[go: up one dir, main page]

WO2001005189A3 - Bending wave panel speaker and method of driving such a speaker - Google Patents

Bending wave panel speaker and method of driving such a speaker Download PDF

Info

Publication number
WO2001005189A3
WO2001005189A3 PCT/GB2000/002422 GB0002422W WO0105189A3 WO 2001005189 A3 WO2001005189 A3 WO 2001005189A3 GB 0002422 W GB0002422 W GB 0002422W WO 0105189 A3 WO0105189 A3 WO 0105189A3
Authority
WO
WIPO (PCT)
Prior art keywords
panel
speaker
driving
bending wave
bending waves
Prior art date
Application number
PCT/GB2000/002422
Other languages
French (fr)
Other versions
WO2001005189A2 (en
Inventor
Graham Bank
Original Assignee
New Transducers Ltd
Graham Bank
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 New Transducers Ltd, Graham Bank filed Critical New Transducers Ltd
Priority to AU56919/00A priority Critical patent/AU5691900A/en
Priority to EP00942211A priority patent/EP1197120B1/en
Priority to JP2001510270A priority patent/JP2003504981A/en
Priority to NZ515485A priority patent/NZ515485A/en
Priority to DE60004678T priority patent/DE60004678T2/en
Publication of WO2001005189A2 publication Critical patent/WO2001005189A2/en
Publication of WO2001005189A3 publication Critical patent/WO2001005189A3/en
Priority to IL14677001A priority patent/IL146770A0/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

A loudspeaker is made of a panel (1) supporting bending waves and a transducer (3) covering a substantial portion of the panel surface. At least one constraint, for example a clamp or a mass, is fixed to the panel. Each constraint reduces the mobility of a small area of the panel. Excitation of the transducer excites bending waves in the panel; the constraints discourage simple motion and encourage the production of a plurality of bending waves instead. The constraints can constrain the panel to be excited to produce a good distribution of resonant bending wave modes.
PCT/GB2000/002422 1999-07-08 2000-07-06 Bending wave panel speaker and method of driving such a speaker WO2001005189A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU56919/00A AU5691900A (en) 1999-07-08 2000-07-06 Panel drive
EP00942211A EP1197120B1 (en) 1999-07-08 2000-07-06 Bending wave panel speaker and method of driving such a speaker
JP2001510270A JP2003504981A (en) 1999-07-08 2000-07-06 Panel drive
NZ515485A NZ515485A (en) 1999-07-08 2000-07-06 Bending wave loudspeaker with a constraint coupled to a discrete region of the panel to which a transducer is also coupled
DE60004678T DE60004678T2 (en) 1999-07-08 2000-07-06 BENDING SHAFT DISC SPEAKER AND METHOD FOR OPERATING THE SAME
IL14677001A IL146770A0 (en) 1999-07-08 2001-07-06 Panel drive

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9916091.3 1999-07-08
GBGB9916091.3A GB9916091D0 (en) 1999-07-08 1999-07-08 Panel drive

Publications (2)

Publication Number Publication Date
WO2001005189A2 WO2001005189A2 (en) 2001-01-18
WO2001005189A3 true WO2001005189A3 (en) 2001-05-10

Family

ID=10856928

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/002422 WO2001005189A2 (en) 1999-07-08 2000-07-06 Bending wave panel speaker and method of driving such a speaker

Country Status (10)

