AU6882296A - Loudspeakers with panel-form acoustic radiating elements - Google Patents

Loudspeakers with panel-form acoustic radiating elements

Info

Publication number
AU6882296A
AU6882296A AU68822/96A AU6882296A AU6882296A AU 6882296 A AU6882296 A AU 6882296A AU 68822/96 A AU68822/96 A AU 68822/96A AU 6882296 A AU6882296 A AU 6882296A AU 6882296 A AU6882296 A AU 6882296A
Authority
AU
Australia
Prior art keywords
radiator
enclosure
panel
loudspeakers
radiating elements
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
AU68822/96A
Other versions
AU704299B2 (en
Inventor
Henry Azima
Martin Colloms
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
Priority claimed from GBGB9517918.0A external-priority patent/GB9517918D0/en
Priority claimed from GBGB9522281.6A external-priority patent/GB9522281D0/en
Priority claimed from GBGB9606836.6A external-priority patent/GB9606836D0/en
Application filed by New Transducers Ltd filed Critical New Transducers Ltd
Publication of AU6882296A publication Critical patent/AU6882296A/en
Application granted granted Critical
Publication of AU704299B2 publication Critical patent/AU704299B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • 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 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • 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
    • H04R1/2838—Enclosures comprising vibrating or resonating arrangements of the bandpass type
    • H04R1/2842—Enclosures comprising vibrating or resonating arrangements of the bandpass type 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
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/07—Loudspeakers using bending wave resonance and pistonic motion to generate sound

Abstract

A loudspeaker (81) comprising an enclosure, an acoustic radiator (2) in the enclosure, a compliant suspension (3) mounting the radiator in the enclosure for pistonic movement relative thereto, and transducer means (9) for driving the radiator pistonically, characterized in that the radiator is a panel-form distributed mode acoustic radiator, by a first transducer mounted wholly and exclusively on the radiator to vibrate the radiator to cause it to resonate, and by means (11) for varying the air pressure in the enclosure to cause the radiator to move pistonically.
AU68822/96A 1995-09-02 1996-09-02 Loudspeakers with panel-form acoustic radiating elements Ceased AU704299B2 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
GBGB9517918.0A GB9517918D0 (en) 1995-09-02 1995-09-02 Acoustic device
GB9517918 1995-09-02
GBGB9522281.6A GB9522281D0 (en) 1995-10-31 1995-10-31 Acoustic device
GB9522281 1995-10-31
GBGB9606836.6A GB9606836D0 (en) 1996-03-30 1996-03-30 Acoustic device
GB9606836 1996-03-30
PCT/GB1996/002166 WO1997009849A1 (en) 1995-09-02 1996-09-02 Loudspeakers with panel-form acoustic radiating elements

Publications (2)

Publication Number Publication Date
AU6882296A true AU6882296A (en) 1997-03-27
AU704299B2 AU704299B2 (en) 1999-04-22

Family

ID=34865252

Family Applications (1)

Application Number Title Priority Date Filing Date
AU68822/96A Ceased AU704299B2 (en) 1995-09-02 1996-09-02 Loudspeakers with panel-form acoustic radiating elements

Country Status (13)

