GB2386790A - Bending wave acoustic radiator - Google Patents

Bending wave acoustic radiator

Info

Publication number
GB2386790A
GB2386790A GB0316845A GB0316845A GB2386790A GB 2386790 A GB2386790 A GB 2386790A GB 0316845 A GB0316845 A GB 0316845A GB 0316845 A GB0316845 A GB 0316845A GB 2386790 A GB2386790 A GB 2386790A
Authority
GB
United Kingdom
Prior art keywords
sheet
bending wave
acoustic radiator
radiator
wave acoustic
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
GB0316845A
Other versions
GB2386790B (en
GB0316845D0 (en
Inventor
Henry Azima
Graham Bank
Julian Fordham
Martin Colloms
Charles Bream
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.)
NVF Tech Ltd
Original Assignee
New Transducers Ltd
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 GB0107314A external-priority patent/GB0107314D0/en
Priority claimed from GB0130469A external-priority patent/GB0130469D0/en
Application filed by New Transducers Ltd filed Critical New Transducers Ltd
Publication of GB0316845D0 publication Critical patent/GB0316845D0/en
Publication of GB2386790A publication Critical patent/GB2386790A/en
Application granted granted Critical
Publication of GB2386790B publication Critical patent/GB2386790B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029—Diaphragms comprising fibres

Abstract

A bending wave panel-form acoustic radiator formed from sheet material to define an acoustically active area and comprising at least one integral stiffening member in the form of a corrugation extending out of the plane of the sheet and at least partially across the acoustically active area of the radiator, which stiffening member is of substantially U-shaped cross section. A method of making a bending wave panel-form acoustic radiator, comprising forming a sheet into a panel having at least one integral corrugation member extending out of the plane of the sheet and at least partly across the sheet and of substantially U-shape cross-section, to stiffen the sheet to have a desired ability to support and propagate bending waves.
GB0316845A 2001-03-23 2002-03-13 Bending wave acoustic radiator Expired - Fee Related GB2386790B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0107314A GB0107314D0 (en) 2001-03-23 2001-03-23 Bending wave acoustic radiator
GB0130469A GB0130469D0 (en) 2001-12-20 2001-12-20 Bending wave acoustic radiator
PCT/GB2002/000993 WO2002078391A2 (en) 2001-03-23 2002-03-13 Bending wave acoustic radiator

Publications (3)

Publication Number Publication Date
GB0316845D0 GB0316845D0 (en) 2003-08-20
GB2386790A true GB2386790A (en) 2003-09-24
GB2386790B GB2386790B (en) 2004-08-18

Family

ID=26245888

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0316845A Expired - Fee Related GB2386790B (en) 2001-03-23 2002-03-13 Bending wave acoustic radiator

Country Status (6)

Country Link
CN (1) CN100551133C (en)
AU (1) AU2002238709A1 (en)
GB (1) GB2386790B (en)
HK (1) HK1055655A1 (en)
TW (1) TW527846B (en)
WO (1) WO2002078391A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA06011950A (en) 2004-04-16 2007-01-26 New Transducers Ltd Acoustic device & method of making acoustic device.
CN1882198B (en) * 2006-04-30 2012-06-13 南京大学 Method for designing sound pressure frequency response curve of drive location optimization bending vibration type thin plate loudspeaker
EP1988740A1 (en) 2007-05-03 2008-11-05 Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO Sound generator
DE102011015747A1 (en) * 2011-03-31 2012-10-04 Airbus Operations Gmbh Active acoustic element e.g. flat speaker, for use in cabin lining of e.g. aircraft, has plate-like element producing sound waves, partially made of foamed glass ceramic material and exhibiting three-dimensional surface structure
US9628917B2 (en) * 2014-07-23 2017-04-18 Bose Corporation Sound producing system
US9660596B2 (en) * 2015-01-23 2017-05-23 Tectonic Audio Labs Audio transducer stabilization system and method
GB2539029B (en) * 2015-06-04 2017-06-07 Amina Tech Ltd Distributed mode loudspeaker damping oscillations within exciter feet
GB2586959B (en) * 2019-08-08 2021-10-13 Amina Tech Limited Distributed mode loudspeaker
KR20220091082A (en) * 2020-12-23 2022-06-30 엘지디스플레이 주식회사 Sound generating module and vehicle comprising the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9704486D0 (en) * 1997-03-04 1997-04-23 New Transducers Ltd Acoustic devices etc
GB9822246D0 (en) * 1998-10-13 1998-12-09 New Transducers Ltd Loudspeakers
GB9911271D0 (en) * 1999-05-15 1999-07-14 New Transducers Ltd Acoustic device
GB9913465D0 (en) * 1999-06-10 1999-08-11 New Transducers Ltd Acoustic device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Not yet advised *

Also Published As

Publication number Publication date
TW527846B (en) 2003-04-11
HK1055655A1 (en) 2004-01-16
GB2386790B (en) 2004-08-18
AU2002238709A1 (en) 2002-10-08
WO2002078391A2 (en) 2002-10-03
AU2002238709A8 (en) 2008-01-03
WO2002078391A3 (en) 2007-10-25
GB0316845D0 (en) 2003-08-20
CN100551133C (en) 2009-10-14
CN1625918A (en) 2005-06-08

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