GB9824256D0 - Acoustic devices etc. - Google Patents

Acoustic devices etc.

Info

Publication number
GB9824256D0
GB9824256D0 GBGB9824256.3A GB9824256A GB9824256D0 GB 9824256 D0 GB9824256 D0 GB 9824256D0 GB 9824256 A GB9824256 A GB 9824256A GB 9824256 D0 GB9824256 D0 GB 9824256D0
Authority
GB
United Kingdom
Prior art keywords
devices etc
acoustic devices
resonant modes
coupled
volume
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.)
Ceased
Application number
GBGB9824256.3A
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
Priority to GBGB9824256.3A priority Critical patent/GB9824256D0/en
Publication of GB9824256D0 publication Critical patent/GB9824256D0/en
Priority to AU64813/99A priority patent/AU745969B2/en
Priority to PCT/GB1999/003656 priority patent/WO2000028781A1/en
Priority to JP2000581852A priority patent/JP2002530032A/en
Priority to NZ510971A priority patent/NZ510971A/en
Priority to CNB998128228A priority patent/CN1135058C/en
Priority to AT99952703T priority patent/ATE237211T1/en
Priority to BR9915114-6A priority patent/BR9915114A/en
Priority to IL14242999A priority patent/IL142429A0/en
Priority to ES99952703T priority patent/ES2197682T3/en
Priority to KR1020017005652A priority patent/KR20010080941A/en
Priority to DE69906775T priority patent/DE69906775T2/en
Priority to CA002349861A priority patent/CA2349861A1/en
Priority to EP99952703A priority patent/EP1125473B1/en
Priority to TW088119786A priority patent/TW462202B/en
Priority to ZA200102755A priority patent/ZA200102755B/en
Priority to HK01106542A priority patent/HK1035988A1/en
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
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • 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
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex 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
    • 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

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Golf Clubs (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

An acoustic device has an outer shell (1) supporting bending waves and enclosing a volume (2). The bending waves couple to the enclosed volume to provide coupled resonant modes. A transducer (3, 5) is coupled to the shell to excite the coupled resonant modes. The coupling of the enclosed volume can improve the distribution of resonant modes.
GBGB9824256.3A 1998-11-06 1998-11-06 Acoustic devices etc. Ceased GB9824256D0 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
GBGB9824256.3A GB9824256D0 (en) 1998-11-06 1998-11-06 Acoustic devices etc.
EP99952703A EP1125473B1 (en) 1998-11-06 1999-11-05 Acoustic device according to bending wave principle
IL14242999A IL142429A0 (en) 1998-11-06 1999-11-05 Acoustic device according to bending wave principle
KR1020017005652A KR20010080941A (en) 1998-11-06 1999-11-05 Acoustic Device according to Bending Wave Principle
JP2000581852A JP2002530032A (en) 1998-11-06 1999-11-05 Acoustic device based on bending wave principle
NZ510971A NZ510971A (en) 1998-11-06 1999-11-05 Acoustic device with transducer and an outer shell supporting bending waves where the shell is bent to enclose an air volume that couples with the bending wave to provide coupled resonant modes
CNB998128228A CN1135058C (en) 1998-11-06 1999-11-05 Acoustic device according to bending wave principle
AT99952703T ATE237211T1 (en) 1998-11-06 1999-11-05 ACOUSTIC DEVICE BASED ON THE BENDING WAVE PRINCIPLE
BR9915114-6A BR9915114A (en) 1998-11-06 1999-11-05 Acoustic device according to the flexural wave principle
AU64813/99A AU745969B2 (en) 1998-11-06 1999-11-05 Acoustic device according to bending wave principle
ES99952703T ES2197682T3 (en) 1998-11-06 1999-11-05 ACOUSTIC DEVICE ACCORDING TO THE PRINCIPLE OF FLEXION WAVES.
PCT/GB1999/003656 WO2000028781A1 (en) 1998-11-06 1999-11-05 Acoustic device according to bending wave principle
DE69906775T DE69906775T2 (en) 1998-11-06 1999-11-05 ACOUSTIC DEVICE ACCORDING TO THE BENDING SHAFT PRINCIPLE
CA002349861A CA2349861A1 (en) 1998-11-06 1999-11-05 Acoustic device according to bending wave principle
TW088119786A TW462202B (en) 1998-11-06 1999-11-11 Acoustic device
ZA200102755A ZA200102755B (en) 1998-11-06 2001-04-04 Acoustic device according to bending wave principle.
HK01106542A HK1035988A1 (en) 1998-11-06 2001-09-15 Acoustic device according to bending wave principle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9824256.3A GB9824256D0 (en) 1998-11-06 1998-11-06 Acoustic devices etc.