Country Link
EP (1) EP0847668B1 (en)
JP (1) JPH11512261A (en)
CN (1) CN1195457A (en)
AT (1) ATE179043T1 (en)
AU (1) AU704299B2 (en)
CA (1) CA2230438A1 (en)
DE (1) DE69602100T2 (en)
DK (1) DK0847668T3 (en)
EA (1) EA002097B1 (en)
ES (1) ES2132954T3 (en)
HK (1) HK1008648A1 (en)
RO (1) RO119048B1 (en)
WO (1) WO1997009849A1 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1120007T3 (en) 1998-06-22 2005-12-12 Slab Technology Ltd speakers
DE19955867A1 (en) * 1999-11-22 2001-06-21 Harman Audio Electronic Sys Flat speaker arrangement for bass reproduction
US10158337B2 (en) 2004-08-10 2018-12-18 Bongiovi Acoustics Llc System and method for digital signal processing
US11431312B2 (en) 2004-08-10 2022-08-30 Bongiovi Acoustics Llc System and method for digital signal processing
US10848118B2 (en) 2004-08-10 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US8284955B2 (en) 2006-02-07 2012-10-09 Bongiovi Acoustics Llc System and method for digital signal processing
ITMI20041972A1 (en) 2004-10-18 2005-01-18 Daniele Ramenzoni ELECTRO-ACOUSTIC DEVICE, WITH CAVITY RESONATOR, THAT PROVIDES EXTREME THREE-DIMENSIONAL CHARACTERISTICS TO CONTROL, CONCENTRATE AND SPREAD INFRASOUNDS, SOUNDS AND ULTRASOUNDS.
US11202161B2 (en) 2006-02-07 2021-12-14 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
US10701505B2 (en) 2006-02-07 2020-06-30 Bongiovi Acoustics Llc. System, method, and apparatus for generating and digitally processing a head related audio transfer function
US10848867B2 (en) 2006-02-07 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10069471B2 (en) 2006-02-07 2018-09-04 Bongiovi Acoustics Llc System and method for digital signal processing
US9615189B2 (en) 2014-08-08 2017-04-04 Bongiovi Acoustics Llc Artificial ear apparatus and associated methods for generating a head related audio transfer function
FR2968881B1 (en) * 2010-12-10 2013-01-04 Zedel BI-MODE ACOUSTIC TRANSDUCER
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US9264004B2 (en) 2013-06-12 2016-02-16 Bongiovi Acoustics Llc System and method for narrow bandwidth digital signal processing
GB2517721A (en) * 2013-08-29 2015-03-04 Nokia Corp Speaker apparatus
US9906858B2 (en) 2013-10-22 2018-02-27 Bongiovi Acoustics Llc System and method for digital signal processing
US10639000B2 (en) 2014-04-16 2020-05-05 Bongiovi Acoustics Llc Device for wide-band auscultation
US9615813B2 (en) 2014-04-16 2017-04-11 Bongiovi Acoustics Llc. Device for wide-band auscultation
US10820883B2 (en) 2014-04-16 2020-11-03 Bongiovi Acoustics Llc Noise reduction assembly for auscultation of a body
US9564146B2 (en) 2014-08-01 2017-02-07 Bongiovi Acoustics Llc System and method for digital signal processing in deep diving environment
US9638672B2 (en) 2015-03-06 2017-05-02 Bongiovi Acoustics Llc System and method for acquiring acoustic information from a resonating body
US9621994B1 (en) 2015-11-16 2017-04-11 Bongiovi Acoustics Llc Surface acoustic transducer
WO2017087495A1 (en) 2015-11-16 2017-05-26 Bongiovi Acoustics Llc Surface acoustic transducer
AU2019252524A1 (en) 2018-04-11 2020-11-05 Bongiovi Acoustics Llc Audio enhanced hearing protection system
US10959035B2 (en) 2018-08-02 2021-03-23 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3164221A (en) * 1961-06-06 1965-01-05 Rosen Alfred H Low frequency loudspeaker system
US3247925A (en) * 1962-03-08 1966-04-26 Lord Corp Loudspeaker
US4379951A (en) * 1977-04-20 1983-04-12 Gabr Saad Z M Electro-acoustic transducer means
EP0340435A3 (en) * 1988-04-01 1991-04-24 Yamaha Corporation Acoustic apparatus
EP0541646B1 (en) * 1990-08-04 1995-01-11 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Panel-form loudspeaker
WO1993007729A1 (en) * 1991-10-02 1993-04-15 Noise Cancellation Technologies, Inc. Vacuum speaker
DE69220342T2 (en) * 1991-12-20 1997-11-20 Matsushita Electric Ind Co Ltd Loudspeaker for bass reproduction

Also Published As

Publication number Publication date
CN1195457A (en) 1998-10-07
DE69602100T2 (en) 1999-09-16
HK1008648A1 (en) 1999-05-14
EP0847668A1 (en) 1998-06-17
AU704299B2 (en) 1999-04-22
EA002097B1 (en) 2001-12-24
DE69602100D1 (en) 1999-05-20
JPH11512261A (en) 1999-10-19
ATE179043T1 (en) 1999-04-15
WO1997009849A1 (en) 1997-03-13
RO119048B1 (en) 2004-02-27
EA199800250A1 (en) 1998-10-29
DK0847668T3 (en) 1999-10-25
EP0847668B1 (en) 1999-04-14
CA2230438A1 (en) 1997-03-13
ES2132954T3 (en) 1999-08-16

Similar Documents

Publication Publication Date Title
AU6882296A (en) Loudspeakers with panel-form acoustic radiating elements
MX9801588A (en) Loudspeakers comprising panel-form acoustic radiating elements.
HK1008649A1 (en) Panel-form loudspeakers
IL123484A0 (en) Loudspeakers comprising panel-form acoustic radiating elements
HK1008647A1 (en) Loudspeakers comprising panel-form acoustic radiating elements
WO1997009856A3 (en) A portable compact disc player
WO1997009845A3 (en) Loudspeakers comprising panel-form acoustic radiating elements
WO1997009852A3 (en) Visual display means incorporating loudspeakers
PL325235A1 (en) Screen incorporating loudspeakers
EP0999723A3 (en) Piezoelectric speaker, method for producing the same, and speaker system including the same
PL325245A1 (en) Musical instrument with built-in loudspeakers
HK1008650A1 (en) Panel-form loudspeakers
WO2001072086A3 (en) Bending wave panel - form loudspeakers

Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired