GB1013643A - Loudspeaker - Google Patents

Loudspeaker

Info

Publication number
GB1013643A
GB1013643A GB9237/63A GB923763A GB1013643A GB 1013643 A GB1013643 A GB 1013643A GB 9237/63 A GB9237/63 A GB 9237/63A GB 923763 A GB923763 A GB 923763A GB 1013643 A GB1013643 A GB 1013643A
Authority
GB
United Kingdom
Prior art keywords
panel
speed
march
sound
per unit
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
Application number
GB9237/63A
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.)
Lord Manufacturing Co
Original Assignee
Lord Manufacturing Co
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
Application filed by Lord Manufacturing Co filed Critical Lord Manufacturing Co
Publication of GB1013643A publication Critical patent/GB1013643A/en
Expired 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
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/01—Acoustic transducers using travelling bending waves to generate or detect sound

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

1,013,643. Loudspeakers. LORD MANUFACTURING CO. March 8, 1963 [March 8, 1961], No. 9237/63. Heading H4J. A loudspeaker includes a voice coil 7 (Fig. 1) and magnet 5 together forming a drive assembly, a panel 10 of substantially uniform crosssection and means mechanically connecting the coil 7 to the panel 10 to bend the same, the ratio of the mass per unit area to the bending stiffness per unit width of the panel being such that the speed of the bending wave in the panel at a low base frequency is substantially equal to the speed of sound in air. Fairly efficient coupling can be obtained if the transverse bending wave speed is slightly below the speed of sound in air. The panel 10 preferably comprises a core 11 of paper honeycomb or foam material sandwiched between and bonded to steel skins 12, 13; the panel 10 is rigidly clamped at its periphery by being bolted or cemented to a rigid frame 14. Alternatively the panel 10 is peripherally mounted by springs (Fig. 4, not shown). The panel 10 may be part of an enclosure or cabinet for a record player, radio or television set or may be part of a wall or ceiling. The panel 10 may be of accordion shape, corrugated, bent or curved, provided it is of substantially uniform section.
GB9237/63A 1962-03-08 1963-03-08 Loudspeaker Expired GB1013643A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US178469A US3247925A (en) 1962-03-08 1962-03-08 Loudspeaker

Publications (1)

Publication Number Publication Date
GB1013643A true GB1013643A (en) 1965-12-15

Family

ID=22652656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9237/63A Expired GB1013643A (en) 1962-03-08 1963-03-08 Loudspeaker

Country Status (2)

Country Link
US (1) US3247925A (en)
GB (1) GB1013643A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428951A1 (en) * 1978-06-15 1980-01-11 Sony Corp LOUDSPEAKER AND MANUFACTURING METHOD
GB2370939A (en) * 2001-01-04 2002-07-10 New Transducers Ltd A curved or cylindrical bending wave loudspeaker panel