Publications (1)

Publication Number Publication Date
GB9824256D0 true GB9824256D0 (en) 1998-12-30

Family

ID=10841891

Family Applications (1)

Application Number Title Priority Date Filing Date
GBGB9824256.3A Ceased GB9824256D0 (en) 1998-11-06 1998-11-06 Acoustic devices etc.

Country Status (17)

Country Link
EP (1) EP1125473B1 (en)
JP (1) JP2002530032A (en)
KR (1) KR20010080941A (en)
CN (1) CN1135058C (en)
AT (1) ATE237211T1 (en)
AU (1) AU745969B2 (en)
BR (1) BR9915114A (en)
CA (1) CA2349861A1 (en)
DE (1) DE69906775T2 (en)
ES (1) ES2197682T3 (en)
GB (1) GB9824256D0 (en)
HK (1) HK1035988A1 (en)
IL (1) IL142429A0 (en)
NZ (1) NZ510971A (en)
TW (1) TW462202B (en)
WO (1) WO2000028781A1 (en)
ZA (1) ZA200102755B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2370939A (en) * 2001-01-04 2002-07-10 New Transducers Ltd A curved or cylindrical bending wave loudspeaker panel
US6813362B2 (en) 2001-04-05 2004-11-02 New Transducers Limited Loudspeaker and method of making same
US7245729B2 (en) 2001-04-05 2007-07-17 New Transducers Limited Loudspeaker
AU2002249373A1 (en) * 2001-04-05 2002-10-21 New Transducers Limited Loudspeaker
JP2006121360A (en) * 2004-10-21 2006-05-11 Authentic Ltd Panel type speaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5119431A (en) * 1987-12-28 1992-06-02 Hamby William H Efficiency loudspeaker
US4989254A (en) * 1989-06-30 1991-01-29 Amalaha Leonard D Electro-acoustic transducer and manufacturing process
UA51671C2 (en) * 1995-09-02 2002-12-16 Нью Транзд'Юсез Лімітед Acoustic device
GB9705981D0 (en) * 1997-03-22 1997-05-07 New Transducers Ltd Personal computers
GB9705979D0 (en) * 1997-03-22 1997-05-07 New Transducers Ltd Passenger vehicles
DE69804199T2 (en) * 1997-01-09 2002-07-18 New Transducers Ltd SPEAKER

Also Published As

Publication number Publication date
CA2349861A1 (en) 2000-05-18
HK1035988A1 (en) 2001-12-14
EP1125473B1 (en) 2003-04-09
WO2000028781A1 (en) 2000-05-18
ES2197682T3 (en) 2004-01-01
KR20010080941A (en) 2001-08-25
IL142429A0 (en) 2002-03-10
BR9915114A (en) 2001-07-31
DE69906775T2 (en) 2004-01-29
EP1125473A1 (en) 2001-08-22
CN1325606A (en) 2001-12-05
DE69906775D1 (en) 2003-05-15
JP2002530032A (en) 2002-09-10
AU745969B2 (en) 2002-04-11
ZA200102755B (en) 2001-10-08
AU6481399A (en) 2000-05-29
TW462202B (en) 2001-11-01
CN1135058C (en) 2004-01-14
ATE237211T1 (en) 2003-04-15
NZ510971A (en) 2002-03-01

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)