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GB2019695B - Ambient sound reduction - Google Patents

Ambient sound reduction

Info

Publication number
GB2019695B
GB2019695B GB7911127A GB7911127A GB2019695B GB 2019695 B GB2019695 B GB 2019695B GB 7911127 A GB7911127 A GB 7911127A GB 7911127 A GB7911127 A GB 7911127A GB 2019695 B GB2019695 B GB 2019695B
Authority
GB
United Kingdom
Prior art keywords
ambient sound
sound reduction
reduction
ambient
sound
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
Application number
GB7911127A
Other versions
GB2019695A (en
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of GB2019695A publication Critical patent/GB2019695A/en
Application granted granted Critical
Publication of GB2019695B publication Critical patent/GB2019695B/en
Expired 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
    • G10K11/16—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
    • 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
    • G10K2210/321—Physical
    • G10K2210/3212—Actuator details, e.g. composition or microstructure
    • 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
    • G10K2210/321—Physical
    • G10K2210/3217—Collocated sensor and cancelling actuator, e.g. "virtual earth" designs

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB7911127A 1978-04-01 1979-03-30 Ambient sound reduction Expired GB2019695B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2814093A DE2814093C2 (en) 1978-04-01 1978-04-01 Anti-noise generator

Publications (2)

Publication Number Publication Date
GB2019695A GB2019695A (en) 1979-10-31
GB2019695B true GB2019695B (en) 1982-09-02

Family

ID=6035916

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7911127A Expired GB2019695B (en) 1978-04-01 1979-03-30 Ambient sound reduction

Country Status (3)

Country Link
DE (1) DE2814093C2 (en)
FR (1) FR2421527A1 (en)
GB (1) GB2019695B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208891A (en) * 1981-06-17 1982-12-22 Yaskawa Electric Mfg Co Ltd Control system of motor driven machine
NO851699L (en) * 1985-04-29 1986-10-30 Knut Boenke PROCEDURE AND DEVICE FOR MUTING SOUND AND Acoustic Noise.
GB8704314D0 (en) * 1987-02-24 1987-04-01 Scient Generics Ltd Noise attenuation
JPS647797A (en) * 1987-06-30 1989-01-11 Bridgestone Corp Sound insulation device
FR2632474B1 (en) * 1988-06-01 1991-04-26 Saint Louis Inst DEVICE FOR ACTIVE MITIGATION OF VIBRATION AND IN PARTICULAR NOISE WITHOUT ACOUSTIC DELAY
DE4133407C2 (en) * 1991-10-09 1994-01-20 Deutsche Aerospace Arrangement for compensating the sound emitted by a vibrating wall
GB2260874A (en) * 1991-10-21 1993-04-28 Marconi Gec Ltd A sound control device
GB2267411A (en) * 1992-05-26 1993-12-01 Mark John Snee Noise reducing earphone with combined microphone/loudspeaker
GB2312972B (en) * 1996-05-11 2000-02-09 Marconi Gec Ltd Vibration control
FI963988A0 (en) 1996-10-04 1996-10-04 Kari Johannes Kirjavainen Ljud- och vibrationsisoleringsfoerfarande
DE29804584U1 (en) * 1997-03-18 1998-05-14 Daimler-Benz Aktiengesellschaft, 70567 Stuttgart Active acoustic resonator for noise reduction
DE102004041214B4 (en) * 2004-08-26 2006-07-06 Helmut-Schmidt-Universität Universität der Bundeswehr Hamburg Sound reduction device for noise source in aircraft cabin has electroacoustic transducer comprising suspended membrane having spring stiffness and adjustment unit arranged to change spring stiffness
EP1630788B1 (en) 2004-08-26 2012-04-18 Airbus Operations GmbH Device and method for reducing sound of a noise source in narrow frequency ranges
DE102014016397A1 (en) 2014-11-05 2016-05-12 Gunter Henkel Sleep hood: Device for reducing or eliminating snoring and sleeping sounds
DE202014008783U1 (en) 2014-11-05 2014-12-12 Gunter Henkel Sleep hood - Device for reducing or eliminating snoring and sleeping sounds
DE102018209043A1 (en) 2018-06-07 2019-12-12 Zf Friedrichshafen Ag Evaluation device, sound transducer, vehicle, method and computer program product for damping noise components in noise outside the vehicle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1098730B (en) * 1957-07-01 1961-02-02 Licentia Gmbh Device for dampening the noise emitted by the housing
DE1918741A1 (en) * 1969-04-12 1970-10-15 Messerschmitt Boelkow Blohm Soundproofing by sound grille
GB1500002A (en) * 1975-05-22 1978-02-08 Plessey Co Ltd Transducer circuit arrangements

Also Published As

Publication number Publication date
DE2814093C2 (en) 1980-05-14
GB2019695A (en) 1979-10-31
FR2421527A1 (en) 1979-10-26
DE2814093B1 (en) 1979-08-23

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Legal Events

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