EP0158978B1 - Montage de transducteurs dans un baffle, en particulier pour haut-parleurs, de préférence pour enceintes acoustiques - Google Patents

Montage de transducteurs dans un baffle, en particulier pour haut-parleurs, de préférence pour enceintes acoustiques Download PDF

Info

Publication number
EP0158978B1
EP0158978B1 EP85104406A EP85104406A EP0158978B1 EP 0158978 B1 EP0158978 B1 EP 0158978B1 EP 85104406 A EP85104406 A EP 85104406A EP 85104406 A EP85104406 A EP 85104406A EP 0158978 B1 EP0158978 B1 EP 0158978B1
Authority
EP
European Patent Office
Prior art keywords
sound
transducer
housing
transducers
electroacoustic
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 - Lifetime
Application number
EP85104406A
Other languages
German (de)
English (en)
Other versions
EP0158978A3 (en
EP0158978A2 (fr
Inventor
Jürgen Dipl.-Ing. Quaas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QUAAS, JUERGEN, DIPL.-ING.
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT85104406T priority Critical patent/ATE91211T1/de
Publication of EP0158978A2 publication Critical patent/EP0158978A2/fr
Publication of EP0158978A3 publication Critical patent/EP0158978A3/de
Application granted granted Critical
Publication of EP0158978B1 publication Critical patent/EP0158978B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • 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
    • H04R1/22—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
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2892—Mountings or supports for transducers
    • H04R1/2896—Mountings or supports for transducers for loudspeaker transducers
    • 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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2209/00—Details of transducers of the moving-coil, moving-strip, or moving-wire type covered by H04R9/00 but not provided for in any of its subgroups
    • H04R2209/027—Electrical or mechanical reduction of yoke vibration

