GB8331340D0 - Active acoustic attenuators - Google Patents

Active acoustic attenuators

Info

Publication number
GB8331340D0
GB8331340D0 GB838331340A GB8331340A GB8331340D0 GB 8331340 D0 GB8331340 D0 GB 8331340D0 GB 838331340 A GB838331340 A GB 838331340A GB 8331340 A GB8331340 A GB 8331340A GB 8331340 D0 GB8331340 D0 GB 8331340D0
Authority
GB
United Kingdom
Prior art keywords
active acoustic
acoustic attenuators
attenuators
active
acoustic
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.)
Withdrawn
Application number
GB838331340A
Other versions
GB2130651A (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.)
Lord Corp
Original Assignee
Lord Corp
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 Lord Corp filed Critical Lord Corp
Publication of GB8331340D0 publication Critical patent/GB8331340D0/en
Publication of GB2130651A publication Critical patent/GB2130651A/en
Withdrawn legal-status Critical Current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
    • 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
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • 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
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G10K11/17881—General system configurations using both a reference signal and an error signal the reference signal being an acoustic signal, e.g. recorded with a microphone
    • 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
    • G10K2210/10—Applications
    • G10K2210/112—Ducts
    • 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
    • G10K2210/3045—Multiple acoustic inputs, single acoustic output
    • 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
    • G10K2210/3229—Transducers
GB08331340A 1982-11-26 1983-11-24 Improvements relating to active acoustic attenuators Withdrawn GB2130651A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44452482A 1982-11-26 1982-11-26

Publications (2)

Publication Number Publication Date
GB8331340D0 true GB8331340D0 (en) 1984-01-04
GB2130651A GB2130651A (en) 1984-06-06

Family

ID=23765272

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08331340A Withdrawn GB2130651A (en) 1982-11-26 1983-11-24 Improvements relating to active acoustic attenuators

Country Status (4)

Country Link
JP (1) JPS59133595A (en)
DE (1) DE3342928A1 (en)
FR (1) FR2536891A2 (en)
GB (1) GB2130651A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8404494D0 (en) * 1984-02-21 1984-03-28 Swinbanks M A Attenuation of sound waves
DE3541201A1 (en) * 1985-11-21 1987-05-27 Voith Gmbh J M Device for oscillation damping
JP2890196B2 (en) * 1986-10-07 1999-05-10 アダプティブ コントロール リミテッド Active vibration control device or related improvements
US4736431A (en) * 1986-10-23 1988-04-05 Nelson Industries, Inc. Active attenuation system with increased dynamic range
US4805733A (en) * 1987-07-07 1989-02-21 Nippondenso Co., Ltd. Active silencer
JPH0727389B2 (en) * 1987-08-28 1995-03-29 日立プラント建設株式会社 Electronic silencing system
JP2598483B2 (en) * 1988-09-05 1997-04-09 日立プラント建設株式会社 Electronic silencing system
DE3834853C2 (en) * 1988-10-13 1999-12-02 Bayerische Motoren Werke Ag Arrangement for reducing the noise level in the interior of a motor vehicle
EP0412853B1 (en) * 1989-08-11 1997-03-26 Bridgestone Corporation Active-type vibration control apparatus
JP2748626B2 (en) * 1989-12-29 1998-05-13 日産自動車株式会社 Active noise control device
US5251262A (en) * 1990-06-29 1993-10-05 Kabushiki Kaisha Toshiba Adaptive active noise cancellation apparatus
JP2750084B2 (en) * 1993-05-19 1998-05-13 三星電子株式会社 Noise control device for vacuum cleaner
DE4317403A1 (en) * 1993-05-26 1994-12-01 Nokia Deutschland Gmbh Arrangement for active sound damping
US5615868A (en) * 1995-10-04 1997-04-01 Bolt Beranek And Newman Inc. Active pneumatic mount
AU3206399A (en) * 1998-04-01 1999-10-18 Lord Corporation Dynamic system controller
DE10308414B4 (en) * 2003-02-27 2007-10-04 Bayerische Motoren Werke Ag Method for controlling an acoustic system in the vehicle
JP2010188752A (en) * 2009-02-16 2010-09-02 Panasonic Corp Noise reduction device
US10048151B2 (en) 2013-08-16 2018-08-14 Kevin Allan Dooley, Inc. Systems and methods for control of motion sickness within a moving structure due to infrasound pressures
DK3091415T3 (en) 2013-08-16 2018-11-26 Kevin Allan Dooley Inc SYSTEMS AND METHODS FOR MANAGING INFRAL SOUND PRESSURE
CN106469551A (en) * 2015-08-19 2017-03-01 中兴通讯股份有限公司 A kind of pipeline noise reduction system and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4025724A (en) * 1975-08-12 1977-05-24 Westinghouse Electric Corporation Noise cancellation apparatus
CH597294A5 (en) * 1976-02-19 1978-03-31 Ciba Geigy Ag
GB2113925B (en) * 1978-10-27 1983-11-30 Raychem Sa Nv Heat-recoverable articles
US4473906A (en) * 1980-12-05 1984-09-25 Lord Corporation Active acoustic attenuator
GB2069280B (en) * 1981-01-05 1984-02-22 Ross C F Process of testing for a sound control system
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
GB2130651A (en) 1984-06-06
FR2536891A2 (en) 1984-06-01
JPS59133595A (en) 1984-07-31
DE3342928A1 (en) 1984-05-30

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)