Country Link
EP (1) EP1197120B1 (en)
JP (1) JP2003504981A (en)
CN (1) CN1358400A (en)
AU (1) AU5691900A (en)
DE (1) DE60004678T2 (en)
GB (1) GB9916091D0 (en)
IL (1) IL146770A0 (en)
NZ (1) NZ515485A (en)
TW (1) TW490987B (en)
WO (1) WO2001005189A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0022913D0 (en) * 2000-09-19 2000-11-01 New Transducers Ltd Loudspeaker
GB0029098D0 (en) * 2000-11-30 2001-01-10 New Transducers Ltd Vibration transducer
US6839444B2 (en) 2000-11-30 2005-01-04 New Transducers Limited Loudspeakers
GB0111003D0 (en) * 2001-05-04 2001-06-27 New Transducers Ltd Electrostrictive transducer and method of manufacture thereof
US6988339B2 (en) 2002-02-06 2006-01-24 Andersen Corporation Specialty media window
US7426804B2 (en) 2002-02-06 2008-09-23 Andersen Corporation Specialty display window
EP1385354A1 (en) * 2002-07-25 2004-01-28 Kam, Tai-Yan Transparent panel-form loudspeaker
GB0414082D0 (en) * 2004-06-24 2004-07-28 New Transducers Ltd Bending wave devices
JP2008509587A (en) * 2004-08-06 2008-03-27 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Panel acoustic transducer and actuator for generating and / or recording sound having an actuator for operating the panel
KR101704517B1 (en) * 2016-03-28 2017-02-09 엘지디스플레이 주식회사 Display device for generating sound by panel vibration type
US10412500B2 (en) 2016-03-28 2019-09-10 Lg Display Co., Ltd. Actuator fixing device and panel vibration type sound-generating display device including the same
GB2560878B (en) 2017-02-24 2021-10-27 Google Llc A panel loudspeaker controller and a panel loudspeaker
US10782731B1 (en) * 2019-02-28 2020-09-22 Google Llc Modal frequency shifting for loudspeaker devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
US5901231A (en) * 1995-09-25 1999-05-04 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
US5901231A (en) * 1995-09-25 1999-05-04 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems

Also Published As

Publication number Publication date
DE60004678D1 (en) 2003-09-25
JP2003504981A (en) 2003-02-04
IL146770A0 (en) 2002-07-25
GB9916091D0 (en) 1999-09-08
TW490987B (en) 2002-06-11
WO2001005189A2 (en) 2001-01-18
AU5691900A (en) 2001-01-30
CN1358400A (en) 2002-07-10
NZ515485A (en) 2002-05-31
EP1197120A2 (en) 2002-04-17
EP1197120B1 (en) 2003-08-20
DE60004678T2 (en) 2004-07-08

Similar Documents

Publication Publication Date Title
WO2001005189A3 (en) Bending wave panel speaker and method of driving such a speaker
EP1100289A8 (en) Electroacoustic transducer, process of producing the same and electroacoustic transducing device using the same
WO2001054450A3 (en) Transducer in particularly for use in acoustic devices
IL140997A0 (en) Loudspeaker drive unit having a resonant panel-form member
TW428415B (en) Panel-form loudspeakers
AU7601500A (en) Method of forming parylene-diaphragm piezoelectric acoustic transducers
ES2132953T3 (en) PANEL SHAPED SPEAKERS.
ATE205993T1 (en) VIBRATION TRANSDUCER FOR RESONANT PLATE SPEAKER AND SPEAKER EQUIPPED THEREFROM
DE69601723D1 (en) SPEAKER WITH PANEL-SHAPED RADIATION ELEMENTS
IL141634A0 (en) Panel form acoustic apparatus using bending waves modes
EP1173100A4 (en) Apparatus and method for tuning ultrasonic transducers
CN1245628A (en) Panel-form loadspeaker
AU4856500A (en) Acoustic transducer and method of making the same
PL325272A1 (en) Loudspeaker with an acoustic plate-type radiator
GB2403867A (en) Transducer
ATE179563T1 (en) SPEAKER WITH PANEL-SHAPED ACOUSTIC RADIATION ELEMENTS
WO2000033613A3 (en) Resonant bending wave panel-form loudspeaker
DE60135982D1 (en) SPEAKER WITH ACOUSTIC PANEL AND ELECTRIC DRIVER
AU2003271142A1 (en) Electroacoustic transducer and process for producing the same
GB2382460B (en) Surface acoustic wave device and method of producing the same
AU2003267835A1 (en) Piezoelectric vibrator and fabricating method thereof
WO2001010168A3 (en) Loudspeaker
WO2005053355A3 (en) Carry case
GB2386790A (en) Bending wave acoustic radiator
HK1041400A1 (en) Bending wave acoustic device

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 00809161.7

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

WWE Wipo information: entry into national phase

Ref document number: 2000942211

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 515485

Country of ref document: NZ

Ref document number: IN/PCT/2001/1184/KOL

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 200109365

Country of ref document: ZA

WWP Wipo information: published in national office

Ref document number: 2000942211

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 2000942211

Country of ref document: EP