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DE69106712D1 - PANEL-SHAPED SPEAKER. - Google Patents

PANEL-SHAPED SPEAKER.

Info

Publication number
DE69106712D1
DE69106712D1 DE69106712T DE69106712T DE69106712D1 DE 69106712 D1 DE69106712 D1 DE 69106712D1 DE 69106712 T DE69106712 T DE 69106712T DE 69106712 T DE69106712 T DE 69106712T DE 69106712 D1 DE69106712 D1 DE 69106712D1
Authority
DE
Germany
Prior art keywords
panel
skinned
aluminium
motions
composite
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
DE69106712T
Other languages
German (de)
Other versions
DE69106712T2 (en
Inventor
Kenneth Heron
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.)
Qinetiq Ltd
Original Assignee
UK Secretary of State for Defence
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
Priority claimed from GB9017133A external-priority patent/GB2246684A/en
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Application granted granted Critical
Publication of DE69106712D1 publication Critical patent/DE69106712D1/en
Publication of DE69106712T2 publication Critical patent/DE69106712T2/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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated
    • G10K1/066—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated the sounding member being a tube, plate or rod
    • 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
    • H04R1/02—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; 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
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Laminated Bodies (AREA)

Abstract

A panel-form loudspeaker has a resonant multi-mode radiator panel which is excited at frequencies above the fundamental frequency and the coincidence frequency of the panel to provide high radiation efficiency through multi-medal motions within the panel, in contrast to the pistonic motions required of conventional loudspeakers. The radiator panel is a skinned composite with a honeycomb or similar core and must be such that it has a ratio of bending stiffness to the third power of panel mass per unit area (in mks units) of at least 10 and preferably at least 100. An aluminium skinned, aluminium honeycomb cored composite can meet this more severe criterion easily. <IMAGE>
DE69106712T 1990-08-04 1991-07-26 PANEL-SHAPED SPEAKER. Expired - Lifetime DE69106712T2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9017133A GB2246684A (en) 1990-08-04 1990-08-04 Panel form loudspeaker
GB919103969A GB9103969D0 (en) 1990-08-04 1991-02-26 Panel-form loudspeaker
PCT/GB1991/001262 WO1992003024A1 (en) 1990-08-04 1991-07-26 Panel-form loudspeaker

Publications (2)

Publication Number Publication Date
DE69106712D1 true DE69106712D1 (en) 1995-02-23
DE69106712T2 DE69106712T2 (en) 1995-06-08

Family

ID=26297455

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69106712T Expired - Lifetime DE69106712T2 (en) 1990-08-04 1991-07-26 PANEL-SHAPED SPEAKER.

Country Status (8)

Country Link
EP (1) EP0541646B1 (en)
JP (2) JP3034952B2 (en)
AT (1) ATE117155T1 (en)
DE (1) DE69106712T2 (en)
DK (1) DK0541646T3 (en)
GB (1) GB2262861B (en)
HK (1) HK1000544A1 (en)
WO (1) WO1992003024A1 (en)