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US6181799B1 (en) * 1995-09-02 2001-01-30 New Transducers Limited Greetings or the like card
US6359991B1 (en) 1919-09-02 2002-03-19 New Transducers Limited Greetings or the like card
DE1299041B (en) * 1966-04-06 1969-07-10 Nippon Gakki Co Ltd Seizo Kabu Membrane for flat speaker
US3422921A (en) * 1966-04-25 1969-01-21 Lord Corp Sound attenuating wall for blocking transmission of intelligible speech
GB1122698A (en) * 1966-05-03 1968-08-07 Nippon Musical Instruments Mfg Loudspeaker with asymmetrically shaped diaphragm
US3483946A (en) * 1967-12-30 1969-12-16 Nippon Musical Instruments Mfg Loudspeaker
US3603427A (en) * 1968-11-19 1971-09-07 Nippon Musical Instruments Mfg Loudspeaker
GB1289858A (en) * 1968-12-30 1972-09-20
JPS4974233U (en) * 1972-10-13 1974-06-27
JPS4964417A (en) * 1972-10-20 1974-06-21
US4473906A (en) * 1980-12-05 1984-09-25 Lord Corporation Active acoustic attenuator
US6247551B1 (en) 1990-08-04 2001-06-19 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Panel-form loudspeaker
US6058196A (en) * 1990-08-04 2000-05-02 The Secretary Of State For Defense In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Panel-form loudspeaker
US5732143A (en) * 1992-10-29 1998-03-24 Andrea Electronics Corp. Noise cancellation apparatus
US6304661B1 (en) 1995-09-02 2001-10-16 New Transducers Limited Loudspeakers comprising panel-form acoustic radiating elements
HUP9900177A3 (en) * 1995-09-02 2001-08-28 New Transducers Ltd Greetings or the like card
CA2230053A1 (en) * 1995-09-02 1997-03-13 Martin Colloms Loudspeakers comprising panel-form acoustic radiating elements
ATE177577T1 (en) * 1995-09-02 1999-03-15 New Transducers Ltd PASSENGER CAR WITH SPEAKERS WITH PANEL-SHAPED ACOUSTIC RADIATION ELEMENTS
HUP9903875A2 (en) * 1995-09-02 2000-03-28 New Transducers Limited Visual display means incorporating loudspeakers
US6215881B1 (en) * 1995-09-02 2001-04-10 New Transducers Limited Ceiling tile loudspeaker
UA51671C2 (en) * 1995-09-02 2002-12-16 Нью Транзд'Юсез Лімітед Acoustic device
KR100419334B1 (en) * 1995-09-02 2004-05-31 뉴 트랜스듀서스 리미티드 Sound system
US6266426B1 (en) * 1995-09-02 2001-07-24 New Transducers Limited Visual display means incorporating loudspeakers
EA002108B1 (en) * 1995-09-02 2001-12-24 Нью Трэнсдьюсерз Лимитед Loudspeaker comprising panel-form acoustic radiating elements
ATE177579T1 (en) * 1995-09-02 1999-03-15 New Transducers Ltd DISPLAY SCREENS CONTAINING SPEAKERS
ES2131954T3 (en) * 1995-09-02 1999-08-01 New Transducers Ltd PACKAGING BOX.
RO119051B1 (en) * 1995-09-02 2004-02-27 Verityágroupáplc Laptop-type portable computer
EP0847678B1 (en) * 1995-09-02 1999-04-21 New Transducers Limited Panel-form microphones
TR199800364T1 (en) * 1995-09-02 1998-05-21 New Transducers Limited Plays a portable compact disc (CD).
CA2230461A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Panel-form loudspeakers
CZ58198A3 (en) * 1995-09-02 1998-07-15 New Transducers Limited Musical instrument with built-in loudspeakers
ATE179043T1 (en) * 1995-09-02 1999-04-15 New Transducers Ltd SPEAKER WITH PANEL-SHAPED SOUND EMITTING ELEMENTS
AU704227B2 (en) * 1995-09-02 1999-04-15 New Transducers Limited Noticeboards incorporating loudspeakers
ATE179563T1 (en) * 1995-09-02 1999-05-15 New Transducers Ltd SPEAKER WITH PANEL-SHAPED ACOUSTIC RADIATION ELEMENTS
US6169809B1 (en) * 1996-09-02 2001-01-02 New Transducers Limited Visual display means incorporating loudspeakers
GB9822246D0 (en) * 1998-10-13 1998-12-09 New Transducers Ltd Loudspeakers
US6324294B1 (en) 1996-09-03 2001-11-27 New Transducers Limited Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
US6546106B2 (en) * 1996-09-03 2003-04-08 New Transducers Limited Acoustic device
US6278787B1 (en) 1996-09-03 2001-08-21 New Transducers Limited Loudspeakers
US6606390B2 (en) * 1996-09-03 2003-08-12 New Transducer Limited Loudspeakers
US6522760B2 (en) 1996-09-03 2003-02-18 New Transducers Limited Active acoustic devices
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
US6956957B1 (en) * 1997-01-09 2005-10-18 New Transducers Limited Loudspeakers
EP1010351A1 (en) * 1997-09-04 2000-06-21 New Transducers Limited Loudspeakers
JP4317957B2 (en) * 1998-01-16 2009-08-19 ソニー株式会社 Speaker device and electronic device incorporating speaker device
TR200002108T2 (en) * 1998-01-20 2000-11-21 New Transducers Limited Active acoustic devices containing panel elements.
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.
DE19821855A1 (en) * 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Flat panel loudspeaker
GB9812225D0 (en) * 1998-06-05 1998-08-05 Medicine Acoustic devices
DE19825866A1 (en) * 1998-06-10 1999-12-16 Nokia Deutschland Gmbh Record speakers
CA2336072A1 (en) 1998-06-22 1999-12-29 Slab Technology Limited Loudspeakers
GB9905038D0 (en) 1999-03-05 1999-04-28 New Transducers Ltd Loudpeakers
DE69911961T2 (en) * 1998-07-03 2004-07-29 New Transducers Ltd. PLATE-SHAPED RESONANT SPEAKER
DE19843079A1 (en) * 1998-09-19 2000-03-23 Nokia Deutschland Gmbh Multi-resonance plate
WO2000041437A2 (en) 1999-01-06 2000-07-13 Iroquois Holding Co., Inc. Speaker system
US6363345B1 (en) 1999-02-18 2002-03-26 Andrea Electronics Corporation System, method and apparatus for cancelling noise
GB2349034A (en) * 1999-04-16 2000-10-18 Hosiden Besson Ltd Supporting surround for active panel of distributed mode speaker
US6590993B2 (en) * 1999-09-06 2003-07-08 Koninklijke Philips Electronics N.V. Panel-shaped loudspeaker
DE19944802C2 (en) * 1999-09-20 2003-08-28 Harman Audio Electronic Sys door
US6594367B1 (en) 1999-10-25 2003-07-15 Andrea Electronics Corporation Super directional beamforming design and implementation
TW498698B (en) * 2000-05-08 2002-08-11 Koninkl Philips Electronics Nv Loudspeaker having an acoustic panel and an electrical driver
DE10030746B4 (en) * 2000-06-23 2008-11-20 Lisa Dräxlmaier GmbH Interior trim part for vehicles and method for producing the same
EP1170977A1 (en) * 2000-07-04 2002-01-09 Tai-Yan Kam Laminated composite panel-form loudspeaker
US8103024B2 (en) * 2000-09-20 2012-01-24 Harman Becker Automotive Systems Gmbh Door with structural components configured to radiate acoustic energy
DE10058102C2 (en) * 2000-11-23 2003-07-03 Harman Audio Electronic Sys Electrodynamic bending moment driver
US6577742B1 (en) * 2001-05-24 2003-06-10 Paul F. Bruney Membrane support system
FI20011303A (en) * 2001-06-19 2002-12-20 Nokia Corp Speaker
SE524284C2 (en) * 2002-04-18 2004-07-20 A2 Acoustics Ab Device for driving a diaphragm arranged in an opening to a space and vehicles comprising a device for driving a diaphragm arranged in an opening of the vehicle
DE10238325A1 (en) * 2002-08-16 2004-03-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. speaker
KR100698256B1 (en) * 2004-07-16 2007-03-22 엘지전자 주식회사 A Speaker Equipment using Display Window
US7570775B2 (en) * 2004-09-16 2009-08-04 Sony Corporation Microelectromechanical speaker
US7650003B1 (en) * 2004-12-15 2010-01-19 Hines L Duwayne Flat panel speaker and components therefor
WO2007023409A2 (en) * 2005-08-22 2007-03-01 Philips Intellectual Property & Standards Gmbh Acoustic light-emitting device
US20070147650A1 (en) * 2005-12-07 2007-06-28 Lee Sung Q Microphone and speaker having plate spring structure and speech recognition/synthesizing device using the microphone and the speaker
DE102009048866A1 (en) 2009-08-27 2011-03-03 Bösnecker, Robert, Dr. Device for vibration stimulation of diaphragms or diaphragm-type materials showing frequencies in audio range of humans, has electrical change signal partly converted in mechanical motion, where converter possess hole or opening
FR2964761B1 (en) * 2010-09-14 2012-08-31 Thales Sa HAPTIC INTERACTION DEVICE AND METHOD FOR GENERATING HAPTIC AND SOUND EFFECTS
JP6720148B2 (en) * 2014-09-19 2020-07-08 コーニング インコーポレイテッド Thin panel loudspeaker
US10631091B1 (en) 2019-02-28 2020-04-21 Google Llc Bending actuators and panel audio loudspeakers including the same

