WO1999037121A1 - Active acoustic devices comprising panel members - Google Patents

Active acoustic devices comprising panel members Download PDF

Info

Publication number
WO1999037121A1
WO1999037121A1 PCT/GB1999/000143 GB9900143W WO9937121A1 WO 1999037121 A1 WO1999037121 A1 WO 1999037121A1 GB 9900143 W GB9900143 W GB 9900143W WO 9937121 A1 WO9937121 A1 WO 9937121A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel member
transducer
acoustic
edge
panel
Prior art date
Application number
PCT/GB1999/000143
Other languages
English (en)
French (fr)
Inventor
Farad Azima
Henry Azima
Martin Colloms
Graham Bank
Nicholas Patrick Roland Hill
Original Assignee
New Transducers Limited
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 GBGB9801054.9A external-priority patent/GB9801054D0/en
Priority claimed from GBGB9801057.2A external-priority patent/GB9801057D0/en
Priority claimed from GBGB9811100.8A external-priority patent/GB9811100D0/en
Priority claimed from GBGB9813293.9A external-priority patent/GB9813293D0/en
Priority to BR9907145-2A priority Critical patent/BR9907145A/pt
Priority to IL13682099A priority patent/IL136820A0/xx
Priority to AT99901055T priority patent/ATE280482T1/de
Priority to DE69921295T priority patent/DE69921295T8/de
Priority to NZ504133A priority patent/NZ504133A/en
Priority to AU20681/99A priority patent/AU747693B2/en
Application filed by New Transducers Limited filed Critical New Transducers Limited
Priority to PL99341377A priority patent/PL341377A1/xx
Priority to CN998019070A priority patent/CN1287766B/zh
Priority to EA200000781A priority patent/EA200000781A1/ru
Priority to SK1082-2000A priority patent/SK10822000A3/sk
Priority to HU0102858A priority patent/HUP0102858A3/hu
Priority to EP99901055A priority patent/EP1050190B1/en
Priority to JP2000540693A priority patent/JP4173283B2/ja
Priority to CA002318292A priority patent/CA2318292A1/en
Publication of WO1999037121A1 publication Critical patent/WO1999037121A1/en
Priority to BG104543A priority patent/BG104543A/bg
Priority to NO20003705A priority patent/NO20003705L/no
Priority to HK00107658A priority patent/HK1029247A1/xx

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
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone
    • 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
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/15—Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops

Definitions

  • a suitable acoustic panel member may be transparent or translucent .
  • Typical panel members may be generally polygonal, often substantially rectangular.
  • Plural transducer means may be at or near different edges, at least for substantially rectangular panel members.
  • the or each transducer may be piezo-electric, electrostatic or electro-mechanical.
  • the or each transducer may be arranged to launch compression waves into the panel edge, and/or to deflect the panel edge laterally to launch transverse bending waves along a panel edge, and/or to apply torsion across a panel corner, and/or to produce linear deflection of a local region of the panel .
  • mean square deviation assessment As aid to assessment at least of smoothness of power output, it is further proposed herein to use techniques based on mean square deviation from some reference.
  • Use of the inverse of mean square deviation has the benefit of presenting smoothness for assessment according directly to positive values and/or representations.
  • a suitable reference can be individual to each case considered, say a median-based, such as represented graphically by a smoothed line through actual measured power output over a frequency range of interest. It is significantly helpful to mean square deviation assessment for the reference to have a be normalised standard format; and for the measured acoustic power output to be adjusted to fit that standard format.
  • Beneficial such control provision includes significant clearance to local planar members (say about 1 - 3 centimetre) and/or slots or other apertures in adjacent peripheral framing or support provision or grille elements. It is further feasible and advantageous deliberately to arrange for such as mechanical damping to result in acoustic modification including loss in the area 81, or even also marginally thereof, not to be obstructed, at least for higher frequencies. This may be done by choice of materials, e.g. monolithic polycarbonate or acrylic and/or suitable surface coating or laminated construction. Resulting effective concentration of acoustic radiation to marginal regions about plural drive transducers particularly facilitates reproduction of more than one sound channel, at least for near- field listening as for playing computer games or like localised virtual sound stage applications. Further away, merging even of multiple as-energised sound sources need not be problematic when summed, at least for such as audio visual presentations .