Definitions

  • the invention relates to a device for reducing vibrations of the housing of sound generators, in particular loudspeakers and preferably loudspeaker boxes.
  • the invention relates in particular to loudspeakers for high-quality transmission of music, as are customary in the professional field and in consumer electronics.
  • the purpose of the invention is to improve the reproduction quality of loudspeakers by eliminating disturbing vibrations from the sound guide and the housing.
  • loudspeakers have the task of converting electrical signals into acoustic ones according to given quality criteria.
  • One of these criteria is the degree of distortion that occurs during transmission.
  • the sound guide and housing of a loudspeaker box itself must not act as a sound source, ie they cannot be induced to resonate by the vibrations generated by the sound transducer.
  • sound guidance used here and in the following generally means a device for acoustically adapting the sound transducer to the surroundings at wavelengths that are larger than its membrane. Examples of this are: baffle, funnel, closed box, etc. There is no housing for the baffle, for the closed box the sound guide and housing are identical.
  • the document EP-A-83 310 describes a sound transducer that is not installed in a sound guide with its chassis and generates sound with a membrane, but instead uses the wall in which it is installed instead of the membrane.
  • the installation wall thus takes on the role of membrane and holder at the same time.
  • the inert mass mentioned is necessary for the function, but does not neutralize vibrations, since the concentrated mass cannot move freely.
  • EP-A-54 945 is the integration of a loudspeaker for high frequencies (inner loudspeakers) with an outer loudspeaker for low frequencies without its own membrane.
  • This arrangement is also not suitable for reducing structure-borne noise.
  • a disadvantage of all of these constructions is also that the effort for material and processing is relatively high, accordingly generates high costs and finally leads to heavy, bulky loudspeakers.
  • the disadvantages are all the more serious the larger and less distortion the loudspeaker box is to be designed. If the sound guidance is not stiff enough or if the sound transducer is connected to the sound guidance via a damping material, the impulse behavior and the efficiency also deteriorate.
  • the invention seeks to remedy this.
  • the invention has set itself the task of providing a universally applicable design principle for loudspeakers which, regardless of the type of sound transducer and the sound guidance, excludes distortions caused by vibrations of the housing and the sound guidance and thereby manages with a minimum of effort for sound guidance and the housing .
  • the invention is based on the fact that the structure-borne sound of sound transducers excites the sound guidance and the housing to vibrate considerably more than the airborne sound, and solves the problem in that the dynamic forces of the sound transducer chassis or the sound guidance on the installation site are compensated for by dynamic opposing forces . This prevents the transmission of the structure-borne sound of the sound transducer or transducers to the sound guide and the housing and consequently achieves the desired reduction in the expenditure for sound guide and the housing.
  • FIG. 1a shows a typical embodiment of the invention using the example of a closed three-way loudspeaker, which is probably the most frequently encountered type.
  • the low-frequency transducers 4,5 are electrically and acoustically connected in phase. If an electrical signal with a positive sign or gradient is present, the membrane of the sound transducer 4 moves in the direction 10 and the membrane of the sound transducer 5 in the direction 11.
  • FIG. 1b shows the same arrangement from FIG. 1a, but here the entire assembly, consisting of the sound transducers 4, 5 and the connections 6, 7, 8, 9, is connected to the sound guide 1 via suspensions 12, 13. There is an annular gap between the sound transducers 4, 5 and the sound guide 1, which is sealed with damping elastic seals 14, 15. Stops 17, 18 limit strong movements of the assembly when the loudspeaker is being transported. In contrast to the arrangement in FIG. 1a, the transmission of vibrations of the chassis of the sound transducers 4, 5 to the sound guide 1 is prevented even if the forces are not completely compensated for. This is the case, for example, if the connections 6, 7, 8, 9 have elastic properties and thus yield to the forces acting on them.
