills a double function - housing 2 of the loudspeaker box 1 and mechanical stability of the headrest 14.
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
- FIG 1
- schematisch eine Lautsprecherbox im Querschnitt,
- FIG 2
- schematisch die Lautsprecherbox gemäß FIG 1 in Seitenansicht,
- FIG 3
- schematisch eine als Quaderbox ausgeführte Lautsprecherbox,
- FIG 4
- ein Diagramm für die Richtwirkung des Lautsprechers im Nahbereich (FIG 4a) und im Fernbereich (FIG 4b).
- FIG 5
- schematisch eine Kopfstütze mit einer integrierten Lautsprecherbox im Längsschnitt,
- FIG 6
- schematisch eine Kopfstütze mit einer integrierten Lautsprecherbox in Vorderansicht, und
- FIG 7
- schematisch eine Kopfstütze mit einer integrierten Lautsprecherbox als Rohrrahmen.
Claims (12)
- Lautsprecherbox (1) mit einem Gehäuse (2) und wenigstens einem Lautsprecher (4) mit Chassis (6), welches von einer Gehäusewand (8) derart umgeben ist, daß im niederfrequenten Bereich sich rückseitiger und frontseitiger Schall des Lautsprechers (4) in einer vorgebbaren Richtung mit einer Schallüberhöhung überlagern.
- Lautsprecherbox (1) nach Anspruch 1, bei der die Gehäusewand (8) im Innern des Gehäuses (2) angeordnet ist, wobei sich frontseitig der Gehäusewand (8) die Schallüberhöhung und in abgewandter Richtung rückseitig eine Schallerniedrigung ergibt.
- Lautsprecherbox (1) nach Anspruch 1 oder 2, bei der der rückseitige und der frontseitige Schall sich im Bereich des Lautsprechers (4) in Form einer Birne überlagern.
- Lautsprecherbox (1) nach einem der Ansprüche 1 bis 3, bei der das Chassis (6) in einer Spiegelebene des Gehäuses (2) angeordnet ist.
- Lautsprecherbox (1) nach einem der Ansprüche 1 bis 4, bei der das Gehäuse (2) in Form eines Zylinders ausgebildet ist.
- Lautsprecherbox (1) nach einem der Ansprüche 1 bis 5, bei der das Gehäuse (2) in Form einer Quaderbox ausgebildet ist.
- Lautsprecherbox (1) nach einem der Ansprüche 1 bis 6, bei der in dem Gehäuse (2) für den frontseitigen und den rückseitigen Schall jeweils mindestens eine Schallöffnung (10a, 10b) vorgesehen ist.
- Lautsprecherbox (1) nach Anspruch 7, bei der mindestens eine der Schallöffnungen (10a) mit Dämmmaterial versehen ist.
- Lautsprecherbox (1) nach Anspruch 7 oder 8, bei der wenigstens eine Schallöffnung (10a, 10b) im Bereich des Schallkegels des rückseitigen bzw. des frontseitigen Schalls angeordnet ist.
- Verwendung einer Lautsprecherbox (1) nach einem der Ansprüche 1 bis 9 zum Einbau in ein Fahrzeug, insbesondere in eine Kopfstütze (14).
- Kopfstütze (14) mit wenigstens einer integrierten Lautsprecherbox (1) nach einem der Ansprüche 1 bis 9.
- Kopfstütze (14) mit mehreren integrierten Lautsprecherboxen (1) nach einem der Ansprüche 1 bis 9, wobei als Rahmen für die mechanische Stabilität der Kopfstütze (14) das jeweilige Gehäuse (2) der Lautsprecherbox (1) dient.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19938172 | 1999-08-16 | ||
DE19938172A DE19938172C2 (de) | 1999-08-16 | 1999-08-16 | Lautsprecherbox |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1077583A2 true EP1077583A2 (de) | 2001-02-21 |
EP1077583A3 EP1077583A3 (de) | 2008-02-27 |
Family
ID=7918134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00117565A Withdrawn EP1077583A3 (de) | 1999-08-16 | 2000-08-16 | Lautsprecherbox |
Country Status (4)
Country | Link |
---|---|
US (1) | US6478108B1 (de) |
EP (1) | EP1077583A3 (de) |
JP (1) | JP2001078288A (de) |
DE (1) | DE19938172C2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10255794B3 (de) * | 2002-11-28 | 2004-09-02 | Daimlerchrysler Ag | Akustische Schallführung im Fahrzeug |
EP2599331A2 (de) * | 2010-07-30 | 2013-06-05 | Fraunhofer Gesellschaft zur Förderung der angewandten Wissenschaft E.V. | Kopfstützenlautsprecheranordnung |
CN105764000A (zh) * | 2014-12-16 | 2016-07-13 | 美特科技(苏州)有限公司 | 一种音效播放装置 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10212083B3 (de) * | 2002-03-19 | 2004-01-29 | L&B Lautsprecher Und Beschallungstechnik Gmbh | Elektrodynamischer Schallwandler |
US7463746B2 (en) | 2003-03-31 | 2008-12-09 | Bose Corporation | Narrow opening electroacoustical transducing |
JP4935091B2 (ja) | 2005-05-13 | 2012-05-23 | ソニー株式会社 | 音響再生方法および音響再生システム |
DE102005030712B4 (de) * | 2005-06-29 | 2007-08-16 | Florat Seta | Lautsprecherbox |
JP4359779B2 (ja) * | 2006-01-23 | 2009-11-04 | ソニー株式会社 | 音響再生装置および音響再生方法 |
