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
Publication of DE69106712D1 publication Critical patent/DE69106712D1/en
Application granted granted Critical
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

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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ES2131957T3 (en) * 1995-09-02 1999-08-01 New Transducers Ltd SPEAKERS WHICH ARE COMPOSED OF ACOUSTIC RADIATION ELEMENTS IN THE FORM OF A PANEL.
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US6546106B2 (en) 1996-09-03 2003-04-08 New Transducers Limited Acoustic device
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GB9806994D0 (en) * 1998-04-02 1998-06-03 New Transducers Ltd Acoustic device
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DE69804199T2 (en) * 1997-01-09 2002-07-18 New Transducers Ltd SPEAKER
GB9709959D0 (en) * 1997-05-15 1997-07-09 New Transducers Ltd Panel-form loudspeakers
EP1010351A1 (en) * 1997-09-04 2000-06-21 New Transducers Limited Loudspeakers
CN101031162B (en) * 1998-01-16 2012-09-05 索尼公司 Speaker apparatus
IL136820A0 (en) * 1998-01-20 2001-06-14 New Transducers Ltd 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
GB9812225D0 (en) * 1998-06-05 1998-08-05 Medicine Acoustic devices
DE19825866A1 (en) * 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
CZ20004748A3 (en) 1998-06-22 2001-12-12 Slab Technology Limited Loud speakers
GB9905038D0 (en) 1999-03-05 1999-04-28 New Transducers Ltd Loudpeakers
CA2336271A1 (en) 1998-07-03 2000-01-13 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
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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
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US8144380B2 (en) * 2002-09-26 2012-03-27 Seiko Epson Corporation Drive mechanism
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
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
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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
US10848867B2 (en) 2006-02-07 2020-11-24 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
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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
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
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Also Published As

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

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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