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
PCT/GB1999/000143 1998-01-20 1999-01-15 Active acoustic devices comprising panel members WO1999037121A1 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
HU0102858A HUP0102858A3 (en) 1998-01-20 1999-01-15 Active acoustic devices comprising panel members
EP99901055A EP1050190B1 (en) 1998-01-20 1999-01-15 Active acoustic devices comprising panel members
JP2000540693A JP4173283B2 (ja) 1998-01-20 1999-01-15 パネル部材を備えた能動音響機器
CA002318292A CA2318292A1 (en) 1998-01-20 1999-01-15 Active acoustic devices comprising panel members
EA200000781A EA200000781A1 (ru) 1998-01-20 1999-01-15 Активные акустические устройства, содержащие панельные элементы
AT99901055T ATE280482T1 (de) 1998-01-20 1999-01-15 Aktive akustische vorrichtungen mit plattenförmigen elementen
DE69921295T DE69921295T8 (de) 1998-01-20 1999-01-15 Aktive akustische Vorrichtungen mit plattenförmigen Elementen
NZ504133A NZ504133A (en) 1998-01-20 1999-01-15 Active acoustic devices with edge of panel member clamped to effect resonant bending wave modes
AU20681/99A AU747693B2 (en) 1998-01-20 1999-01-15 Active acoustic devices comprising panel members
BR9907145-2A BR9907145A (pt) 1998-01-20 1999-01-15 Dispositivos acústicos ativos que compreendem elementos de painel
PL99341377A PL341377A1 (en) 1998-01-20 1999-01-15 Active acoustic device incorporating panel-like components
CN998019070A CN1287766B (zh) 1998-01-20 1999-01-15 具有板元件的主动式声音装置
IL13682099A IL136820A0 (en) 1998-01-20 1999-01-15 Active acoustic devices comprising panel members
SK1082-2000A SK10822000A3 (sk) 1998-01-20 1999-01-15 Aktívne akustické zariadenie obsahujúce panelové členy a spôsob jeho vyhotovenia
BG104543A BG104543A (bg) 1998-01-20 2000-06-16 Активни акустични устройства, включващи панелни елементи
NO20003705A NO20003705L (no) 1998-01-20 2000-07-19 Aktiv akustisk anordning omfattende en platedel
HK00107658A HK1029247A1 (en) 1998-01-20 2000-11-29 Active acoustic devices comprising panel members.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
GB9801054.9 1998-01-20
GBGB9801054.9A GB9801054D0 (en) 1998-01-20 1998-01-20 Acoustic panels
GB9801057.2 1998-01-20
GBGB9801057.2A GB9801057D0 (en) 1998-01-20 1998-01-20 Acoustic panels
GB9811100.8 1998-05-23
GBGB9811100.8A GB9811100D0 (en) 1998-05-23 1998-05-23 Acoustic panels
GB9813293.9 1998-06-20
GBGB9813293.9A GB9813293D0 (en) 1998-06-20 1998-06-20 Acoustic panels

Publications (1)

Publication Number Publication Date
WO1999037121A1 true WO1999037121A1 (en) 1999-07-22

Family

ID=27451742

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/000143 WO1999037121A1 (en) 1998-01-20 1999-01-15 Active acoustic devices comprising panel members

Country Status (23)

Country Link
EP (2) EP1050190B1 (ja)
JP (1) JP4173283B2 (ja)
KR (1) KR100646191B1 (ja)
CN (1) CN1287766B (ja)
AR (1) AR014430A1 (ja)
AT (1) ATE280482T1 (ja)
AU (1) AU747693B2 (ja)
BG (1) BG104543A (ja)
BR (1) BR9907145A (ja)
CA (1) CA2318292A1 (ja)
DE (2) DE69921295T8 (ja)
EA (1) EA200000781A1 (ja)
HK (1) HK1029247A1 (ja)
HU (1) HUP0102858A3 (ja)
IL (1) IL136820A0 (ja)
NO (1) NO20003705L (ja)
NZ (1) NZ504133A (ja)
PL (1) PL341377A1 (ja)
SK (1) SK10822000A3 (ja)
TR (1) TR200002108T2 (ja)
TW (1) TW432889B (ja)
WO (1) WO1999037121A1 (ja)
YU (1) YU36800A (ja)

Cited By (60)