  • FIG. 2a shows an example of the many possible embodiments of the mechanical connection between the sound transducers 4, 5. Only one of the connecting elements that are present several times (mostly four times) is shown. This is a version that is adjustable in length.
  • a rod 21 is inserted into a tube 20 with a good fit.
  • a locking ring 22 fixes the rod 21 and tube 20 together.
  • the free ends of the rod 21 and the tube 20 are expediently provided with threads that enable a screw connection with the sound transducers 4, 5 and the sound guide 1.
  • the locking ring 22 contains two different internal threads, each of which fit on the external threads of the tube 20 and the rod 21.
  • the simplest embodiment is to dispense with the tube 20 and to design the rod 21 as a continuous threaded rod, which is cut to the length required in each case.
  • FIG. 2b shows another example for the execution of the mechanical connection between the sound transducers 4, 5. Again, only one of the multiple connections is shown.
  • the magnets 24, 25 of the sound transducers 4, 5 are provided with tabs 26, 27 to which a connecting piece 28 is fastened by means of screw connections.
  • This version is characterized by its minimal length, which makes the elastic properties of the material less effective.
  • FIG. 3 shows the arrangement of three sound transducers 32, 33, 34 with their mutual mechanical connection 35 using the example of an all-round radiating loudspeaker box 31, which is shown in partial cross section and in perspective.
  • the point symmetry of the arrangement and with the same data of the sound transducers 32, 33, 34, their dynamic forces on the sound guide 31 compensate for zero.
  • the principle of action, which is shown for the mirror-symmetrical arrangement of the sound transducers in Fig.1a applies accordingly for the point-symmetrical arrangement with more than two sound transducers.
  • the mechanical connection 35 is somewhat more complex here, since connecting rods which lie outside the center plane of the respective sound transducer must be connected to one another in order to be able to absorb lateral forces.
  • a horn speaker is shown in partial cross section.
  • Sound transducers 42, 43 which are connected to one another via mechanical connections 44, 45, 46, 47 (47 hidden behind 45) and are closed at the rear by a sound guide 41, work as drivers for the horn sound guide 40. In this arrangement, more than two sound converters can be combined.
  • Figure 5 shows a three-way speaker in partial longitudinal section from the front and from the side.
  • a sound guide 50 contains a high-frequency sound transducer 51, a mid-range sound transducer 52 and, instead of a pair of large low-frequency sound transducers, three pairs of small low-frequency sound transducers 53, 54, 55, 56, 57, 58.
  • This arrangement ensures that the low-frequency sound transducers emit better towards the front, which is naturally difficult due to the side installation at higher frequencies and can only be improved by smaller diaphragm diameters.
  • Front radiation occurs when the membrane is smaller than the smallest wavelength to be emitted.
  • Figure 6 shows a partial cross-section of a pentagonal speaker box.
  • Sound transducers 61, 62 are installed in a sound guide 60 and are connected to one another by mechanical connections 63, 64, 65 (65 hidden behind 63). Due to the geometry of the sound guide 60, the sound transducers 61, 62 are inclined at an angle to each other. As a result, the mutual compensation of the forces is not zero, a residual component remains.
  • the example is intended to show that even in loudspeakers in which the sound transducers are not exactly parallel to one another, it makes sense to mechanically connect the sound transducers to one another, because this at least reduces the forces on the sound guidance. The effectiveness of the measure depends on the angle between the transducers.
  • FIG. 7a shows a three-way loudspeaker in partial cross section.
  • a sound guide 70 designed as a closed box contains, in addition to tweeters and mid-range transducers 71, 72, a low-frequency transducer 73, which is connected to a low-frequency transducer 74 by means of mechanical connections 75, 76, 77, 78 (78 hidden behind 76).
  • the sound transducer 73 is mounted on the front and emits acoustically, while the sound transducer 74 is mounted inside the sound guide 70 and does not emit any sound to the outside. It only serves to compensate for the structure-borne noise of sound transducer 73.
  • This embodiment is particularly suitable for retrofitting in existing loudspeaker boxes.
