GB2262861B - Panel-form loudspeaker - Google Patents

Panel-form loudspeaker

Info

Publication number
GB2262861B
GB2262861B GB9301628A GB9301628A GB2262861B GB 2262861 B GB2262861 B GB 2262861B GB 9301628 A GB9301628 A GB 9301628A GB 9301628 A GB9301628 A GB 9301628A GB 2262861 B GB2262861 B GB 2262861B
Authority
GB
United Kingdom
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.)
Revoked
Application number
GB9301628A
Other versions
GB9301628D0 (en
GB2262861A (en
Inventor
Kenneth Harry 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.)
UK Secretary of State for Defence
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
Publication of GB9301628D0 publication Critical patent/GB9301628D0/en
Publication of GB2262861A publication Critical patent/GB2262861A/en
Application granted granted Critical
Publication of GB2262861B publication Critical patent/GB2262861B/en
Anticipated expiration legal-status Critical
Revoked 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)
  • Laminated Bodies (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (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>
GB9301628A 1990-08-04 1993-01-27 Panel-form loudspeaker Revoked GB2262861B (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 (3)

Publication Number Publication Date
GB9301628D0 GB9301628D0 (en) 1993-04-14
GB2262861A GB2262861A (en) 1993-06-30
GB2262861B true GB2262861B (en) 1994-06-01

Family

ID=26297455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9301628A Revoked GB2262861B (en) 1990-08-04 1993-01-27 Panel-form loudspeaker

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6332029B1 (en) 1995-09-02 2001-12-18 New Transducers Limited Acoustic device

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US6359991B1 (en) 1919-09-02 2002-03-19 New Transducers Limited Greetings or the like card
GB9410281D0 (en) * 1994-05-20 1994-07-13 Moonstone Technology Ltd Through glass speaker
UA51671C2 (en) * 1995-09-02 2002-12-16 Нью Транзд'Юсез Лімітед Acoustic device
US6151402A (en) * 1995-09-02 2000-11-21 New Transducers Limited Vibration transducers
EA000619B1 (en) * 1995-09-02 1999-12-29 Нью Трэнсдьюсерз Лимитед Display screens incorporating loudspeakers
PL325285A1 (en) * 1995-09-02 1998-07-20 New Transducers Ltd Crt display unit with loudspeakers
CA2230438A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Loudspeakers with panel-form acoustic radiating elements
WO1997009846A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Panel-form loudspeakers
ATE179045T1 (en) * 1995-09-02 1999-04-15 New Transducers Ltd INERTIAL VIBRATION TRANSDUCER
CZ57898A3 (en) * 1995-09-02 1998-07-15 New Transducers Limited Personal computer
CZ58198A3 (en) * 1995-09-02 1998-07-15 New Transducers Limited Musical instrument with built-in loudspeakers
BR9610426A (en) * 1995-09-02 1999-12-21 New Transducers Ltd Notice boards incorporating speakers
AU702873B2 (en) * 1995-09-02 1999-03-11 New Transducers Limited Packaging
US6003766A (en) 1995-09-02 1999-12-21 New Transducers Limited Vending machine
IL123480A (en) * 1995-09-02 2000-10-31 New Transducers Ltd Portable compact disc player
CA2230702A1 (en) * 1995-09-02 1997-03-13 Verity Group Plc Loudspeakers comprising panel-form acoustic radiating elements
ES2130849T3 (en) * 1995-09-02 1999-07-01 New Transducers Ltd A VENDING MACHINE.
EA000929B1 (en) * 1995-09-02 2000-06-26 Нью Трэнсдьюсерз Лимитед Pannel-form loudspeakers
IL123487A (en) * 1995-09-02 2001-11-25 New Transducers Ltd Loudspeakers comprising panel-form acoustic radiating elements
WO1997009843A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
ATE179297T1 (en) * 1995-09-02 1999-05-15 New Transducers Ltd PANEL-SHAPED MICROPHONES
HUP9900177A3 (en) * 1995-09-02 2001-08-28 New Transducers Ltd Greetings or the like card
HUP9903873A3 (en) * 1995-09-02 2002-09-30 New Transducers Ltd Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
CN1164144C (en) * 1995-09-02 2004-08-25 新型转换器有限公司 Inertial vibrative transducer
US6519349B1 (en) 1995-09-02 2003-02-11 New Transducers Limited Loudspeaker
US6327369B1 (en) * 1995-09-02 2001-12-04 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
US6304661B1 (en) 1995-09-02 2001-10-16 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
ATE177583T1 (en) * 1995-09-02 1999-03-15 New Transducers Ltd VIBRATION TRANSDUCER
US6266426B1 (en) 1995-09-02 2001-07-24 New Transducers Limited Visual display means incorporating loudspeakers
US6282298B1 (en) 1996-09-03 2001-08-28 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
GB9806994D0 (en) * 1998-04-02 1998-06-03 New Transducers Ltd Acoustic device
GB9818959D0 (en) * 1998-09-02 1998-10-21 New Transducers Ltd Panelform loudspeaker
US6522760B2 (en) 1996-09-03 2003-02-18 New Transducers Limited Active acoustic devices
US6546106B2 (en) 1996-09-03 2003-04-08 New Transducers Limited Acoustic device
GB9704486D0 (en) * 1997-03-04 1997-04-23 New Transducers Ltd Acoustic devices etc
GB2320393A (en) * 1996-12-11 1998-06-17 Secr Defence Panel form loudspeaker
US6956957B1 (en) * 1997-01-09 2005-10-18 New Transducers Limited Loudspeakers
GB9709959D0 (en) * 1997-05-15 1997-07-09 New Transducers Ltd Panel-form loudspeakers
CA2297041A1 (en) * 1997-09-04 1999-03-11 Graham Bank Loudspeakers
EP0969691B1 (en) * 1998-01-16 2012-06-13 Sony Corporation Speaker and electronic apparatus using speaker
AU2002300608B2 (en) * 1998-01-20 2005-10-06 New Transducers Limited Active Acoustic Devices Comprising Panel Members
KR100646191B1 (en) * 1998-01-20 2006-11-17 뉴 트랜스듀서스 리미티드 Active acoustic devices comprising panel members
TW450011B (en) 1998-02-10 2001-08-11 New Transducers Ltd Acoustic devices
DE19818988A1 (en) * 1998-04-28 1999-11-11 Siemens Ag Electronic apparatus with electro-acoustic transducer e.g. for mobile telephone
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.
GB9812225D0 (en) * 1998-06-05 1998-08-05 Medicine Acoustic devices
DE19825866A1 (en) 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
DK1120007T3 (en) 1998-06-22 2005-12-12 Slab Technology Ltd speakers
CA2336271A1 (en) 1998-07-03 2000-01-13 New Transducers Limited Resonant panel-form loudspeaker
GB9905038D0 (en) 1999-03-05 1999-04-28 New Transducers Ltd Loudpeakers
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
US6826285B2 (en) 2000-08-03 2004-11-30 New Transducers Limited Bending wave loudspeaker
GB0018996D0 (en) 2000-08-03 2000-09-20 New Transducers Ltd Bending wave loudspeaker
GB0102865D0 (en) 2001-02-06 2001-03-21 Secr Defence Brit Panel form loudspeaker
CN1685760B (en) * 2002-09-26 2011-04-13 精工爱普生株式会社 Drive mechanism
US10158337B2 (en) 2004-08-10 2018-12-18 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
US11431312B2 (en) 2004-08-10 2022-08-30 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
US10069471B2 (en) 2006-02-07 2018-09-04 Bongiovi Acoustics Llc System and method for digital signal processing
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
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
US10639000B2 (en) 2014-04-16 2020-05-05 Bongiovi Acoustics Llc Device for wide-band auscultation
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
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
JP2018537910A (en) 2015-11-16 2018-12-20 ボンジョビ アコースティックス リミテッド ライアビリティー カンパニー Surface acoustic transducer
US9621994B1 (en) 2015-11-16 2017-04-11 Bongiovi Acoustics Llc Surface acoustic transducer
US11211043B2 (en) 2018-04-11 2021-12-28 Bongiovi Acoustics Llc Audio enhanced hearing protection system
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

