GB2397720B - Improvements relating to acoustic coupling - Google Patents

Improvements relating to acoustic coupling

Info

Publication number
GB2397720B
GB2397720B GB0400961A GB0400961A GB2397720B GB 2397720 B GB2397720 B GB 2397720B GB 0400961 A GB0400961 A GB 0400961A GB 0400961 A GB0400961 A GB 0400961A GB 2397720 B GB2397720 B GB 2397720B
Authority
GB
United Kingdom
Prior art keywords
improvements relating
acoustic coupling
acoustic
coupling
relating
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.)
Expired - Fee Related
Application number
GB0400961A
Other versions
GB0400961D0 (en
GB2397720A (en
Inventor
Ian Hynd
Norman Harris
Jordi Munoz Frigola
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.)
HARRIS HYND Ltd
SFX TECHNOLOGIES Ltd
Original Assignee
HARRIS HYND Ltd
SFX TECHNOLOGIES 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 HARRIS HYND Ltd, SFX TECHNOLOGIES Ltd filed Critical HARRIS HYND Ltd
Publication of GB0400961D0 publication Critical patent/GB0400961D0/en
Publication of GB2397720A publication Critical patent/GB2397720A/en
Application granted granted Critical
Publication of GB2397720B publication Critical patent/GB2397720B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
    • 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
GB0400961A 2003-01-16 2004-01-16 Improvements relating to acoustic coupling Expired - Fee Related GB2397720B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0301003A GB0301003D0 (en) 2003-01-16 2003-01-16 Interactive display panel

Publications (3)

Publication Number Publication Date
GB0400961D0 GB0400961D0 (en) 2004-02-18
GB2397720A GB2397720A (en) 2004-07-28
GB2397720B true GB2397720B (en) 2006-10-11

Family

ID=9951267

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0301003A Ceased GB0301003D0 (en) 2003-01-16 2003-01-16 Interactive display panel
GB0400961A Expired - Fee Related GB2397720B (en) 2003-01-16 2004-01-16 Improvements relating to acoustic coupling

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0301003A Ceased GB0301003D0 (en) 2003-01-16 2003-01-16 Interactive display panel

Country Status (1)

Country Link
GB (2) GB0301003D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1949753A1 (en) 2005-10-21 2008-07-30 SFX Technologies Limited Improvements to audio devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2102657A (en) * 1981-07-24 1983-02-02 Nat Res Dev Ultrasonic transducers
US4905700A (en) * 1985-06-04 1990-03-06 Ed. Geistlich Ag Fur Chemische Industrie Method of transmitting ultrasound into a body
EP0800788A1 (en) * 1996-04-10 1997-10-15 Lec Tec Corporation Solid ultrasonic biomedical couplant sheet
US5827198A (en) * 1996-11-21 1998-10-27 Flowscan, Inc. Low-cost, disposable, polymer-based, differential output flexure sensor and method of fabricating same
US6039694A (en) * 1998-06-25 2000-03-21 Sonotech, Inc. Coupling sheath for ultrasound transducers
WO2002076141A2 (en) * 2001-03-19 2002-09-26 Newlands Technology Limited Magnetostrictive actuator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2102657A (en) * 1981-07-24 1983-02-02 Nat Res Dev Ultrasonic transducers
US4905700A (en) * 1985-06-04 1990-03-06 Ed. Geistlich Ag Fur Chemische Industrie Method of transmitting ultrasound into a body
EP0800788A1 (en) * 1996-04-10 1997-10-15 Lec Tec Corporation Solid ultrasonic biomedical couplant sheet
US5827198A (en) * 1996-11-21 1998-10-27 Flowscan, Inc. Low-cost, disposable, polymer-based, differential output flexure sensor and method of fabricating same
US6039694A (en) * 1998-06-25 2000-03-21 Sonotech, Inc. Coupling sheath for ultrasound transducers
WO2002076141A2 (en) * 2001-03-19 2002-09-26 Newlands Technology Limited Magnetostrictive actuator

Also Published As

Publication number Publication date
GB0400961D0 (en) 2004-02-18
GB0301003D0 (en) 2003-02-19
GB2397720A (en) 2004-07-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110116