  • FIG. 7b shows the principle of the electrical wiring of the loudspeaker box from FIG. 7a as a passive box.
  • the input signal reaches the individual sound transducers 71, 72, 73 via a crossover and the transducer 74 via a potentiometer 79 designed as a T-actuator Potentiometer 79 is adjusted for the best possible compensation.
  • the design as a T-actuator ensures constant impedance in the entire setting range and thus avoids effects on the crossover.
  • Wiring examples for active loudspeakers follow in FIGS. 9a-c.
  • FIG. 8 shows a possible improved embodiment of the arrangement according to FIG. 7a in half cross-section.
  • a sound transducer 81 is connected to a special compensation transducer 85 via brackets 83, 84, which at the same time serve for fastening with a sound guide 80.
  • the membrane and the basket can be omitted.
  • the drive system here: magnet, voice coil, centering
  • a special compensation transducer 85 is thus obtained, which is designed to be far less complex than a normal sound transducer.
  • the compensation transducer 85 is advantageously connected to the actual sound transducer 81 to form an integral unit which avoids problems of mechanical and dynamic mutual adaptation.
  • this is a vibration-neutral suspension
  • the chassis of the sound transducer 81 can thus be made cheaper.
  • FIGS. 9a-c show block diagrams for different wiring options of an active loudspeaker box according to FIG. 8 or FIG. 7a.
  • the input signal of the respective circuit is the signal coming from the crossover, which is assigned to the sound converter 81.
  • this signal arrives via a power amplifier 90 to the sound transducer 81 and in parallel to it via an equalizer 92 to a second power amplifier 91 and to the compensation transducer 85.
  • the advantage of this circuit compared to a simple parallel connection of the transducers 81, 85 is that the equalizer 92 makes differences in the frequency responses of the transducers 81, 85 can be compensated. This equalization is usually easier to implement and adjust when the circuit is active than with a passive circuit, such as in Fig. 7b.
  • FIG. 9b the input signal again reaches the sound transducer 81 via the amplifier 90.
  • a measuring device 94 supplies a signal via a measuring amplifier 93 which corresponds to the membrane amplitude of the sound transducer 81.
  • This signal passes through the power amplifier 91 to the compensation converter 85.
  • the measuring amplifier can contain an equalization which corrects irregularities in the frequency response of the converter 85.
  • Different types of transducers 81, sound guides, changes in acoustic load, etc. are automatically taken into account here.
  • FIG. 9c shows a circuit for regulated active loudspeaker boxes.
  • the input signal reaches a control amplifier 95 via a comparison point, is amplified via the power amplifier 90 and fed to the sound converter 81. Its membrane amplitude is again measured directly or indirectly via a measuring device 94 and a measuring amplifier 93 and closes the control loop for the sound converter 81 via the comparison point. At the same time, the signal coming from the measuring amplifier 93 is amplified by the power amplifier 91 and fed to the converter 85. It is also possible to set up a similar control loop for the converter 85 in order to correct its irregularities in the frequency response and data scatter.
  • the invention is explained essentially for dynamic sound transducers in the low frequency range.
  • this is due to the fact that dynamic sound transducers are mostly used in the low frequency range.
  • the problem of structure-borne noise in a loudspeaker box mainly occurs at low frequencies. The effective forces are greatest here and the internal damping of the material of the sound guide and the housing is usually the lowest.
  • the principle of the invention is neither restricted to a specific frequency range nor tied to a specific type of transducer. In the case of reusable loudspeakers in particular, depending on the construction, it makes sense to apply the invention also to sound transducers of higher frequency ranges.
  • the effectiveness of the invention depends to a large extent on the mechanical connection of the sound transducers to one another. Connection points must be without play and materials with elastic properties should not be used. When designing, it must also be borne in mind that a certain minimum distance between the drive systems, i.e. magnets or electrodes, must be observed in order to prevent any adverse mutual influence.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)

