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ATE117155T1 - PANEL-SHAPED SPEAKER. - Google Patents

PANEL-SHAPED SPEAKER.

Info

Publication number
ATE117155T1
ATE117155T1 AT91914046T AT91914046T ATE117155T1 AT E117155 T1 ATE117155 T1 AT E117155T1 AT 91914046 T AT91914046 T AT 91914046T AT 91914046 T AT91914046 T AT 91914046T AT E117155 T1 ATE117155 T1 AT E117155T1
Authority
AT
Austria
Prior art keywords
panel
skinned
aluminium
motions
composite
Prior art date
Application number
AT91914046T
Other languages
German (de)
Inventor
Kenneth Harry Heron
Original Assignee
Secr Defence Brit
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 Secr Defence Brit filed Critical Secr Defence Brit
Application granted granted Critical
Publication of ATE117155T1 publication Critical patent/ATE117155T1/en

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>
AT91914046T 1990-08-04 1991-07-26 PANEL-SHAPED SPEAKER. ATE117155T1 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
ATE117155T1 true ATE117155T1 (en) 1995-01-15

Family

ID=26297455

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91914046T ATE117155T1 (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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HUP9903879A2 (en) * 1995-09-02 2000-03-28 New Transducers Limited Personal computers
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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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US6282298B1 (en) 1996-09-03 2001-08-28 New Transducers Limited Acoustic device
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US6546106B2 (en) 1996-09-03 2003-04-08 New Transducers Limited Acoustic device
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ATE214535T1 (en) * 1997-01-09 2002-03-15 New Transducers Ltd SPEAKER
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
EP2178307B1 (en) * 1998-01-16 2013-11-27 Sony Corporation Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein
CN1287766B (en) * 1998-01-20 2010-06-23 新型转换器有限公司 Active acoustic devices comprising panel members
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
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DE19825866A1 (en) 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
IL140304A0 (en) 1998-06-22 2002-02-10 Slab Technology Ltd Loudspeakers
AU754818B2 (en) 1998-07-03 2002-11-28 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
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US6826285B2 (en) 2000-08-03 2004-11-30 New Transducers Limited Bending wave loudspeaker
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US11431312B2 (en) 2004-08-10 2022-08-30 Bongiovi Acoustics Llc System and method for digital signal processing
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US10848118B2 (en) 2004-08-10 2020-11-24 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
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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
US10848867B2 (en) 2006-02-07 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10069471B2 (en) 2006-02-07 2018-09-04 Bongiovi Acoustics Llc System and method for digital signal processing
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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
US10820883B2 (en) 2014-04-16 2020-11-03 Bongiovi Acoustics Llc Noise reduction assembly for auscultation of a body
US9615813B2 (en) 2014-04-16 2017-04-11 Bongiovi Acoustics Llc. Device for wide-band auscultation
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
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Also Published As

Publication number Publication date
DK0541646T3 (en) 1995-03-20
JP3084281B2 (en) 2000-09-04
WO1992003024A1 (en) 1992-02-20
JP2000138994A (en) 2000-05-16
GB9301628D0 (en) 1993-04-14
JP3034952B2 (en) 2000-04-17
EP0541646A1 (en) 1993-05-19
EP0541646B1 (en) 1995-01-11
GB2262861A (en) 1993-06-30
GB2262861B (en) 1994-06-01
HK1000544A1 (en) 1998-04-03
DE69106712T2 (en) 1995-06-08
JPH05509211A (en) 1993-12-16
DE69106712D1 (en) 1995-02-23

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EELA Cancelled due to lapse of time