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WO1999056497A1 (en) * 1998-04-28 1999-11-04 New Transducers Limited Method and apparatus for locating bending wave transducer means
WO2000002417A1 (en) * 1998-07-03 2000-01-13 New Transducers Limited Resonant panel-form loudspeaker
WO2000064217A1 (de) * 1999-04-19 2000-10-26 Siemens Aktiengesellschaft Flächenlautsprecher und verfahren zu dessen betrieb
GB2351200A (en) * 1999-06-15 2000-12-20 Nec Corp Off-centre or multipoint driven panel loudspeaker
EP1100288A2 (en) 1999-11-09 2001-05-16 Yamaha Corporation Acoustic radiator
WO2001074115A2 (en) * 2000-03-29 2001-10-04 Sound Advance Systems, Inc. Planar loudspeaker for cabin-like environment
WO2002015638A2 (en) * 2000-08-11 2002-02-21 New Transducers Limited Loudspeaker using a plurality of exciters
JP2002118894A (ja) * 2000-08-04 2002-04-19 Yamaha Corp 線状加振装置及び該加振装置を備えたスピーカ
GB2369232A (en) * 2000-11-18 2002-05-22 Talksign Ltd Flat panel loudspeaker with display surface.
US6411723B1 (en) 1998-06-22 2002-06-25 Slab Technology Limited Loudspeakers
GB2370716A (en) * 2000-09-19 2002-07-03 New Transducers Ltd A bending wave loudspeaker with the drivers located at a specific distance from the central plane of the diaphragm
WO2002093972A2 (en) * 2001-05-11 2002-11-21 New Transducers Limited Acoustic member for a loudspeaker comprising a component having a selected frequency dependence and method of making same
FR2825882A1 (fr) * 2001-06-12 2002-12-13 Intelligent Vibrations Sa Vitrage interactif avec fonctions microphones et haut-parleur
EP1271998A2 (en) * 2001-06-28 2003-01-02 Matsushita Electric Industrial Co., Ltd. Speaker system, mobile terminal device, and electronic device
EP1274272A1 (en) * 2001-06-19 2003-01-08 Chao-Hsien Lin The application of invisible speaker and the method for fabricating the same
GB2357214B (en) * 1998-09-09 2003-07-02 Fujitsu Ltd Loudspeaker device
DE10164509A1 (de) * 2001-12-28 2003-07-17 Webasto Vehicle Sys Int Gmbh Lautsprechersystem für die Audioanlage eines Kraftfahrzeuges
WO2003069950A1 (fr) 2002-02-15 2003-08-21 Sharp Kabushiki Kaisha Dispositif a carte son et appareil electronique dote de ce dispositif
EP1385354A1 (en) * 2002-07-25 2004-01-28 Kam, Tai-Yan Transparent panel-form loudspeaker
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WO2005067344A1 (en) * 2004-01-08 2005-07-21 New Transducers Limited Bending wave panel loudspeaker
WO2005089014A1 (en) * 2004-03-11 2005-09-22 New Transducers Limited Loudspeakers
US6983819B2 (en) 2002-04-02 2006-01-10 Awi Licensing Company Entertainment sound panels
WO2006003166A1 (de) * 2004-07-02 2006-01-12 Siemens Aktiengesellschaft Audiovisuelle anordnung
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US7149318B2 (en) 2000-01-24 2006-12-12 New Transducers Limited Resonant element transducer
US7151837B2 (en) 2000-01-27 2006-12-19 New Transducers Limited Loudspeaker
WO2007065909A1 (fr) * 2005-12-07 2007-06-14 Agc Flat Glass Europe Sa Vitrage generateur de sons
US7426804B2 (en) 2002-02-06 2008-09-23 Andersen Corporation Specialty display window
US7460679B2 (en) 2003-10-06 2008-12-02 Panasonic Corporation Flat panel speaker system with a coated diaphragm
US7548854B2 (en) 2002-01-31 2009-06-16 Awi Licensing Company Architectural sound enhancement with pre-filtered masking sound
GB2471474A (en) * 2009-06-30 2011-01-05 New Transducers Ltd Method of making an actuator
US8389120B2 (en) 2005-12-07 2013-03-05 Agc Glass Europe Sound-generating glazing
EP2282556A3 (en) * 2009-07-30 2014-07-23 Thomson Licensing Display device and audio output device
WO2014153252A2 (en) * 2013-03-14 2014-09-25 Lewis Athanas Acoustic transducer and method for driving same
WO2014163894A3 (en) * 2013-03-13 2015-10-29 Parametric Sound Corporation Substantially planate parametric emitter and associated methods
US9564146B2 (en) 2014-08-01 2017-02-07 Bongiovi Acoustics Llc System and method for digital signal processing in deep diving environment
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
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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
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Cited By (102)