Claims (10)

  1. Générateur acoustique, de préférence enceinte acoustique, constitué d'un boîtier (1) avec un transducteur acoustique (4) disposé sur une paroi latérale et un haut-parleur (5) disposé de manière symétrique sur la paroi latérale opposée, qui dirigent par l'intermédiaire de leurs éléments de fixation le bruit de structure indésirable dans le boîtier (1),
    caractérisé en ce que les deux haut-parleurs (4, 5) sont, au moyen de pièces d'assemblage (6, 7, 8, 9), réunis en une unité en soi mécaniquement rigide (4, 5, 6, 7, 8, 9), la liaison mécanique mutuelle des transducteurs acoustiques étant disposée indépendamment du guidage du son ou du boîtier de l'enceinte acoustique.
  2. Générateur acoustique selon la revendication 1, caractérisé en ce que les transducteurs acoustiques (42, 43) sont disposés sur deux côtés opposés de leurs pièces d'assemblage (44, 56, 46, 47), qui se trouvent à l'intérieur du boîtier (41).
  3. Générateur acoustique selon la revendication 1 ou 2, caractérisé en ce que les transducteurs acoustiques présentent des caractéristiques principales identiques, notamment celles qui sont déterminantes pour le bruit de structure.
  4. Générateur acoustique selon l'une des revendications 1 à 3, caractérisé en ce que les pièces d'assemblage (20, 21) entre les transducteurs acoustiques (4, 5) sont réglables en longueur et pourvues d'un élément de blocage (22).
  5. Générateur acoustique selon l'une des revendications 1 à 4, caractérisé en ce que les parois opposées du boîtier (60), sur lesquelles sont disposés les transducteurs acoustiques (61, 62), ne sont pas parallèles.
  6. Générateur acoustique selon l'une des revendications 1 à 5, caractérisé en ce que les pièces d'assemblage (28) assemblent rigidement entre eux de manière courte les aimants (24, 25) des transducteurs acoustiques (4, 5), au moyen d'éléments de fixation (26, 27) qui sont disposés sur les aimants (24, 25).
  7. Générateur acoustique selon l'une des revendications 1 à 6, caractérisé en ce que l'ensemble (4, 5, 6, 7, 8, 9) constitué des transducteurs acoustiques et des pièces d'assemblage forme la masse d'un pendule avec les suspensions (12, 13), le mouvement de ce pendule étant amorti par les bagues d'amortissement viscoélastiques (14, 15) et limité par les bagues de butée (17, 18).
  8. Générateur acoustique constitué d'un boîtier (70), d'un transducteur acoustique (73) disposé sur la paroi avant et d'un transducteur acoustique (74) disposé de manière symétrique à l'intérieur du boîtier (70), qui sont tous deux réunis en une unité en soi mécaniquement rigide (73, 74, 75, 76, 77, 78) au moyen de pièces d'assemblage (75, 76, 77, 78) qui peuvent considérablement mieux transmettre le bruit de structure que le boîtier (70), selon la revendication 1, caractérisé en ce que je transducteur acoustique intérieur (74) est accordé au transducteur acoustique (73), acoustiquement actif avec le boîtier (70), de telle sorte que le bruit de structure produit par le transducteur acoustique (73) est effacé de celui produit par le transducteur (74) par l'intermédiaire des pièces d'assemblage (75, 76, 77, 78), et n'arrive plus dans le boîtier (70).
  9. Générateur acoustique selon la revendication 8, caractérisé en ce que le transducteur (85) qui se trouve à l'intérieur du boîtier (80) contient, au lieu d'une membrane, une masse mobile concentrée.
  10. Générateur acoustique selon la revendication 8 ou 9, caractérisé en ce que le transducteur (81) générateur de son et le transducteur compensateur (85) forment, à l'aide des pièces d'assemblage (83, 84), un transducteur acoustique dépourvu de bruit de structure, les pièces d'assemblage (83, 84) servant à la fixation avec le boîtier (80).
EP85104406A 1984-04-17 1985-04-12 Montage de transducteurs dans un baffle, en particulier pour haut-parleurs, de préférence pour enceintes acoustiques Expired - Lifetime EP0158978B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85104406T ATE91211T1 (de) 1984-04-17 1985-04-12 Einbau von schallwandlern in eine schallfuehrung, insbesondere fuer lautsprecher, vorzugsweise fuer lautsprecherboxen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3414407A DE3414407C2 (de) 1984-04-17 1984-04-17 Anordnung von Schallwandlern in einer Schallführung, insbesondere für Lautsprecherboxen
DE3414407 1984-04-17