Citations (6)

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Publication number Priority date Publication date Assignee Title
US3272281A (en) * 1964-12-04 1966-09-13 Harvey M Rutter Transducer
FR2408168A1 (en) * 1977-11-07 1979-06-01 Ebauches Sa WATCH INCLUDING AN ELECTRO-MECHANICAL TRANSDUCER
GB2010637A (en) * 1977-11-26 1979-06-27 Sony Corp Diaphragm for loudspeaker
GB2023375A (en) * 1978-06-15 1979-12-28 Sony Corp Loudspeakers and methods of making loudspeakers
GB2115646A (en) * 1982-02-19 1983-09-07 Lahroy Alward White Loudspeaker enclosure
EP0114910A1 (en) * 1983-01-28 1984-08-08 Intersonics Incorporated Subwoofer speaker system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272281A (en) * 1964-12-04 1966-09-13 Harvey M Rutter Transducer
FR2408168A1 (en) * 1977-11-07 1979-06-01 Ebauches Sa WATCH INCLUDING AN ELECTRO-MECHANICAL TRANSDUCER
GB2010637A (en) * 1977-11-26 1979-06-27 Sony Corp Diaphragm for loudspeaker
GB2023375A (en) * 1978-06-15 1979-12-28 Sony Corp Loudspeakers and methods of making loudspeakers
GB2115646A (en) * 1982-02-19 1983-09-07 Lahroy Alward White Loudspeaker enclosure
EP0114910A1 (en) * 1983-01-28 1984-08-08 Intersonics Incorporated Subwoofer speaker system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Journal of The Acoustical Society of America, Vol.72, No.6, October 1982, pages 1863-1869 *
Journal of The Acoustical Society of America, Vol.73, No.1, January 1983, pages 345-351 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6332029B1 (en) 1995-09-02 2001-12-18 New Transducers Limited Acoustic device
US6904154B2 (en) 1995-09-02 2005-06-07 New Transducers Limited Acoustic device
US7158647B2 (en) 1995-09-02 2007-01-02 New Transducers Limited Acoustic device
US7194098B2 (en) 1995-09-02 2007-03-20 New Transducers Limited Acoustic device

Also Published As

Publication number Publication date
DE69106712T2 (en) 1995-06-08
EP0541646A1 (en) 1993-05-19
WO1992003024A1 (en) 1992-02-20
JPH05509211A (en) 1993-12-16
DE69106712D1 (en) 1995-02-23
ATE117155T1 (en) 1995-01-15
JP3084281B2 (en) 2000-09-04
HK1000544A1 (en) 1998-04-03
GB9301628D0 (en) 1993-04-14
GB2262861A (en) 1993-06-30
JP2000138994A (en) 2000-05-16
EP0541646B1 (en) 1995-01-11
DK0541646T3 (en) 1995-03-20
JP3034952B2 (en) 2000-04-17

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Legal Events

Date Code Title Description
773K Patent revoked under sect. 73(2)/1977