HK1035988A1 - Acoustic device according to bending wave principle - Google Patents
Acoustic device according to bending wave principleInfo
- Publication number
- HK1035988A1 HK1035988A1 HK01106542A HK01106542A HK1035988A1 HK 1035988 A1 HK1035988 A1 HK 1035988A1 HK 01106542 A HK01106542 A HK 01106542A HK 01106542 A HK01106542 A HK 01106542A HK 1035988 A1 HK1035988 A1 HK 1035988A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- acoustic device
- bending wave
- wave principle
- resonant modes
- coupled
- Prior art date
Links
- 238000005452 bending Methods 0.000 title abstract 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
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 Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (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.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9824256.3A GB9824256D0 (en) | 1998-11-06 | 1998-11-06 | Acoustic devices etc. |
PCT/GB1999/003656 WO2000028781A1 (en) | 1998-11-06 | 1999-11-05 | Acoustic device according to bending wave principle |
Publications (1)
Publication Number | Publication Date |
---|---|
HK1035988A1 true HK1035988A1 (en) | 2001-12-14 |
Family
ID=10841891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK01106542A HK1035988A1 (en) | 1998-11-06 | 2001-09-15 | Acoustic device according to bending wave principle |
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)
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 |
BR0208686A (en) * | 2001-04-05 | 2004-03-30 | New Transducers Ltd | Speaker |
US7245729B2 (en) | 2001-04-05 | 2007-07-17 | New Transducers Limited | Loudspeaker |
US6813362B2 (en) | 2001-04-05 | 2004-11-02 | New Transducers Limited | Loudspeaker and method of making same |
JP2006121360A (en) * | 2004-10-21 | 2006-05-11 | Authentic Ltd | Panel type speaker |
Family Cites Families (6)
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 |
BR9807064A (en) * | 1997-01-09 | 2000-05-02 | New Transducers Ltd | Loudspeakers |
-
1998
- 1998-11-06 GB GBGB9824256.3A patent/GB9824256D0/en not_active Ceased
-
1999
- 1999-11-05 CN CNB998128228A patent/CN1135058C/en not_active Expired - Fee Related
- 1999-11-05 EP EP99952703A patent/EP1125473B1/en not_active Expired - Lifetime
- 1999-11-05 WO PCT/GB1999/003656 patent/WO2000028781A1/en not_active Application Discontinuation
- 1999-11-05 CA CA002349861A patent/CA2349861A1/en not_active Abandoned
- 1999-11-05 IL IL14242999A patent/IL142429A0/en unknown
- 1999-11-05 DE DE69906775T patent/DE69906775T2/en not_active Expired - Fee Related
- 1999-11-05 JP JP2000581852A patent/JP2002530032A/en active Pending
- 1999-11-05 BR BR9915114-6A patent/BR9915114A/en not_active IP Right Cessation
- 1999-11-05 AU AU64813/99A patent/AU745969B2/en not_active Ceased
- 1999-11-05 NZ NZ510971A patent/NZ510971A/en unknown
- 1999-11-05 ES ES99952703T patent/ES2197682T3/en not_active Expired - Lifetime
- 1999-11-05 AT AT99952703T patent/ATE237211T1/en not_active IP Right Cessation
- 1999-11-05 KR KR1020017005652A patent/KR20010080941A/en not_active Application Discontinuation
- 1999-11-11 TW TW088119786A patent/TW462202B/en not_active IP Right Cessation
-
2001
- 2001-04-04 ZA ZA200102755A patent/ZA200102755B/en unknown
- 2001-09-15 HK HK01106542A patent/HK1035988A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2000028781A1 (en) | 2000-05-18 |
CA2349861A1 (en) | 2000-05-18 |
AU745969B2 (en) | 2002-04-11 |
IL142429A0 (en) | 2002-03-10 |
GB9824256D0 (en) | 1998-12-30 |
NZ510971A (en) | 2002-03-01 |
ZA200102755B (en) | 2001-10-08 |
AU6481399A (en) | 2000-05-29 |
ATE237211T1 (en) | 2003-04-15 |
JP2002530032A (en) | 2002-09-10 |
EP1125473A1 (en) | 2001-08-22 |
CN1325606A (en) | 2001-12-05 |
DE69906775T2 (en) | 2004-01-29 |
DE69906775D1 (en) | 2003-05-15 |
BR9915114A (en) | 2001-07-31 |
CN1135058C (en) | 2004-01-14 |
ES2197682T3 (en) | 2004-01-01 |
EP1125473B1 (en) | 2003-04-09 |
KR20010080941A (en) | 2001-08-25 |
TW462202B (en) | 2001-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20061105 |