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GB2381991B - Method and apparatus for equalising transfer functions of linear electro-acoustic systems - Google Patents

Method and apparatus for equalising transfer functions of linear electro-acoustic systems

Info

Publication number
GB2381991B
GB2381991B GB0225703A GB0225703A GB2381991B GB 2381991 B GB2381991 B GB 2381991B GB 0225703 A GB0225703 A GB 0225703A GB 0225703 A GB0225703 A GB 0225703A GB 2381991 B GB2381991 B GB 2381991B
Authority
GB
United Kingdom
Prior art keywords
equalising
transfer functions
acoustic systems
linear electro
electro
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 - Lifetime
Application number
GB0225703A
Other versions
GB2381991A (en
GB0225703D0 (en
Inventor
Paul Edwin Doust
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.)
BLACKNOR TECHNOLOGY Ltd
Thorn Security Ltd
Original Assignee
BLACKNOR TECHNOLOGY Ltd
Thorn Security 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 BLACKNOR TECHNOLOGY Ltd, Thorn Security Ltd filed Critical BLACKNOR TECHNOLOGY Ltd
Publication of GB0225703D0 publication Critical patent/GB0225703D0/en
Publication of GB2381991A publication Critical patent/GB2381991A/en
Application granted granted Critical
Publication of GB2381991B publication Critical patent/GB2381991B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Amplifiers (AREA)
GB0225703A 2000-05-04 2001-05-04 Method and apparatus for equalising transfer functions of linear electro-acoustic systems Expired - Lifetime GB2381991B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0010820A GB2362058A (en) 2000-05-04 2000-05-04 Equalising transfer functions of linear electro-acoustic systems
PCT/GB2001/001992 WO2001083122A1 (en) 2000-05-04 2001-05-04 Method and apparatus for equalising transfer functions of linear electro-acoustic systems

Publications (3)

Publication Number Publication Date
GB0225703D0 GB0225703D0 (en) 2002-12-11
GB2381991A GB2381991A (en) 2003-05-14
GB2381991B true GB2381991B (en) 2004-03-24

Family

ID=9890995

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0010820A Withdrawn GB2362058A (en) 2000-05-04 2000-05-04 Equalising transfer functions of linear electro-acoustic systems
GB0225703A Expired - Lifetime GB2381991B (en) 2000-05-04 2001-05-04 Method and apparatus for equalising transfer functions of linear electro-acoustic systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0010820A Withdrawn GB2362058A (en) 2000-05-04 2000-05-04 Equalising transfer functions of linear electro-acoustic systems

Country Status (3)

Country Link
AU (1) AU2001252417A1 (en)
GB (2) GB2362058A (en)
WO (1) WO2001083122A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO330292B1 (en) 2007-09-12 2011-03-21 Det Norske Veritas As Acoustic thickness paints using gas as a coupling medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860892A (en) * 1974-02-25 1975-01-14 Us Of Americas As Represented Cascade transversal filter amplitude-compensation network
GB1512014A (en) * 1974-06-21 1978-05-24 Univ Leeds Ind Service Ltd Method of attenuating longitudinal compression waves travelling in a gas filled duct
US4709360A (en) * 1985-11-12 1987-11-24 Sparton Corporation Hydrophone transducer with negative feedback system
US4888811A (en) * 1986-08-08 1989-12-19 Yamaha Corporation Loudspeaker device
US5438625A (en) * 1991-04-09 1995-08-01 Jbl, Incorporated Arrangement to correct the linear and nonlinear transfer behavior or electro-acoustical transducers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316060A (en) * 1980-01-04 1982-02-16 Dbx, Inc. Equalizing system
US5065370A (en) * 1990-11-28 1991-11-12 The United States Of America As Represented By The Secretary Of The Navy Programmable pulse shaper for sonobouy apparatus
DE4334040C2 (en) * 1993-10-06 1996-07-11 Klippel Wolfgang Circuit arrangement for the independent correction of the transmission behavior of electrodynamic sound transmitters without an additional mechanical or acoustic sensor
US5774417A (en) * 1996-10-25 1998-06-30 Atlantic Richfield Company Amplitude and phase compensation in dual-sensor ocean bottom cable seismic data processing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860892A (en) * 1974-02-25 1975-01-14 Us Of Americas As Represented Cascade transversal filter amplitude-compensation network
GB1512014A (en) * 1974-06-21 1978-05-24 Univ Leeds Ind Service Ltd Method of attenuating longitudinal compression waves travelling in a gas filled duct
US4709360A (en) * 1985-11-12 1987-11-24 Sparton Corporation Hydrophone transducer with negative feedback system
US4888811A (en) * 1986-08-08 1989-12-19 Yamaha Corporation Loudspeaker device
US5438625A (en) * 1991-04-09 1995-08-01 Jbl, Incorporated Arrangement to correct the linear and nonlinear transfer behavior or electro-acoustical transducers

Also Published As

Publication number Publication date
GB2381991A (en) 2003-05-14
GB0010820D0 (en) 2000-06-28
GB0225703D0 (en) 2002-12-11
WO2001083122A1 (en) 2001-11-08
AU2001252417A1 (en) 2001-11-12
GB2362058A (en) 2001-11-07

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20131128 AND 20131204

PE20 Patent expired after termination of 20 years

Expiry date: 20210503