WO2001093628A3 - Loudspeaker of the bending wave type and exciter therefor - Google Patents

Loudspeaker of the bending wave type and exciter therefor Download PDF

Info

Publication number
WO2001093628A3
WO2001093628A3 PCT/GB2001/002401 GB0102401W WO0193628A3 WO 2001093628 A3 WO2001093628 A3 WO 2001093628A3 GB 0102401 W GB0102401 W GB 0102401W WO 0193628 A3 WO0193628 A3 WO 0193628A3
Authority
WO
WIPO (PCT)
Prior art keywords
loudspeaker
exciter
wave type
bending wave
exciter therefor
Prior art date
Application number
PCT/GB2001/002401
Other languages
French (fr)
Other versions
WO2001093628A2 (en
Inventor
Neil Harris
Jeffrey Power
Vladimir Gontcharov
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 GB0013030A external-priority patent/GB0013030D0/en
Priority claimed from GB0105795A external-priority patent/GB0105795D0/en
Application filed by New Transducers Ltd filed Critical New Transducers Ltd
Priority to AU60472/01A priority Critical patent/AU6047201A/en
Priority to GB0130875A priority patent/GB2370717A/en
Publication of WO2001093628A2 publication Critical patent/WO2001093628A2/en
Publication of WO2001093628A3 publication Critical patent/WO2001093628A3/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

Landscapes

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

Abstract

A loudspeaker comprising a panel adapted to support bending waves and an exciter for exciting said bending waves employs an exciter having an effective size with which it acts on said panel, the effective size varying in dependence on the frequency with which the exciter acts on the panel. Exciters suitable for use in such a loudspeaker are also disclosed.
PCT/GB2001/002401 2000-05-31 2001-05-30 Loudspeaker of the bending wave type and exciter therefor WO2001093628A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU60472/01A AU6047201A (en) 2000-05-31 2001-05-30 Loudspeaker
GB0130875A GB2370717A (en) 2000-05-31 2001-05-30 Loudspeaker

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0013030A GB0013030D0 (en) 2000-05-31 2000-05-31 Piezoelectric transducer
GB0013030.2 2000-05-31
GB0105795.9 2001-03-08
GB0105795A GB0105795D0 (en) 2001-03-08 2001-03-08 Acoustic device

Publications (2)

Publication Number Publication Date
WO2001093628A2 WO2001093628A2 (en) 2001-12-06
WO2001093628A3 true WO2001093628A3 (en) 2002-04-25

Family

ID=26244372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2001/002401 WO2001093628A2 (en) 2000-05-31 2001-05-30 Loudspeaker of the bending wave type and exciter therefor

Country Status (3)

Country Link
AU (1) AU6047201A (en)
GB (1) GB2370717A (en)
WO (1) WO2001093628A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251227B4 (en) * 2002-11-04 2005-06-02 Siemens Ag Flat speaker and method of making a filter therefor
US10356523B2 (en) * 2017-12-13 2019-07-16 Nvf Tech Ltd Distributed mode loudspeaker actuator including patterned electrodes
US10477321B2 (en) 2018-03-05 2019-11-12 Google Llc Driving distributed mode loudspeaker actuator that includes patterned electrodes
EP4284020A4 (en) * 2022-04-01 2023-11-29 Shenzhen Shokz Co., Ltd. Acoustic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296404A (en) * 1994-12-19 1996-06-26 Jeffrey Power Frequency-sensitive control of beamwidth an acoustic transducers
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
WO1999037123A1 (en) * 1998-01-20 1999-07-22 Ericsson Inc. Digital piezoelectric transducers and methods
WO2000013464A1 (en) * 1998-08-28 2000-03-09 New Transducers Limited Loudspeakers comprising a resonant panel-form member

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296404A (en) * 1994-12-19 1996-06-26 Jeffrey Power Frequency-sensitive control of beamwidth an acoustic transducers
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
WO1999037123A1 (en) * 1998-01-20 1999-07-22 Ericsson Inc. Digital piezoelectric transducers and methods
WO2000013464A1 (en) * 1998-08-28 2000-03-09 New Transducers Limited Loudspeakers comprising a resonant panel-form member

Also Published As

Publication number Publication date
WO2001093628A2 (en) 2001-12-06
AU6047201A (en) 2001-12-11
GB2370717A (en) 2002-07-03
GB0130875D0 (en) 2002-02-06

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