EP0924959A3 - Sound reproduction arrangement - Google Patents

Sound reproduction arrangement Download PDF

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Publication number
EP0924959A3
EP0924959A3 EP98123819A EP98123819A EP0924959A3 EP 0924959 A3 EP0924959 A3 EP 0924959A3 EP 98123819 A EP98123819 A EP 98123819A EP 98123819 A EP98123819 A EP 98123819A EP 0924959 A3 EP0924959 A3 EP 0924959A3
Authority
EP
European Patent Office
Prior art keywords
panel
bending waves
recess
prior
art
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
Application number
EP98123819A
Other languages
German (de)
French (fr)
Other versions
EP0924959B1 (en
EP0924959A2 (en
Inventor
Wolfgang Bachmann
Gerhard Krump
Hans-Jürgen Regl
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.)
Harman Becker Automotive Systems GmbH
Original Assignee
Harman Audio Electronic Systems GmbH
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 Harman Audio Electronic Systems GmbH filed Critical Harman Audio Electronic Systems GmbH
Publication of EP0924959A2 publication Critical patent/EP0924959A2/en
Publication of EP0924959A3 publication Critical patent/EP0924959A3/en
Application granted granted Critical
Publication of EP0924959B1 publication Critical patent/EP0924959B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/063—Loudspeakers using a plurality of acoustic drivers

Abstract

Erfindungsgemäß wird eine Schallwiedergabeanordnung angegeben, welche nach dem Biegewellenprinzip arbeitet. Solchen Anordnungen ist gemein, daß ein Paneel 10 vorhanden ist, in welchem durch eine Antriebsanordnung 16 Biegewellen erzeugt werden. Gemäß dem Stand der Technik sind die Antriebsanordnungen 16 mit einer der Oberflächen des Paneels 10 verbunden und werden durch eine Stützkonstruktion, welche als Gegenlager wirkt, gehalten. Derartige Stützkonstruktionen behindern entweder die Ausbreitung der Biegewellen entlang der Oberfläche des Paneels 10 und/oder führen zu einer Vergrößerung der Bautiefe einer solchen Schallwiedergabeanordnung. Um diese Nachteile im Stand der Technik zu vermeiden, wird angegeben, das Antriebssystem 16 in einer Ausnehmung 15 des Paneels 10 anzuordnen. Dies hat nicht nur den zusätzlichen Vorteil, daß das Aussehen des Paneels 10 an beiden Oberflächen vereinheitlicht werden kann, sondern auch den, daß durch die Schwächung des Paneels 10 im Bereich der Ausnehmung 15 die Leistung zur Erzeugung von Biegewellen reduziert bzw. bei gleicher Leistung ein zur Tieftonwiedergabe erforderliches Schwingverhalten herbeigeführt werden kann.

Figure 00000001
According to the invention, a sound reproduction arrangement is specified, which operates on the bending wave principle. Such arrangements have in common that a panel 10 is present, in which by a drive assembly 16 bending waves are generated. According to the prior art, the drive assemblies 16 are connected to one of the surfaces of the panel 10 and are supported by a support structure which acts as an abutment. Such support structures hinder either the propagation of the bending waves along the surface of the panel 10 and / or lead to an increase in the depth of such a sound display device. To avoid these disadvantages in the prior art, it is stated to arrange the drive system 16 in a recess 15 of the panel 10. This not only has the additional advantage that the appearance of the panel 10 can be uniformized on both surfaces, but also that by the weakening of the panel 10 in the region of the recess 15, the power for generating bending waves reduced or at the same power necessary for low frequency reproduction vibration behavior can be brought about.
Figure 00000001
EP98123819A 1997-12-20 1998-12-15 Sound reproduction arrangement Expired - Lifetime EP0924959B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19757097A DE19757097B4 (en) 1997-12-20 1997-12-20 Sound reproduction device
DE19757097 1997-12-20

Publications (3)

Publication Number Publication Date
EP0924959A2 EP0924959A2 (en) 1999-06-23
EP0924959A3 true EP0924959A3 (en) 2005-04-20
EP0924959B1 EP0924959B1 (en) 2009-11-25

Family

ID=7852891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123819A Expired - Lifetime EP0924959B1 (en) 1997-12-20 1998-12-15 Sound reproduction arrangement

Country Status (4)

