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GB2366682A - Acoustic device - Google Patents

Acoustic device

Info

Publication number
GB2366682A
GB2366682A GB0128566A GB0128566A GB2366682A GB 2366682 A GB2366682 A GB 2366682A GB 0128566 A GB0128566 A GB 0128566A GB 0128566 A GB0128566 A GB 0128566A GB 2366682 A GB2366682 A GB 2366682A
Authority
GB
United Kingdom
Prior art keywords
acoustic device
loudspeaker system
exciters
panels
therebetween
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.)
Withdrawn
Application number
GB0128566A
Other versions
GB0128566D0 (en
Inventor
Joerg Panzer
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 GB0128566D0 publication Critical patent/GB0128566D0/en
Publication of GB2366682A publication Critical patent/GB2366682A/en
Withdrawn legal-status Critical Current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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • 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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • 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

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

An acoustic device in the form of a loudspeaker system is described. The loudspeaker system has a plurality of distributed mode loudspeakers (1) each having a resonant bending wave panel (3) extending laterally of a principal axis (13) to define slots (11) therebetween. Exciters (5) are mounted on the panels (3).
GB0128566A 1999-06-23 2000-06-20 Acoustic device Withdrawn GB2366682A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9914507.0A GB9914507D0 (en) 1999-06-23 1999-06-23 Acoustic device
PCT/GB2000/002229 WO2000079833A2 (en) 1999-06-23 2000-06-20 Distributed mode acoustic device

Publications (2)

Publication Number Publication Date
GB0128566D0 GB0128566D0 (en) 2002-01-23
GB2366682A true GB2366682A (en) 2002-03-13

Family

ID=10855793

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9914507.0A Ceased GB9914507D0 (en) 1999-06-23 1999-06-23 Acoustic device
GB0128566A Withdrawn GB2366682A (en) 1999-06-23 2000-06-20 Acoustic device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9914507.0A Ceased GB9914507D0 (en) 1999-06-23 1999-06-23 Acoustic device

Country Status (4)

Country Link
AU (1) AU5413300A (en)
GB (2) GB9914507D0 (en)
TW (1) TW484335B (en)
WO (1) WO2000079833A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7551062B2 (en) 2005-03-14 2009-06-23 American Technology Corporation Directional acoustic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322578A (en) * 1977-09-06 1982-03-30 Society Ap Selmin Sas Of Massimo Coltelli & Co. Method and devices for the omnidirectional radiation of sound waves
WO1997009847A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Panel-form loudspeakers
WO1998053638A2 (en) * 1997-05-17 1998-11-26 New Transducers Limited Acoustic apparatus comprising an array of loudspeakers
WO1999008479A1 (en) * 1997-08-05 1999-02-18 New Transducers Limited Sound radiating devices/systems

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4322578A (en) * 1977-09-06 1982-03-30 Society Ap Selmin Sas Of Massimo Coltelli & Co. Method and devices for the omnidirectional radiation of sound waves
WO1997009847A1 (en) * 1995-09-02 1997-03-13 New Transducers Limited Panel-form loudspeakers
WO1998053638A2 (en) * 1997-05-17 1998-11-26 New Transducers Limited Acoustic apparatus comprising an array of loudspeakers
WO1999008479A1 (en) * 1997-08-05 1999-02-18 New Transducers Limited Sound radiating devices/systems

Also Published As

Publication number Publication date
AU5413300A (en) 2001-01-09
TW484335B (en) 2002-04-21
WO2000079833A2 (en) 2000-12-28
GB9914507D0 (en) 1999-08-25
WO2000079833A3 (en) 2001-06-28
GB0128566D0 (en) 2002-01-23

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)