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GB9301628D0 - Panel-form loudspeaker - Google Patents

Panel-form loudspeaker

Info

Publication number
GB9301628D0
GB9301628D0 GB939301628A GB9301628A GB9301628D0 GB 9301628 D0 GB9301628 D0 GB 9301628D0 GB 939301628 A GB939301628 A GB 939301628A GB 9301628 A GB9301628 A GB 9301628A GB 9301628 D0 GB9301628 D0 GB 9301628D0
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.)
Granted
Application number
GB939301628A
Other versions
GB2262861B (en
GB2262861A (en
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)
  • 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>
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 true GB9301628D0 (en) 1993-04-14
GB2262861A GB2262861A (en) 1993-06-30
GB2262861B 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)

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JP4342609B2 (en) * 1995-09-02 2009-10-14 ニュー トランスデューサーズ リミテッド Loudspeaker built-in passenger vehicle consisting of panel-like acoustic radiating elements
US6304661B1 (en) 1995-09-02 2001-10-16 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
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ATE177574T1 (en) * 1995-09-02 1999-03-15 New Transducers Ltd LOUDSPEAKER WITH PLATE-SHAPED RADIATION ELEMENTS
ES2131410T3 (en) * 1995-09-02 1999-07-16 New Transducers Ltd BOARDS FOR NOTICES THAT INCLUDE SPEAKERS.
ES2131409T3 (en) * 1995-09-02 1999-07-16 New Transducers Ltd SPEAKER WITH PANEL SHAPE.
US6151402A (en) * 1995-09-02 2000-11-21 New Transducers Limited Vibration transducers
JPH11512245A (en) * 1995-09-02 1999-10-19 ニュー トランスデューサーズ リミテッド Display screen incorporating loudspeakers
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US6327369B1 (en) * 1995-09-02 2001-12-04 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
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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
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
GB2320393A (en) * 1996-12-11 1998-06-17 Secr Defence Panel form loudspeaker
NZ336071A (en) * 1997-01-09 2000-08-25 New Transducers Ltd Loudspeaker with resonant radiator having exciter to apply bending waves to radiator which is resiliently coupled to support
GB9709959D0 (en) * 1997-05-15 1997-07-09 New Transducers Ltd Panel-form loudspeakers
WO1999012387A1 (en) * 1997-09-04 1999-03-11 New Transducers Limited Loudspeakers
EP0969691B1 (en) * 1998-01-16 2012-06-13 Sony Corporation Speaker and electronic apparatus using speaker
TR200002108T2 (en) * 1998-01-20 2000-11-21 New Transducers Limited Active acoustic devices containing panel elements.
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
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
ES2251198T3 (en) 1998-06-22 2006-04-16 Slab Technology Limited SPEAKERS.
GB9905038D0 (en) 1999-03-05 1999-04-28 New Transducers Ltd Loudpeakers
EA200100102A1 (en) 1998-07-03 2001-06-25 Нью Трэнсдьюсерз Лимитед SPEAKER WITH A PANEL-SHAPED RESONATOR
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
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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
WO2004030407A2 (en) * 2002-09-26 2004-04-08 Seiko Epson Corporation Drive mechanism
US8284955B2 (en) 2006-02-07 2012-10-09 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
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
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
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
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
US8100226B2 (en) * 2009-12-22 2012-01-24 Usg Interiors, Inc. Porous nonwoven scrims in acoustical panels
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US9264004B2 (en) 2013-06-12 2016-02-16 Bongiovi Acoustics Llc System and method for narrow bandwidth digital signal processing
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
WO2017087495A1 (en) 2015-11-16 2017-05-26 Bongiovi Acoustics Llc Surface acoustic transducer
US9621994B1 (en) 2015-11-16 2017-04-11 Bongiovi Acoustics Llc Surface acoustic transducer
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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
JP3084281B2 (en) 2000-09-04
GB2262861B (en) 1994-06-01
WO1992003024A1 (en) 1992-02-20
EP0541646A1 (en) 1993-05-19
DE69106712T2 (en) 1995-06-08
JP3034952B2 (en) 2000-04-17
JPH05509211A (en) 1993-12-16
EP0541646B1 (en) 1995-01-11
ATE117155T1 (en) 1995-01-15
DE69106712D1 (en) 1995-02-23
HK1000544A1 (en) 1998-04-03
GB2262861A (en) 1993-06-30
DK0541646T3 (en) 1995-03-20
JP2000138994A (en) 2000-05-16

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Legal Events

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