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ATE177282T1 (en) * 1995-09-02 1999-03-15 New Transducers Ltd BILLBOARDS WITH SPEAKERS
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EA000836B1 (en) * 1995-09-02 2000-04-24 Нью Трэнсдьюсерз Лимитед Inertial vibration transducer
PL182468B1 (en) * 1995-09-02 2002-01-31 New Transducers Ltd Wishes card or similar one
RO119046B1 (en) * 1995-09-02 2004-02-27 Verityágroupáplc Panel-shaped speaker
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US6519349B1 (en) 1995-09-02 2003-02-11 New Transducers Limited Loudspeaker
WO1997009856A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited A portable compact disc player
AU702867B2 (en) * 1995-09-02 1999-03-11 New Transducers Limited Personal computers
US6327369B1 (en) * 1995-09-02 2001-12-04 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
DE69601726T2 (en) * 1995-09-02 1999-09-16 New Transducers Ltd., Huntingdon PASSENGER VEHICLE WITH SPEAKERS WITH PANEL-SHAPED ACOUSTIC RADIATION ELEMENTS
SK25898A3 (en) * 1995-09-02 1998-09-09 New Transducers Ltd Visual display means incorporating loudspeakers
DE69602203T2 (en) * 1995-09-02 1999-09-16 New Transducers Ltd., Huntingdon PANEL PANEL SPEAKERS
US6266426B1 (en) 1995-09-02 2001-07-24 New Transducers Limited Visual display means incorporating loudspeakers
IL123371A (en) * 1995-09-02 2001-07-24 New Transducers Ltd Vibration transducers
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KR19990044171A (en) 1995-09-02 1999-06-25 헨리 에이지마 Loudspeaker with panel acoustic radiation element
US6304661B1 (en) 1995-09-02 2001-10-16 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
ATE177579T1 (en) * 1995-09-02 1999-03-15 New Transducers Ltd DISPLAY SCREENS CONTAINING SPEAKERS
GB9704486D0 (en) * 1997-03-04 1997-04-23 New Transducers Ltd Acoustic devices etc
US6546106B2 (en) 1996-09-03 2003-04-08 New Transducers Limited Acoustic device
US6324294B1 (en) 1996-09-03 2001-11-27 New Transducers Limited Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
US6522760B2 (en) 1996-09-03 2003-02-18 New Transducers Limited Active acoustic devices
US6282298B1 (en) 1996-09-03 2001-08-28 New Transducers Limited Acoustic device
GB9818959D0 (en) * 1998-09-02 1998-10-21 New Transducers Ltd Panelform loudspeaker
GB9806994D0 (en) * 1998-04-02 1998-06-03 New Transducers Ltd Acoustic device
GB2320393A (en) * 1996-12-11 1998-06-17 Secr Defence Panel form loudspeaker
JP2001507898A (en) * 1997-01-09 2001-06-12 ニュー トランスデューサーズ リミテッド Loudspeaker
GB9709959D0 (en) * 1997-05-15 1997-07-09 New Transducers Ltd Panel-form loudspeakers
IL134834A0 (en) * 1997-09-04 2001-05-20 New Transducers Ltd Loudspeakers
CN1547416B (en) * 1998-01-16 2011-07-06 索尼公司 Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein
PL341377A1 (en) * 1998-01-20 2001-04-09 New Transducers Ltd Active acoustic device incorporating panel-like components
AU2002300608B2 (en) * 1998-01-20 2005-10-06 New Transducers Limited Active Acoustic Devices Comprising Panel Members
TW450011B (en) 1998-02-10 2001-08-11 New Transducers Ltd Acoustic devices
AR019105A1 (en) * 1998-04-28 2001-12-26 New Transducers Ltd METHOD FOR DETERMINING THE ADVANTAGE PLACEMENT OR PLACEMENTS TO POSITION A FLEXION WAVE TRANSDUCER DEVICE.
DE19818988A1 (en) * 1998-04-28 1999-11-11 Siemens Ag Electronic apparatus with electro-acoustic transducer e.g. for mobile telephone
GB9812225D0 (en) * 1998-06-05 1998-08-05 Medicine Acoustic devices
DE19825866A1 (en) 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
DE29923450U1 (en) 1998-06-22 2000-09-28 Slab Technology Ltd, Albany, Auckland speaker
GB9905038D0 (en) 1999-03-05 1999-04-28 New Transducers Ltd Loudpeakers
SK20292000A3 (en) 1998-07-03 2001-06-11 New Transducers Limited Resonant panel-form loudspeaker
GB2341511A (en) * 1998-09-14 2000-03-15 New Transducers Ltd The diaphragm of a sandwich-construction panel-form loudspeaker has collapsed edges
DE19843079A1 (en) * 1998-09-19 2000-03-23 Nokia Deutschland Gmbh Multi-resonance plate
