[go: up one dir, main page]

AU6003700A - Loudspeaker - Google Patents

Loudspeaker

Info

Publication number
AU6003700A
AU6003700A AU60037/00A AU6003700A AU6003700A AU 6003700 A AU6003700 A AU 6003700A AU 60037/00 A AU60037/00 A AU 60037/00A AU 6003700 A AU6003700 A AU 6003700A AU 6003700 A AU6003700 A AU 6003700A
Authority
AU
Australia
Prior art keywords
panel
cavity
duct
loudspeaker
resonance frequency
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.)
Abandoned
Application number
AU60037/00A
Inventor
Graham Bank
Neil Harris
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
Application filed by New Transducers Ltd filed Critical New Transducers Ltd
Publication of AU6003700A publication Critical patent/AU6003700A/en
Abandoned 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
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line for loudspeaker transducers
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
    • H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
    • 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers

Landscapes

  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Surgical Instruments (AREA)
  • Liquid Crystal (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

A loudspeaker has a bending wave panel (11) and an exciter (13) mounted on the panel to excite bendingg wave modes in the panel. A rear box (15) defines a cavity (17) in cooperation with the panel (11). A resonance of cavity and panel at a coupled mode resonance frequency may be controlled by providing a duct (19) coupled to the cavity to selectively reduce sound pressure at the coupled mode resonance frequency. Damping (21) may be provided in the duct (19).
AU60037/00A 1999-07-30 2000-07-24 Loudspeaker Abandoned AU6003700A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9917908 1999-07-30
GBGB9917908.7A GB9917908D0 (en) 1999-07-30 1999-07-30 Loudspeakers
PCT/GB2000/002784 WO2001010168A2 (en) 1999-07-30 2000-07-24 Loudspeaker

Publications (1)

Publication Number Publication Date
AU6003700A true AU6003700A (en) 2001-02-19

Family

ID=10858223

Family Applications (1)

Application Number Title Priority Date Filing Date
AU60037/00A Abandoned AU6003700A (en) 1999-07-30 2000-07-24 Loudspeaker

Country Status (11)

Country Link
EP (1) EP1201102B1 (en)
JP (1) JP2003526968A (en)
CN (1) CN1250042C (en)
AT (1) ATE244494T1 (en)
AU (1) AU6003700A (en)
DE (1) DE60003692D1 (en)
GB (1) GB9917908D0 (en)
HK (1) HK1042012B (en)
NZ (1) NZ516351A (en)
TW (1) TW490988B (en)
WO (1) WO2001010168A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US7207413B2 (en) * 2003-06-02 2007-04-24 Tbi Audio Systems Llc Closed loop embedded audio transmission line technology for loudspeaker enclosures and systems
GB0400323D0 (en) * 2004-01-08 2004-02-11 New Transducers Ltd Loudspeakers
GB0410962D0 (en) * 2004-05-17 2004-06-16 Mordaunt Short Ltd Loudspeaker
US20060061504A1 (en) * 2004-09-23 2006-03-23 The Regents Of The University Of California Through wall detection and tracking system
AU2007231525A1 (en) * 2006-03-28 2007-10-04 Immersion Technology Property Limited Loudspeaker system with acoustic equalisation
CN104038855A (en) * 2014-06-04 2014-09-10 瑞声光电科技(常州)有限公司 Electric acoustic device and assembly method for same
WO2018070399A1 (en) * 2016-10-13 2018-04-19 パナソニックＩｐマネジメント株式会社 Flat speaker and display device
CN107205194B (en) * 2017-06-07 2020-03-06 鞠波 Sound box and sound box system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848090A (en) * 1971-11-18 1974-11-12 J Walker Wall hanging speaker system
US3938617A (en) * 1974-01-17 1976-02-17 Fort Enterprises, Limited Speaker enclosure
US4899390A (en) * 1986-09-19 1990-02-06 Matsushita Electric Industrial Co., Ltd. Thin speaker having an enclosure within an open portion and a closed portion
EP0453230B1 (en) * 1990-04-20 1995-06-21 Matsushita Electric Industrial Co., Ltd. Speaker system
UA51671C2 (en) * 1995-09-02 2002-12-16 Нью Транзд'Юсез Лімітед Acoustic device

Also Published As

Publication number Publication date
EP1201102A2 (en) 2002-05-02
HK1042012A1 (en) 2002-07-26
ATE244494T1 (en) 2003-07-15
GB9917908D0 (en) 1999-09-29
EP1201102B1 (en) 2003-07-02
HK1042012B (en) 2003-10-03
CN1250042C (en) 2006-04-05
CN1360809A (en) 2002-07-24
WO2001010168A3 (en) 2001-08-16
DE60003692D1 (en) 2003-08-07
NZ516351A (en) 2002-09-27
TW490988B (en) 2002-06-11
WO2001010168A2 (en) 2001-02-08
JP2003526968A (en) 2003-09-09

Similar Documents

Publication Publication Date Title
TW428415B (en) Panel-form loudspeakers
MY125969A (en) Transducer
IL140997A0 (en) Loudspeaker drive unit having a resonant panel-form member
YU16301A (en) Loudspeakers comprising a resonant panel-form member
DE60135982D1 (en) SPEAKER WITH ACOUSTIC PANEL AND ELECTRIC DRIVER
BG103669A (en) Acoustic device
EP2178307A3 (en) Speaker apparatus and electronic apparatus having speaker apparatus enclosed therein
DK0847659T3 (en) Speakers comprising panel-shaped acoustic radiating elements
EA199800256A1 (en) PASSENGER TRONS-PORT TOOL, IN WHICH THE SPEAKER IS INSTALLED WITH THE PANEL SPEAKER RADIATING ELEMENT
EP1221823A3 (en) Electroacoustic waveguide transducing
GB2344248B (en) Auxiliary bass radiator units
AU6882296A (en) Loudspeakers with panel-form acoustic radiating elements
AU5969199A (en) A hearing aid
AU6003700A (en) Loudspeaker
AU767458C (en) Speaker system
GB2324928B (en) Loudspeaker systems
AU2002223810A1 (en) Display signs
WO2002013575A8 (en) Bending wave loudspeaker
EP0868107A3 (en) Loudspeaker unit
WO2001003467A3 (en) Bending wave acoustic device
AU7935700A (en) Keyboard comprising a loudspeaker
WO2002104065A3 (en) Mobile telephone
WO2002013574A3 (en) Bending wave loudspeaker
WO2002045462A3 (en) Display systems
GB2366682A (en) Acoustic device

Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase