ATE68903T1 - Geraeuschreduzierungsvorrichtung. - Google Patents

Geraeuschreduzierungsvorrichtung.

Info

Publication number
ATE68903T1
ATE68903T1 AT86305415T AT86305415T ATE68903T1 AT E68903 T1 ATE68903 T1 AT E68903T1 AT 86305415 T AT86305415 T AT 86305415T AT 86305415 T AT86305415 T AT 86305415T AT E68903 T1 ATE68903 T1 AT E68903T1
Authority
AT
Austria
Prior art keywords
noise
microphone
output
pick
cancelling
Prior art date
Application number
AT86305415T
Other languages
English (en)
Inventor
Robert Christopher Twiney
Anthony James Holden
Original Assignee
Siemens Plessey Electronic
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 Siemens Plessey Electronic filed Critical Siemens Plessey Electronic
Application granted granted Critical
Publication of ATE68903T1 publication Critical patent/ATE68903T1/de

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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17821—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the input signals only
    • G10K11/17825—Error signals
    • 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17875—General system configurations using an error signal without a reference signal, e.g. pure feedback
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3011—Single acoustic input
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3012—Algorithms
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3013—Analogue, i.e. using analogue computers or circuits
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3039—Nonlinear, e.g. clipping, numerical truncation, thresholding or variable input and output gain

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Noise Elimination (AREA)
  • Surgical Instruments (AREA)
  • Control Of Amplification And Gain Control (AREA)
AT86305415T 1985-07-13 1986-07-14 Geraeuschreduzierungsvorrichtung. ATE68903T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB858517716A GB8517716D0 (en) 1985-07-13 1985-07-13 Noise reduction arrangements
EP86305415A EP0212840B1 (de) 1985-07-13 1986-07-14 Geräuschreduzierungsvorrichtung

Publications (1)

Publication Number Publication Date
ATE68903T1 true ATE68903T1 (de) 1991-11-15

Family

ID=10582241

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86305415T ATE68903T1 (de) 1985-07-13 1986-07-14 Geraeuschreduzierungsvorrichtung.

Country Status (4)

Country Link
EP (1) EP0212840B1 (de)
AT (1) ATE68903T1 (de)
DE (1) DE3682147D1 (de)
GB (1) GB8517716D0 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8717043D0 (en) * 1987-07-20 1987-08-26 Plessey Co Plc Noise reduction systems
CA1299725C (en) * 1987-07-20 1992-04-28 Robert Christopher Twiney Noise reduction systems
WO1990002513A1 (en) * 1988-09-16 1990-03-22 Noise Cancellation Technologies, Inc. Active attenuation system for medical patients
US5091954A (en) * 1989-03-01 1992-02-25 Sony Corporation Noise reducing receiver device
US5117461A (en) * 1989-08-10 1992-05-26 Mnc, Inc. Electroacoustic device for hearing needs including noise cancellation
US5001763A (en) * 1989-08-10 1991-03-19 Mnc Inc. Electroacoustic device for hearing needs including noise cancellation
US5134659A (en) * 1990-07-10 1992-07-28 Mnc, Inc. Method and apparatus for performing noise cancelling and headphoning
US5313945A (en) * 1989-09-18 1994-05-24 Noise Cancellation Technologies, Inc. Active attenuation system for medical patients
GB9003938D0 (en) * 1990-02-21 1990-04-18 Ross Colin F Noise reducing system
US5182774A (en) * 1990-07-20 1993-01-26 Telex Communications, Inc. Noise cancellation headset
GB9107416D0 (en) * 1991-04-09 1991-05-22 Active Noise & Vibration Tech Active noise reduction
GB2274757A (en) * 1993-01-28 1994-08-03 Secr Defence Ear defenders employing active noise control
AU7355594A (en) * 1993-06-23 1995-01-17 Noise Cancellation Technologies, Inc. Variable gain active noise cancellation system with improved residual noise sensing
US5524058A (en) * 1994-01-12 1996-06-04 Mnc, Inc. Apparatus for performing noise cancellation in telephonic devices and headwear
GB2289960A (en) * 1994-06-03 1995-12-06 Mazda Motor Adaptive gain control
US5675658A (en) * 1995-07-27 1997-10-07 Brittain; Thomas Paige Active noise reduction headset
US20010036283A1 (en) * 2000-03-07 2001-11-01 Mark Donaldson Active noise reduction system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2097629B (en) * 1981-04-15 1984-09-26 Nat Res Dev Methods and apparatus for active sound control

Also Published As

Publication number Publication date
EP0212840A2 (de) 1987-03-04
EP0212840B1 (de) 1991-10-23
GB8517716D0 (en) 1985-08-21
DE3682147D1 (de) 1991-11-28
EP0212840A3 (en) 1987-09-23

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EEFA Change of the company name
REN Ceased due to non-payment of the annual fee