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US1763052A (en) * 1926-03-23 1930-06-10 Hopkins Corp Loud-speaker
US1773910A (en) * 1926-09-30 1930-08-26 Bell Telephone Labor Inc Sound radiator
US1767777A (en) * 1926-10-15 1930-06-24 Adolph A Thomas Loud-speaker
US1735860A (en) * 1927-04-01 1929-11-19 Acoustic Products Company Flexed sounding board
GB323539A (en) * 1928-10-04 1930-01-06 George Rex Searle Improvements in or relating to diaphragms for loud-speakers and like instruments
US2010352A (en) * 1929-11-22 1935-08-06 Puy Richard R Du Speaker cone
US2063944A (en) * 1932-02-09 1936-12-15 George W Pierce Direction, transmission, and reception method and system
BE407715A (en) * 1932-08-30
US2063945A (en) * 1933-08-02 1936-12-15 Pierce George Washington Diaphragm and method
US2744042A (en) * 1951-06-21 1956-05-01 Goodyear Tire & Rubber Laminated panels
US3032136A (en) * 1956-09-27 1962-05-01 Jr Andrew Stewart Hegeman Loudspeaker
GB931080A (en) * 1959-03-24 1963-07-10 Bolt Beranek & Newman Vibrational radiating or receiving apparatus
US3111187A (en) * 1959-11-23 1963-11-19 H J Leak & Company Ltd Diaphragm for electro acoustic transducer
US3115947A (en) * 1962-02-23 1963-12-31 Warren R Wood High fidelity sound reproducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428951A1 (en) * 1978-06-15 1980-01-11 Sony Corp LOUDSPEAKER AND MANUFACTURING METHOD
GB2370939A (en) * 2001-01-04 2002-07-10 New Transducers Ltd A curved or cylindrical bending wave loudspeaker panel

Also Published As

Publication number Publication date
US3247925A (en) 1966-04-26

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