WO2001080597A3 - Acoustic device and method for driving it - Google Patents

Acoustic device and method for driving it Download PDF

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Publication number
WO2001080597A3
WO2001080597A3 PCT/GB2001/001651 GB0101651W WO0180597A3 WO 2001080597 A3 WO2001080597 A3 WO 2001080597A3 GB 0101651 W GB0101651 W GB 0101651W WO 0180597 A3 WO0180597 A3 WO 0180597A3
Authority
WO
WIPO (PCT)
Prior art keywords
exciters
acoustic output
impulses
driving
acoustic device
Prior art date
Application number
PCT/GB2001/001651
Other languages
French (fr)
Other versions
WO2001080597A2 (en
Inventor
Henry Azima
Nicholas Patrick Roland Hill
Graham Bank
Vladimir Gontcharov
Valerie Joan Taylor
Original Assignee
New Transducers Ltd
Henry Azima
Nicholas Patrick Roland Hill
Graham Bank
Vladimir Gontcharov
Valerie Joan Taylor
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, Henry Azima, Nicholas Patrick Roland Hill, Graham Bank, Vladimir Gontcharov, Valerie Joan Taylor filed Critical New Transducers Ltd
Priority to AU48543/01A priority Critical patent/AU4854301A/en
Publication of WO2001080597A2 publication Critical patent/WO2001080597A2/en
Publication of WO2001080597A3 publication Critical patent/WO2001080597A3/en

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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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

A method of and apparatus for producing acoustic output employs a bending wave member to which a number of exciters are coupled over at least part of the area. The exciters are individually addressable to generate impulses in response to digital input that has been suitably shaped and delayed, the impulses being integrated in the panel so that a form of synchronous summation takes place by bending action making use of the dispersive properties of the device. The resulting acoustic output has a reinforced fundamental frequency and reduced harmonics.
PCT/GB2001/001651 2000-04-14 2001-04-12 Acoustic device and method for driving it WO2001080597A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48543/01A AU4854301A (en) 2000-04-14 2001-04-12 Acoustic device and method for driving it

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0009133A GB0009133D0 (en) 2000-04-14 2000-04-14 Acoustic device and method for driving it
GB0009133.0 2000-04-14

Publications (2)

Publication Number Publication Date
WO2001080597A2 WO2001080597A2 (en) 2001-10-25
WO2001080597A3 true WO2001080597A3 (en) 2002-09-12

Family

ID=9889849

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/001651 WO2001080597A2 (en) 2000-04-14 2001-04-12 Acoustic device and method for driving it

Country Status (3)

Country Link
AU (1) AU4854301A (en)
GB (1) GB0009133D0 (en)
WO (1) WO2001080597A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2375453A (en) * 2001-05-09 2002-11-13 New Transducers Ltd Driving a bending wave loudspeaker diaphragm at a plurality of locations

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996031086A1 (en) * 1995-03-31 1996-10-03 Anthony Hooley Improvements in or relating to loudspeakers
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
WO1998053638A2 (en) * 1997-05-17 1998-11-26 New Transducers Limited Acoustic apparatus comprising an array of loudspeakers
WO2000005920A1 (en) * 1998-07-21 2000-02-03 New Transducers Ltd Digital loudspeaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996031086A1 (en) * 1995-03-31 1996-10-03 Anthony Hooley Improvements in or relating to loudspeakers
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
WO1998053638A2 (en) * 1997-05-17 1998-11-26 New Transducers Limited Acoustic apparatus comprising an array of loudspeakers
WO2000005920A1 (en) * 1998-07-21 2000-02-03 New Transducers Ltd Digital loudspeaker

Also Published As

Publication number Publication date
WO2001080597A2 (en) 2001-10-25
AU4854301A (en) 2001-10-30
GB0009133D0 (en) 2000-05-31

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