GB9911271D0 (en) * 1999-05-15 1999-07-14 New Transducers Ltd Acoustic device
JP3512087B2 (en) * 1999-06-15 2004-03-29 日本電気株式会社 Panel speaker
DE19943084A1 (en) * 1999-09-09 2001-04-05 Harman Audio Electronic Sys Sound transducer
JP3591578B2 (en) 1999-11-09 2004-11-24 ヤマハ株式会社 Acoustic radiator
EP1170977A1 (en) * 2000-07-04 2002-01-09 Tai-Yan Kam Laminated composite panel-form loudspeaker
GB0018996D0 (en) 2000-08-03 2000-09-20 New Transducers Ltd Bending wave loudspeaker
US6826285B2 (en) 2000-08-03 2004-11-30 New Transducers Limited Bending wave loudspeaker
GB0102865D0 (en) 2001-02-06 2001-03-21 Secr Defence Brit Panel form loudspeaker
US8144380B2 (en) * 2002-09-26 2012-03-27 Seiko Epson Corporation Drive mechanism
US10158337B2 (en) 2004-08-10 2018-12-18 Bongiovi Acoustics Llc System and method for digital signal processing
US11431312B2 (en) 2004-08-10 2022-08-30 Bongiovi Acoustics Llc System and method for digital signal processing
US10848118B2 (en) 2004-08-10 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US8284955B2 (en) 2006-02-07 2012-10-09 Bongiovi Acoustics Llc System and method for digital signal processing
US7817810B2 (en) 2005-08-03 2010-10-19 The Boeing Company Flat panel loudspeaker system
US10848867B2 (en) 2006-02-07 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10701505B2 (en) 2006-02-07 2020-06-30 Bongiovi Acoustics Llc. System, method, and apparatus for generating and digitally processing a head related audio transfer function
US11202161B2 (en) 2006-02-07 2021-12-14 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
US10069471B2 (en) 2006-02-07 2018-09-04 Bongiovi Acoustics Llc System and method for digital signal processing
US8100226B2 (en) * 2009-12-22 2012-01-24 Usg Interiors, Inc. Porous nonwoven scrims in acoustical panels
US9264004B2 (en) 2013-06-12 2016-02-16 Bongiovi Acoustics Llc System and method for narrow bandwidth digital signal processing
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US9154862B2 (en) 2013-06-27 2015-10-06 The Boeing Company Flat panel loudspeaker system
US9014413B2 (en) 2013-08-21 2015-04-21 The Boeing Company Dual coil loudspeaker system
US9906858B2 (en) 2013-10-22 2018-02-27 Bongiovi Acoustics Llc System and method for digital signal processing
US9615813B2 (en) 2014-04-16 2017-04-11 Bongiovi Acoustics Llc. Device for wide-band auscultation
US10820883B2 (en) 2014-04-16 2020-11-03 Bongiovi Acoustics Llc Noise reduction assembly for auscultation of a body
US10639000B2 (en) 2014-04-16 2020-05-05 Bongiovi Acoustics Llc Device for wide-band auscultation
US9564146B2 (en) 2014-08-01 2017-02-07 Bongiovi Acoustics Llc System and method for digital signal processing in deep diving environment
US9638672B2 (en) 2015-03-06 2017-05-02 Bongiovi Acoustics Llc System and method for acquiring acoustic information from a resonating body
US9621994B1 (en) 2015-11-16 2017-04-11 Bongiovi Acoustics Llc Surface acoustic transducer
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US10959035B2 (en) 2018-08-02 2021-03-23 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
US10674270B2 (en) * 2018-10-24 2020-06-02 Google Llc Magnetic distributed mode actuators and distributed mode loudspeakers having the same
CN113676817B (en) * 2021-08-25 2023-08-25 江苏铁锚玻璃股份有限公司 Position placement method based on surface sounding and sounding components and surface sounding assembly

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Also Published As

Publication number Publication date
DE69106712T2 (en) 1995-06-08
GB2262861B (en) 1994-06-01
JP3034952B2 (en) 2000-04-17
EP0541646A1 (en) 1993-05-19
ATE117155T1 (en) 1995-01-15
GB2262861A (en) 1993-06-30
JP2000138994A (en) 2000-05-16
DK0541646T3 (en) 1995-03-20
GB9301628D0 (en) 1993-04-14
JP3084281B2 (en) 2000-09-04
EP0541646B1 (en) 1995-01-11
HK1000544A1 (en) 1998-04-03
JPH05509211A (en) 1993-12-16
WO1992003024A1 (en) 1992-02-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: QINETIQ LTD., LONDON, GB