WO1999037121A1 - Active acoustic devices comprising panel members - Google Patents
Active acoustic devices comprising panel members Download PDFInfo
- 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
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 .
Abstract
Description
Claims
Priority Applications (17)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL13682099A IL136820A0 (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices comprising panel members |
CA002318292A CA2318292A1 (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices comprising panel members |
JP2000540693A JP4173283B2 (en) | 1998-01-20 | 1999-01-15 | Active acoustic device with panel member |
CN998019070A CN1287766B (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices comprising panel members |
AT99901055T ATE280482T1 (en) | 1998-01-20 | 1999-01-15 | ACTIVE ACOUSTIC DEVICES COMPRISING PLATE-SHAPED ELEMENTS |
AU20681/99A AU747693B2 (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 |
HU0102858A HUP0102858A3 (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices comprising panel members |
NZ504133A NZ504133A (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices with edge of panel member clamped to effect resonant bending wave modes |
EA200000781A EA200000781A1 (en) | 1998-01-20 | 1999-01-15 | ACTIVE ACOUSTIC DEVICES, CONTAINING PANEL ELEMENTS |
BR9907145-2A BR9907145A (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices that comprise panel elements |
DE69921295T DE69921295T8 (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices with plate-shaped elements |
SK1082-2000A SK10822000A3 (en) | 1998-01-20 | 1999-01-15 | Active acoustic devices comprising panel members |
PL99341377A PL341377A1 (en) | 1998-01-20 | 1999-01-15 | Active acoustic device incorporating panel-like components |
BG104543A BG104543A (en) | 1998-01-20 | 2000-06-16 | Active acoustic devices comprising panel members |
NO20003705A NO20003705L (en) | 1998-01-20 | 2000-07-19 | Active acoustic device comprising a plate part |
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 |
---|---|---|---|
GBGB9801054.9A GB9801054D0 (en) | 1998-01-20 | 1998-01-20 | Acoustic panels |
GBGB9801057.2A GB9801057D0 (en) | 1998-01-20 | 1998-01-20 | Acoustic panels |
GB9801054.9 | 1998-01-20 | ||
GB9801057.2 | 1998-01-20 | ||
GBGB9811100.8A GB9811100D0 (en) | 1998-05-23 | 1998-05-23 | Acoustic panels |
GB9811100.8 | 1998-05-23 | ||
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) | EP1414266B1 (en) |
JP (1) | JP4173283B2 (en) |
KR (1) | KR100646191B1 (en) |
CN (1) | CN1287766B (en) |
AR (1) | AR014430A1 (en) |
AT (1) | ATE280482T1 (en) |
AU (1) | AU747693B2 (en) |
BG (1) | BG104543A (en) |
BR (1) | BR9907145A (en) |
CA (1) | CA2318292A1 (en) |
DE (2) | DE69839134T2 (en) |
EA (1) | EA200000781A1 (en) |
HK (1) | HK1029247A1 (en) |
HU (1) | HUP0102858A3 (en) |
IL (1) | IL136820A0 (en) |
NO (1) | NO20003705L (en) |
NZ (1) | NZ504133A (en) |
PL (1) | PL341377A1 (en) |
SK (1) | SK10822000A3 (en) |
TR (1) | TR200002108T2 (en) |
TW (1) | TW432889B (en) |
WO (1) | WO1999037121A1 (en) |
YU (1) | YU36800A (en) |
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 (en) * | 1999-04-19 | 2000-10-26 | Siemens Aktiengesellschaft | 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 |
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 (en) * | 2000-08-04 | 2002-04-19 | Yamaha Corp | Linear excitation device and loudspeaker provided with the excitation device |
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 (en) * | 2001-06-12 | 2002-12-13 | Intelligent Vibrations Sa | User/machine interactive communications system having three piezoelectric transmitter/receivers detecting ultrasonic signals input detector/microphone providing and fourth detector audible band receiving. |
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 (en) * | 2001-12-28 | 2003-07-17 | Webasto Vehicle Sys Int Gmbh | Loudspeaker system for an audio facility in a motor vehicle, has a fixed window pane as membranes for a loudspeaker such as vehicle rear window or sunroof. |
WO2003069950A1 (en) | 2002-02-15 | 2003-08-21 | Sharp Kabushiki Kaisha | Card sound device and electronic apparatus having same |
EP1385354A1 (en) * | 2002-07-25 | 2004-01-28 | Kam, Tai-Yan | Transparent panel-form loudspeaker |
EP1480489A2 (en) * | 2003-05-23 | 2004-11-24 | Alps Electric Co., Ltd. | Exciting device for producing sound |
WO2004110096A1 (en) * | 2003-05-30 | 2004-12-16 | 3M Innovative Properties Company | Flat panel speaker |
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 (en) * | 2004-07-02 | 2006-01-12 | Siemens Aktiengesellschaft | Audiovisual arrangement |
US6988339B2 (en) | 2002-02-06 | 2006-01-24 | Andersen Corporation | Specialty media window |
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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 |
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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 |
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US3247925A (en) * | 1962-03-08 | 1966-04-26 | Lord Corp | Loudspeaker |
US3347335A (en) * | 1965-04-05 | 1967-10-17 | Bolt Beranek & Newman | Acoustic-wave apparatus |
JPS6161598A (en) * | 1984-09-03 | 1986-03-29 | Matsushita Electric Ind Co Ltd | Acoustic device |
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1999
- 1999-01-15 PL PL99341377A patent/PL341377A1/en unknown
- 1999-01-15 DE DE69839134T patent/DE69839134T2/en not_active Expired - Lifetime
- 1999-01-15 EA EA200000781A patent/EA200000781A1/en unknown
- 1999-01-15 YU YU36800A patent/YU36800A/en unknown
- 1999-01-15 AU AU20681/99A patent/AU747693B2/en not_active Ceased
- 1999-01-15 KR KR1020007007968A patent/KR100646191B1/en not_active IP Right Cessation
- 1999-01-15 BR BR9907145-2A patent/BR9907145A/en not_active IP Right Cessation
- 1999-01-15 SK SK1082-2000A patent/SK10822000A3/en unknown
- 1999-01-15 IL IL13682099A patent/IL136820A0/en unknown
- 1999-01-15 JP JP2000540693A patent/JP4173283B2/en not_active Expired - Lifetime
- 1999-01-15 CA CA002318292A patent/CA2318292A1/en not_active Abandoned
- 1999-01-15 HU HU0102858A patent/HUP0102858A3/en unknown
- 1999-01-15 WO PCT/GB1999/000143 patent/WO1999037121A1/en active IP Right Grant
- 1999-01-15 TR TR2000/02108T patent/TR200002108T2/en unknown
- 1999-01-15 EP EP04075008A patent/EP1414266B1/en not_active Expired - Lifetime
- 1999-01-15 EP EP99901055A patent/EP1050190B1/en not_active Expired - Lifetime
- 1999-01-15 DE DE69921295T patent/DE69921295T8/en active Active
- 1999-01-15 NZ NZ504133A patent/NZ504133A/en unknown
- 1999-01-15 CN CN998019070A patent/CN1287766B/en not_active Expired - Lifetime
- 1999-01-15 AT AT99901055T patent/ATE280482T1/en not_active IP Right Cessation
- 1999-01-19 AR ARP990100197A patent/AR014430A1/en not_active Application Discontinuation
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- 2000-11-29 HK HK00107658A patent/HK1029247A1/en not_active IP Right Cessation
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Cited By (102)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (en) * | 1999-04-19 | 2000-10-26 | Siemens Aktiengesellschaft | Flat surface loudspeaker and method for operating the same |
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 |
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