Country Link
US (1) US6275598B1 (en)
EP (1) EP0924959B1 (en)
JP (1) JPH11252673A (en)
DE (2) DE19757097B4 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19821855A1 (en) 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Flat panel loudspeaker
DE19821860A1 (en) 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Driver for flat panel loudspeaker
DE19821862A1 (en) 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Flat panel loudspeaker
DE19825866A1 (en) 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
DE19840375C2 (en) 1998-09-04 2003-08-28 Harman Audio Electronic Sys baffle
DE19843079A1 (en) 1998-09-19 2000-03-23 Nokia Deutschland Gmbh Multi-resonance plate
DE10001410C2 (en) * 2000-01-14 2001-12-06 Harman Audio Electronic Sys Flat speaker arrangement
DE10025460B4 (en) 2000-05-23 2004-03-18 Harman Audio Electronic Systems Gmbh tweeter
DE10058104C2 (en) 2000-11-23 2003-10-30 Harman Audio Electronic Sys Electromagnetic driver for a plate loudspeaker
DE10058102C2 (en) * 2000-11-23 2003-07-03 Harman Audio Electronic Sys Electrodynamic bending moment driver
US7187776B2 (en) * 2001-07-13 2007-03-06 Harman Becker Automotive Systems Gmbh Planar loudspeaker
US7109959B2 (en) 2002-02-06 2006-09-19 Andersen Corporation Multi-task window
US7180489B2 (en) * 2002-02-06 2007-02-20 Andersen Corporation Automated multi-task window assembly
GB0221503D0 (en) * 2002-09-17 2002-10-23 1 Ltd Loudspeaker
DE102007035189A1 (en) * 2007-07-25 2009-02-05 Siemens Ag Mechanical vibrations coupling device for use in flat surface loudspeaker, has cover element designed as material support, which comprises recess for accommodating transducer, where support is two-dimensionally connected with plate
DE102008027385B4 (en) * 2008-06-09 2019-04-25 Fischer Profil Gmbh Sandwich element for the creation of walls and roofs
NL1038214C2 (en) * 2010-09-01 2012-03-05 Verburg Audio B V FURNITURE WITH INTEGRATED SPEAKER AND METHODS FOR INTEGRATING A SPEAKER IN A M EUBEL.
US9154862B2 (en) * 2013-06-27 2015-10-06 The Boeing Company Flat panel loudspeaker system
DE102021124624A1 (en) 2021-09-23 2023-03-23 LiMES - Immersive Solutions GmbH baffle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112516B1 (en) * 1971-03-16 1972-10-19 Kurtze Guenther Dipl Phys Prof Directional loudspeaker
US4322583A (en) * 1978-11-20 1982-03-30 Sony Corporation Voice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheets
JPS59210791A (en) * 1984-04-17 1984-11-29 Matsushita Electric Ind Co Ltd Diaphragm for speaker
JPS60185498A (en) * 1984-12-24 1985-09-20 Sony Corp Speaker
WO1997009859A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Inertial vibration transducers
WO1997009862A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Panel-form microphones
WO1997009861A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Inertial vibration transducers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2055015B (en) * 1979-06-30 1984-01-04 Pioneer Electronic Corp Voice coil bobbin for a planar diaphragm
JPS57113697A (en) * 1981-01-05 1982-07-15 Murata Mfg Co Ltd Piezoelectric type speaker
US4969197A (en) * 1988-06-10 1990-11-06 Murata Manufacturing Piezoelectric speaker
US5031222A (en) * 1988-07-22 1991-07-09 Murata Manufacturing Co., Ltd. Piezoelectric speaker
US5007707A (en) * 1989-10-30 1991-04-16 Bertagni Jose J Integrated sound and video screen
US5445861A (en) * 1992-09-04 1995-08-29 The Boeing Company Lightweight honeycomb panel structure
US5702230A (en) * 1996-01-29 1997-12-30 General Electric Company Actively controlled acoustic treatment panel

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112516B1 (en) * 1971-03-16 1972-10-19 Kurtze Guenther Dipl Phys Prof Directional loudspeaker
US4322583A (en) * 1978-11-20 1982-03-30 Sony Corporation Voice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheets
JPS59210791A (en) * 1984-04-17 1984-11-29 Matsushita Electric Ind Co Ltd Diaphragm for speaker
JPS60185498A (en) * 1984-12-24 1985-09-20 Sony Corp Speaker
WO1997009859A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Inertial vibration transducers
WO1997009862A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Panel-form microphones
WO1997009861A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Inertial vibration transducers

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 075 (E - 306) 4 April 1985 (1985-04-04) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 027 (E - 378) 4 February 1986 (1986-02-04) *

Also Published As

Publication number Publication date
US6275598B1 (en) 2001-08-14
JPH11252673A (en) 1999-09-17
EP0924959B1 (en) 2009-11-25
DE19757097A1 (en) 1999-06-24
DE19757097B4 (en) 2004-04-15
EP0924959A2 (en) 1999-06-23
DE59814415D1 (en) 2010-01-07

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