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WO2000048428A3 - Exciter for imparting bending wave energy to a panel - Google Patents

Exciter for imparting bending wave energy to a panel Download PDF

Info

Publication number
WO2000048428A3
WO2000048428A3 PCT/GB2000/000389 GB0000389W WO0048428A3 WO 2000048428 A3 WO2000048428 A3 WO 2000048428A3 GB 0000389 W GB0000389 W GB 0000389W WO 0048428 A3 WO0048428 A3 WO 0048428A3
Authority
WO
WIPO (PCT)
Prior art keywords
exciter
panel
wave energy
bending wave
imparting bending
Prior art date
Application number
PCT/GB2000/000389
Other languages
French (fr)
Other versions
WO2000048428A2 (en
Inventor
Graham Bank
Julian Fordham
Original Assignee
New Transducers Ltd
Graham Bank
Julian Fordham
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, Julian Fordham filed Critical New Transducers Ltd
Priority to EP00903798A priority Critical patent/EP1151631A2/en
Priority to EA200100883A priority patent/EA200100883A1/en
Priority to CA002361295A priority patent/CA2361295A1/en
Priority to AU25563/00A priority patent/AU2556300A/en
Priority to JP2000599239A priority patent/JP2002537705A/en
Publication of WO2000048428A2 publication Critical patent/WO2000048428A2/en
Publication of WO2000048428A3 publication Critical patent/WO2000048428A3/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/066—Loudspeakers using the principle of inertia

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

An exciter for exciting bending waves comprises a voice coil (5), a magnet assembly (11) having apertures (21) and a strut member (23) having ribs (27) extending through the apertures (21) for coupling to top and bottom plinths (1, 3).
PCT/GB2000/000389 1999-02-11 2000-02-09 Exciter for imparting bending wave energy to a panel WO2000048428A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP00903798A EP1151631A2 (en) 1999-02-11 2000-02-09 Exciter for imparting bending wave energy to a panel
EA200100883A EA200100883A1 (en) 1999-02-11 2000-02-09 SPEAKERS
CA002361295A CA2361295A1 (en) 1999-02-11 2000-02-09 Loudspeakers
AU25563/00A AU2556300A (en) 1999-02-11 2000-02-09 Loudspeakers
JP2000599239A JP2002537705A (en) 1999-02-11 2000-02-09 Loudspeaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9903044.7 1999-02-11
GBGB9903044.7A GB9903044D0 (en) 1999-02-11 1999-02-11 Loudspeakers

Publications (2)

Publication Number Publication Date
WO2000048428A2 WO2000048428A2 (en) 2000-08-17
WO2000048428A3 true WO2000048428A3 (en) 2001-01-25

Family

ID=10847510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/000389 WO2000048428A2 (en) 1999-02-11 2000-02-09 Exciter for imparting bending wave energy to a panel

Country Status (9)

Country Link
EP (1) EP1151631A2 (en)
JP (1) JP2002537705A (en)
CN (1) CN1339236A (en)
AU (1) AU2556300A (en)
CA (1) CA2361295A1 (en)
EA (1) EA200100883A1 (en)
GB (1) GB9903044D0 (en)
TW (1) TW469747B (en)
WO (1) WO2000048428A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0023134D0 (en) * 2000-09-21 2000-11-01 New Transducers Ltd Loudspeaker driver
US6751329B2 (en) 2000-09-21 2004-06-15 New Transducers Limited Loudspeaker driver
US7447322B2 (en) 2004-01-13 2008-11-04 Brookstone Purchasing, Inc. Speaker having a transparent panel
US8144916B2 (en) 2006-09-27 2012-03-27 Bailiang Zhang Vibrating system of panel form electrodynamic loudspeaker

Citations (3)

* 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
WO1998034320A2 (en) * 1997-01-31 1998-08-06 New Transducers Limited Electro-dynamic inertial vibration exciter
WO1998039947A1 (en) * 1997-03-04 1998-09-11 New Transducers Limited Acoustic device

Patent Citations (3)

* 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
WO1998034320A2 (en) * 1997-01-31 1998-08-06 New Transducers Limited Electro-dynamic inertial vibration exciter
WO1998039947A1 (en) * 1997-03-04 1998-09-11 New Transducers Limited Acoustic device

Also Published As

Publication number Publication date
GB9903044D0 (en) 1999-03-31
EA200100883A1 (en) 2002-02-28
CN1339236A (en) 2002-03-06
JP2002537705A (en) 2002-11-05
WO2000048428A2 (en) 2000-08-17
CA2361295A1 (en) 2000-08-17
EP1151631A2 (en) 2001-11-07
AU2556300A (en) 2000-08-29
TW469747B (en) 2001-12-21

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