Publications (3)

Publication Number Publication Date
EP0158978A2 EP0158978A2 (fr) 1985-10-23
EP0158978A3 EP0158978A3 (en) 1987-09-16
EP0158978B1 true EP0158978B1 (fr) 1993-06-30

Family

ID=6233765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104406A Expired - Lifetime EP0158978B1 (fr) 1984-04-17 1985-04-12 Montage de transducteurs dans un baffle, en particulier pour haut-parleurs, de préférence pour enceintes acoustiques

Country Status (5)

Country Link
US (1) US4805221A (fr)
EP (1) EP0158978B1 (fr)
JP (1) JPS61147700A (fr)
AT (1) ATE91211T1 (fr)
DE (2) DE3414407C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ301578B6 (cs) * 2005-02-25 2010-04-21 Šroll@Ludek Reproduktorová soustava vyzarující válcovou akustickou vlnu

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK156454C (da) * 1985-01-03 1990-01-15 Johan Peter Lyngdorf Hoejttalerenhed med mere end en bas/mellemtone-hoejttaler
JPS63212296A (ja) * 1987-02-27 1988-09-05 Pioneer Electronic Corp スピ−カシステム
US5073945A (en) * 1989-07-24 1991-12-17 Matsushita Electric Industrial Co., Ltd. Loudspeaker system
NL8902831A (nl) * 1989-11-16 1991-06-17 Philips Nv Luidsprekersysteem bevattende een helmholtz resonator gekoppeld met een akoestische buis.
US5210802A (en) * 1990-04-30 1993-05-11 Bose Corporation Acoustic imaging
BE1004807A3 (nl) * 1991-03-19 1993-02-02 Schellekens Ivan Het weergeven van geluid zonder mechanische intermodulatievervorming.
GB2256560B (en) * 1991-05-31 1994-11-23 Kef Electronics Ltd Loudspeaker
TW203674B (fr) * 1991-07-09 1993-04-11 Tong Hoon Sohn
US5343535A (en) * 1993-05-07 1994-08-30 Marshall Ronald N Loudspeaker device
US5502772A (en) * 1994-07-18 1996-03-26 Felder; Charles J. Speaker having improved sound square, sound bank, sound angle, sound wedge and sound radiators
US5809153A (en) * 1996-12-04 1998-09-15 Bose Corporation Electroacoustical transducing
US5815589A (en) * 1997-02-18 1998-09-29 Wainwright; Charles E. Push-pull transmission line loudspeaker
JP2001519637A (ja) * 1997-10-02 2001-10-23 ゲッデス、アール・アール 改良された低周波数変換器囲み
US7212644B2 (en) * 2000-05-26 2007-05-01 California Institute Of Technology Resonant frequency adjustment using tunable damping rods
JP2001352592A (ja) * 2000-06-08 2001-12-21 Fujitsu Ten Ltd スピーカ構造
JP4064160B2 (ja) * 2002-06-07 2008-03-19 富士通テン株式会社 スピーカ装置
GB2414620A (en) * 2004-05-24 2005-11-30 Blast Loudspeakers Ltd Loudspeaker with opposing drivers for vibration cancelling
US20070030992A1 (en) * 2005-08-03 2007-02-08 Rauen Kenneth M Low frequency loudspeaker enclosure
US7668331B2 (en) * 2005-10-07 2010-02-23 Wailit Yen Fidelity speaker
US20070158134A1 (en) * 2006-01-11 2007-07-12 Fryette Steven M Speaker cabinet acoustics control mechanism
US7881488B2 (en) * 2006-11-01 2011-02-01 Bose Corporation In-plane speaker
US20080110320A1 (en) * 2006-11-13 2008-05-15 Boone Cheynetta L Matter for the all aluminum housing used for producing sound
WO2009039852A1 (fr) * 2007-09-28 2009-04-02 Lennart Jarde Système d'émission sonore isobare
US20090084866A1 (en) * 2007-10-01 2009-04-02 Nuventix Inc. Vibration balanced synthetic jet ejector
US20120057734A1 (en) * 2008-07-23 2012-03-08 Asius Technologies, Llc Hearing Device System and Method
US20100246880A1 (en) * 2009-03-30 2010-09-30 Oxford J Craig Method and apparatus for enhanced stimulation of the limbic auditory response
GB2491108B (en) 2011-05-18 2014-06-04 Gp Acoustics Uk Ltd Loudspeaker
US9503806B2 (en) 2012-03-27 2016-11-22 Joseph B Crosswell Loudspeaker system audio recovery imaging amplifier
RU2680423C2 (ru) * 2013-03-13 2019-02-21 ТиЭйчИкс ЛТД Акустическая система узкого профиля
NL1040501C2 (en) * 2013-11-15 2015-05-19 Qsources Bvba Device for creating a sound source.
FR3087071B1 (fr) * 2018-10-08 2020-11-06 Devialet Enceinte acoustique comportant une coque en matiere plastique monobloc
FR3087067B1 (fr) * 2018-10-08 2022-02-25 Devialet Enceinte acoustique a deux haut-parleurs tete-beche fixes sur une armature interne
FR3089380B1 (fr) * 2018-12-03 2020-11-20 Sagemcom Broadband Sas Pièce de rigidification pour caisson d’enceinte acoustique
EP3726849B1 (fr) * 2019-04-15 2024-07-24 Harman Becker Automotive Systems GmbH Agencement de haut-parleur
CN110719549A (zh) * 2019-10-15 2020-01-21 李世煌 一种立体声音箱和立体声系统
GB2591223A (en) 2020-01-22 2021-07-28 Gp Acoustics International Ltd Loudspeakers
EP4207797A1 (fr) * 2021-12-30 2023-07-05 Harman Becker Automotive Systems GmbH Haut-parleur
NL1044443B1 (nl) * 2022-10-26 2024-05-14 Rob Meijst Drs Luidsprekersysteem met per kanaal twee luidsprekers in afzonderlijke kasten, met deflectieorganen ertussen voor geluidsexcitatie in dwarsrichting
AU2023200776A1 (en) * 2023-01-31 2024-08-15 Jong Bae Lee Multiple-driver adapter having plane wave equalizer