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WO1999056497A1 (en) * 1998-04-28 1999-11-04 New Transducers Limited Method and apparatus for locating bending wave transducer means
US6411723B1 (en) 1998-06-22 2002-06-25 Slab Technology Limited Loudspeakers
US7174025B2 (en) 1998-07-03 2007-02-06 New Transducers Limited Resonant panel-form loudspeaker
WO2000002417A1 (en) * 1998-07-03 2000-01-13 New Transducers Limited Resonant panel-form loudspeaker
GB2357214B (en) * 1998-09-09 2003-07-02 Fujitsu Ltd Loudspeaker device
WO2000064217A1 (de) * 1999-04-19 2000-10-26 Siemens Aktiengesellschaft Flächenlautsprecher und verfahren zu dessen betrieb
AU767985B2 (en) * 1999-04-19 2003-11-27 Puren Gmbh Flat surface loudspeaker and method for operating the same
GB2351200A (en) * 1999-06-15 2000-12-20 Nec Corp Off-centre or multipoint driven panel loudspeaker
US6554098B1 (en) 1999-06-15 2003-04-29 Nec Corporation Panel speaker with wide free space
EP1100288A3 (en) * 1999-11-09 2008-03-26 Yamaha Corporation Acoustic radiator
EP1100288A2 (en) 1999-11-09 2001-05-16 Yamaha Corporation Acoustic radiator
US7149318B2 (en) 2000-01-24 2006-12-12 New Transducers Limited Resonant element transducer
US7684576B2 (en) 2000-01-24 2010-03-23 New Transducers Limited Resonant element transducer
US7151837B2 (en) 2000-01-27 2006-12-19 New Transducers Limited Loudspeaker
WO2001074115A3 (en) * 2000-03-29 2002-05-02 Sound Advance Syst Inc Planar loudspeaker for cabin-like environment
US6721436B1 (en) 2000-03-29 2004-04-13 Sound Advance Systems, Inc. Remote edge-driven panel speaker
WO2001074115A2 (en) * 2000-03-29 2001-10-04 Sound Advance Systems, Inc. Planar loudspeaker for cabin-like environment
JP2002118894A (ja) * 2000-08-04 2002-04-19 Yamaha Corp 線状加振装置及び該加振装置を備えたスピーカ
JP4683367B2 (ja) * 2000-08-04 2011-05-18 ヤマハ株式会社 線状加振装置及び該加振装置を備えたスピーカ
GB2368486B (en) * 2000-08-11 2004-03-03 New Transducers Ltd Loudspeaker
WO2002015638A3 (en) * 2000-08-11 2002-11-14 New Transducers Ltd Loudspeaker using a plurality of exciters
WO2002015638A2 (en) * 2000-08-11 2002-02-21 New Transducers Limited Loudspeaker using a plurality of exciters
GB2370716A (en) * 2000-09-19 2002-07-03 New Transducers Ltd A bending wave loudspeaker with the drivers located at a specific distance from the central plane of the diaphragm
GB2369232B (en) * 2000-11-18 2005-01-12 Talksign Ltd Display signs
GB2369232A (en) * 2000-11-18 2002-05-22 Talksign Ltd Flat panel loudspeaker with display surface.
WO2002041287A2 (en) * 2000-11-18 2002-05-23 Talksign Limited Display signs
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CN1287766A (zh) 2001-03-14
DE69921295T8 (de) 2006-07-06
DE69839134T2 (de) 2009-02-12
DE69921295D1 (de) 2004-11-25
KR100646191B1 (ko) 2006-11-17
JP2002510182A (ja) 2002-04-02
AR014430A1 (es) 2001-02-28
BG104543A (bg) 2001-01-31
AU2068199A (en) 1999-08-02
KR20010024874A (ko) 2001-03-26
TR200002108T2 (tr) 2000-11-21
JP4173283B2 (ja) 2008-10-29
TW432889B (en) 2001-05-01
PL341377A1 (en) 2001-04-09
EP1414266B1 (en) 2008-02-13
ATE280482T1 (de) 2004-11-15
HUP0102858A3 (en) 2003-03-28
CN1287766B (zh) 2010-06-23
EA200000781A1 (ru) 2000-12-25
YU36800A (sh) 2002-03-18
NO20003705L (no) 2000-09-20
EP1050190A1 (en) 2000-11-08
HUP0102858A2 (hu) 2001-12-28
BR9907145A (pt) 2000-10-24
DE69921295T2 (de) 2006-02-09
EP1414266A3 (en) 2006-08-16
DE69839134D1 (de) 2008-03-27
AU747693B2 (en) 2002-05-16
EP1050190B1 (en) 2004-10-20
IL136820A0 (en) 2001-06-14
NZ504133A (en) 2002-03-28
HK1029247A1 (en) 2001-03-23
EP1414266A2 (en) 2004-04-28
SK10822000A3 (sk) 2000-12-11
NO20003705D0 (no) 2000-07-19
CA2318292A1 (en) 1999-07-22

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