JP4946305B2 (ja) | 2006-09-22 | 2012-06-06 | ソニー株式会社 | 音響再生システム、音響再生装置および音響再生方法 |
JP4841495B2 (ja) | 2007-04-16 | 2011-12-21 | ソニー株式会社 | 音響再生システムおよびスピーカ装置 |
JP5313753B2 (ja) * | 2009-04-20 | 2013-10-09 | パナソニック株式会社 | リラックス装置 |
US9088842B2 (en) | 2013-03-13 | 2015-07-21 | Bose Corporation | Grille for electroacoustic transducer |
US9327628B2 (en) | 2013-05-31 | 2016-05-03 | Bose Corporation | Automobile headrest |
US9699537B2 (en) | 2014-01-14 | 2017-07-04 | Bose Corporation | Vehicle headrest with speakers |
US10397681B2 (en) * | 2016-12-11 | 2019-08-27 | Base Corporation | Acoustic transducer |
US10950217B1 (en) * | 2017-09-20 | 2021-03-16 | Amazon Technologies, Inc. | Acoustic quadrupole system for head mounted wearable device |
US10917715B2 (en) * | 2018-08-12 | 2021-02-09 | Bose Corporation | Acoustic transducer with split dipole vents |
US11295718B2 (en) | 2018-11-02 | 2022-04-05 | Bose Corporation | Ambient volume control in open audio device |
US11706552B2 (en) * | 2019-09-02 | 2023-07-18 | Bose Corporation | Open audio device |
EP4322549A1 (de) * | 2022-08-12 | 2024-02-14 | Alps Alpine Europe GmbH | Lautsprechereinheit, insbesondere für ein fahrzeug, rahmenteil, der eine lautsprechereinheit und ein fahrzeug umfasst |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0319437A1 (de) * | 1987-12-01 | 1989-06-07 | Pierre Piccaluga | Akustische Gehäuse |
EP0481163A2 (de) * | 1990-10-17 | 1992-04-22 | Pioneer Electronic Corporation | Fahrzeuglautsprecher |
EP0523410A2 (de) * | 1991-06-28 | 1993-01-20 | Nokia (Deutschland) GmbH | Wiedergabeanordnung für Basstöne im Kraftfahrzeug |
DE19507296A1 (de) * | 1994-03-02 | 1995-09-07 | Sony Corp | Lautsprecher |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3952159A (en) * | 1973-03-09 | 1976-04-20 | Zenith Radio Corporation | Ducted port reflex enclosure |
US4231445A (en) * | 1978-12-04 | 1980-11-04 | Johnson Rubein V | Acoustic lens speaker cabinet |
US4549631A (en) * | 1983-10-24 | 1985-10-29 | Bose Corporation | Multiple porting loudspeaker systems |
US4758047A (en) * | 1987-04-13 | 1988-07-19 | Hennington Jeffrey K | Speaker equipped headrest |
DE68919495T2 (de) * | 1988-03-25 | 1995-07-20 | Yamaha Corp | Akustischer Apparat. |
EP0336303A3 (de) * | 1988-04-04 | 1991-05-15 | Yamaha Corporation | Akustischer Apparat |
JPH0298593U (de) * | 1989-01-23 | 1990-08-06 |
-
1999
- 1999-08-16 DE DE19938172A patent/DE19938172C2/de not_active Expired - Fee Related
-
2000
- 2000-08-14 JP JP2000246078A patent/JP2001078288A/ja active Pending
- 2000-08-15 US US09/638,498 patent/US6478108B1/en not_active Expired - Lifetime
- 2000-08-16 EP EP00117565A patent/EP1077583A3/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0319437A1 (de) * | 1987-12-01 | 1989-06-07 | Pierre Piccaluga | Akustische Gehäuse |
EP0481163A2 (de) * | 1990-10-17 | 1992-04-22 | Pioneer Electronic Corporation | Fahrzeuglautsprecher |
EP0523410A2 (de) * | 1991-06-28 | 1993-01-20 | Nokia (Deutschland) GmbH | Wiedergabeanordnung für Basstöne im Kraftfahrzeug |
DE19507296A1 (de) * | 1994-03-02 | 1995-09-07 | Sony Corp | Lautsprecher |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10255794B3 (de) * | 2002-11-28 | 2004-09-02 | Daimlerchrysler Ag | Akustische Schallführung im Fahrzeug |
EP2599331A2 (de) * | 2010-07-30 | 2013-06-05 | Fraunhofer Gesellschaft zur Förderung der angewandten Wissenschaft E.V. | Kopfstützenlautsprecheranordnung |
US9180822B2 (en) | 2010-07-30 | 2015-11-10 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Vehicle with sound wave reflector |
US9517732B2 (en) | 2010-07-30 | 2016-12-13 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Headrest speaker arrangement |
EP3429227A1 (de) * | 2010-07-30 | 2019-01-16 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Kopfstützenlautsprecheranordnung |
EP3866487A1 (de) * | 2010-07-30 | 2021-08-18 | FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. | Fahrzeug mit einer kopfstützenlautsprecheranordnung |
CN105764000A (zh) * | 2014-12-16 | 2016-07-13 | 美特科技(苏州)有限公司 | 一种音效播放装置 |
Also Published As
Publication number | Publication date |
---|---|
DE19938172A1 (de) | 2001-04-05 |
US6478108B1 (en) | 2002-11-12 |
JP2001078288A (ja) | 2001-03-23 |
DE19938172C2 (de) | 2002-04-11 |
EP1077583A3 (de) | 2008-02-27 |
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