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2108846A (en) * 1934-08-29 1938-02-22 Walter O Brown Radio cabinet
US2041777A (en) * 1935-07-10 1936-05-26 Stromberg Carlson Telephone Sound reproducing system
US2072035A (en) * 1936-02-13 1937-02-23 Richard O Bohannon Sound damping device for loudspeakers
GB659066A (en) * 1947-11-06 1951-10-17 Ian Irvine Boswell Improvements in or relating to electro-mechanical transducers
US2835735A (en) * 1953-12-04 1958-05-20 Electro Voice Anti-shock transducer
US3064086A (en) * 1961-01-31 1962-11-13 Audio Tours Inc Loud-speaker enclosures
US3393764A (en) * 1966-12-27 1968-07-23 Curtiss R. Schafer Loudspeaker systems
FR1527032A (fr) * 1967-04-03 1968-05-31 Convertisseur électro-acoustique
US3781475A (en) * 1971-05-26 1973-12-25 Columbia Broadcasting Syst Inc Counterbalanced two speaker rotary tremolo device
FR2241942B1 (fr) * 1973-08-24 1976-05-07 Tretiakoff Oleg
US3909531A (en) * 1974-03-25 1975-09-30 Custom Electronics Inc Acoustic transducer system
JPS5245324A (en) * 1975-08-04 1977-04-09 Kenji Isozumi Speaker showing no vibration
FR2380704A7 (fr) * 1977-02-11 1978-09-08 Audax Enceinte acoustique
US4379951A (en) * 1977-04-20 1983-04-12 Gabr Saad Z M Electro-acoustic transducer means
DE2725346C3 (de) * 1977-06-04 1981-05-14 Josef Wilhelm 8725 Arnstein Manger Lautsprecher
JPS606157B2 (ja) * 1977-07-25 1985-02-15 ソニー株式会社 スピ−カ
DE2837520A1 (de) * 1978-08-28 1980-03-27 Harald Schuster Lautsprecher, passiv servokontrolliert mit korrektur der phasendrehung
DE2847446A1 (de) * 1978-11-02 1980-05-22 Eric Faesecke Kg Lautsprecherbox
NL8001592A (nl) * 1980-03-18 1981-10-16 Philips Nv Mfb systeem met een overnamenetwerk.
DE3037227A1 (de) * 1980-10-02 1982-04-29 Alfred 2800 Bremen Rinkowski Lautsprecher mit koerperschallresonator
US4420061A (en) * 1980-11-03 1983-12-13 Michael Levy Pentagonal speaker enclosure with a downward directed dynamic damping system
DE3172790D1 (en) * 1980-12-19 1985-12-05 Nissan Motor Speaker for automotive vehicle audio system
US4451711A (en) * 1981-05-07 1984-05-29 Mark Jackson Readily portable speaker enclosure
DE3141167A1 (de) * 1981-10-13 1983-04-28 Alfred 2800 Bremen Rinkowski Lautsprecheranordnung, mit gehaeuse
CH645227A5 (fr) * 1981-12-22 1984-09-14 Multiphonie Sa Transducteur electro-acoustique.
GB2122051A (en) * 1982-06-01 1984-01-04 Goodmans Loudspeakers Limited Loudspeaker systems
FR2545674B1 (fr) * 1983-05-02 1985-08-16 Leguillou Denis Enceinte acoustique pentagonale a tirants internes etoiles autoporteurs
DK156454C (da) * 1985-01-03 1990-01-15 Johan Peter Lyngdorf Hoejttalerenhed med mere end en bas/mellemtone-hoejttaler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ301578B6 (cs) * 2005-02-25 2010-04-21 Šroll@Ludek Reproduktorová soustava vyzarující válcovou akustickou vlnu

Also Published As

Publication number Publication date
ATE91211T1 (de) 1993-07-15
US4805221A (en) 1989-02-14
DE3414407A1 (de) 1985-10-24
DE3587425D1 (de) 1993-08-05
DE3414407C2 (de) 1986-02-20
JPS61147700A (ja) 1986-07-05
EP0158978A3 (en) 1987-09-16
EP0158978A2 (fr) 1985-10-23

Similar Documents

Publication Publication Date Title
EP0158978B1 (fr) Montage de transducteurs dans un baffle, en particulier pour haut-parleurs, de préférence pour enceintes acoustiques
DE60315547T2 (de) Lautsprecheranordnung
DE3650087T2 (de) Lautsprecher geeignet für einsatz in einer ecke.
DE3023291C2 (fr)
DE69116948T2 (de) Methode und Gerät zur Geräuschunterdrückung in Kopfhörern
DE2536439A1 (de) Lautsprechersystem
DE68908766T2 (de) Tonanlage, besonders zur stereophonen Tonwiedergabe in einem Fernsehempfangsgerät mit integriertem Tieftonlautsprecher grosser Dimensionen.
DE2057905B1 (de) Lautsprecheranordnung mit von einem Antriebssystem angetriebener Hochton- und Tieftonmembran
DE102007006580A1 (de) Lautsprecher und Verfahren zur akustischen Schallausgabe
DE2354614A1 (de) Passive abstrahlungsmembran
DE102011086978B4 (de) Fahrzeuginternes lautsprechersystem
DE3231622C2 (de) Bassreflex-Lautsprechersystem
DE69811657T2 (de) Lautsprechersystem
DE2726184A1 (de) Lautsprecher
EP1169884B1 (fr) Haut-parleur plan et son procede de production
DE202014009095U1 (de) Lautsprecherbox mit veränderlicher Richtwirkung für die mittleren- und hohen Frequenzen
DE10027618B4 (de) Schallwandler
DE3144545A1 (de) Lautsprechersystem
DE2809052C2 (fr)
WO2014063820A1 (fr) Dispositif de réduction à un minimum de la résonance de boîtiers
EP1965602B1 (fr) Enceinte acoustique
EP1142445A2 (fr) Haut-parleur a membrane de graves
DE3918654C2 (fr)
DE19718993C2 (de) Dämpfungseinheit zur Schwingungsdämpfung
DE69211196T2 (de) Klangwiedergabevorrichtung ohne mechanische Intermodulation- verzerrung

Legal Events

Date Code Title Description
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

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19860318

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: QUAAS, JUERGEN

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: QUAAS, JUERGEN, DIPL.-ING.

17Q First examination report despatched

Effective date: 19890301

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930630

Ref country code: NL

Effective date: 19930630

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 19930630

Ref country code: GB

Effective date: 19930630

Ref country code: FR

Effective date: 19930630

Ref country code: BE

Effective date: 19930630

REF Corresponds to:

Ref document number: 91211

Country of ref document: AT

Date of ref document: 19930715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3587425

Country of ref document: DE

Date of ref document: 19930805

EN Fr: translation not filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19930630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19940412

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940430

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19990628

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030626

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041103