GB2126837B - Noise suppression - Google Patents

Noise suppression

Info

Publication number
GB2126837B
GB2126837B GB08322281A GB8322281A GB2126837B GB 2126837 B GB2126837 B GB 2126837B GB 08322281 A GB08322281 A GB 08322281A GB 8322281 A GB8322281 A GB 8322281A GB 2126837 B GB2126837 B GB 2126837B
Authority
GB
United Kingdom
Prior art keywords
noise suppression
suppression
noise
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
GB08322281A
Other versions
GB8322281D0 (en
GB2126837A (en
Inventor
Henry William Groves
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.)
BAE Systems PLC
Original Assignee
British Aerospace PLC
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 British Aerospace PLC filed Critical British Aerospace PLC
Priority to GB08322281A priority Critical patent/GB2126837B/en
Publication of GB8322281D0 publication Critical patent/GB8322281D0/en
Publication of GB2126837A publication Critical patent/GB2126837A/en
Application granted granted Critical
Publication of GB2126837B publication Critical patent/GB2126837B/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
    • G10K11/1787—General system configurations
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G10K11/17883—General system configurations using both a reference signal and an error signal the reference signal being derived from a machine operating condition, e.g. engine RPM or vehicle speed
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/106—Boxes, i.e. active box covering a noise source; Enclosures
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1082—Microphones, e.g. systems using "virtual" 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/121—Rotating machines, e.g. engines, turbines, motors; Periodic or quasi-periodic signals 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/123—Synchrophasors or other applications where multiple noise sources are driven with a particular phase relationship
    • 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
    • G10K2210/128—Vehicles
    • G10K2210/1281—Aircraft, e.g. spacecraft, airplane or helicopter
    • 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
    • G10K2210/50—Miscellaneous
    • G10K2210/511—Narrow band, e.g. implementations for single frequency cancellation
GB08322281A 1982-08-19 1983-08-18 Noise suppression Expired GB2126837B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08322281A GB2126837B (en) 1982-08-19 1983-08-18 Noise suppression

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8223893 1982-08-19
GB08322281A GB2126837B (en) 1982-08-19 1983-08-18 Noise suppression

Publications (3)

Publication Number Publication Date
GB8322281D0 GB8322281D0 (en) 1983-09-21
GB2126837A GB2126837A (en) 1984-03-28
GB2126837B true GB2126837B (en) 1986-07-23

Family

ID=26283639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08322281A Expired GB2126837B (en) 1982-08-19 1983-08-18 Noise suppression

Country Status (1)

Country Link
GB (1) GB2126837B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105989830A (en) * 2015-03-20 2016-10-05 雅马哈株式会社 Sound masking apparatus and sound masking method

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8615315D0 (en) * 1986-06-23 1986-07-30 Secr Defence Aircraft cabin noise control apparatus
GB2203016A (en) * 1986-10-07 1988-10-05 Adaptive Control Ltd Active sound control apparatus
GB2222053B (en) * 1988-08-17 1993-03-31 Topexpress Ltd Signal processing means for sensing a periodic signal in the presence of another interfering periodic noise
GB8820922D0 (en) * 1988-09-06 1988-10-05 Topexpress Ltd Noise reduction in vehicles cabins
JPH0778680B2 (en) * 1989-07-24 1995-08-23 日産自動車株式会社 Vehicle interior noise reduction device
JP2748626B2 (en) * 1989-12-29 1998-05-13 日産自動車株式会社 Active noise control device
GB2255256B (en) * 1991-04-12 1994-11-02 W S Atkins Engineering Science Method of and apparatus for reducing vibrations
JP2530779B2 (en) * 1991-09-05 1996-09-04 株式会社日立製作所 Noise reduction device
US5386689A (en) * 1992-10-13 1995-02-07 Noises Off, Inc. Active gas turbine (jet) engine noise suppression
WO1994029845A1 (en) * 1993-06-11 1994-12-22 Caterpillar Inc. Top speaker mounting for active noise cancellation
US5478199A (en) * 1994-11-28 1995-12-26 General Electric Company Active low noise fan assembly
US5526292A (en) * 1994-11-30 1996-06-11 Lord Corporation Broadband noise and vibration reduction
US5967863A (en) * 1998-04-15 1999-10-19 Marchant; Gary R. Trolling motor
DE50305274D1 (en) * 2003-09-02 2006-11-16 Schwaebische Werkzeugmaschinen Machine tool with active noise reduction

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB547082A (en) * 1941-04-11 1942-08-12 George Thomas Cain Improvements in sound receiving apparatus
GB1199925A (en) * 1966-09-08 1970-07-22 Midland Transformer Company Lt Improvements in or relating to Noise Reduction
DE2009105A1 (en) * 1970-02-26 1971-09-02 Messerschmitt Boelkow Blohm Noise reduction in propeller engines
GB1577322A (en) * 1976-05-13 1980-10-22 Bearcroft R Active attenuation of recurring vibrations
EP0081516B1 (en) * 1981-06-12 1986-01-08 Sound Attenuators Limited Method and apparatus for reducing repetitive noise entering the ear
GB2107960B (en) * 1981-10-21 1985-09-18 George Brian Barrie Chaplin Method and apparatus for cancelling vibrations

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105989830A (en) * 2015-03-20 2016-10-05 雅马哈株式会社 Sound masking apparatus and sound masking method

Also Published As

Publication number Publication date
GB8322281D0 (en) 1983-09-21
GB2126837A (en) 1984-03-28

Similar Documents

Publication Publication Date Title
EP0105619A3 (en) Multiple-measurement noise-reducing system
GB8328997D0 (en) Active noise reduction
JPS57162529A (en) Noise reducing circuit
GB2126837B (en) Noise suppression
AU559808B2 (en) Interference suppression unit
GB2122052B (en) Reducing noise or vibration
EP0130613A3 (en) Noise reduction circuit
GB8430185D0 (en) Interior noise reduction
AU562600B2 (en) Noise suppression
GB2122056B (en) Noise reduction circuits
GB8409187D0 (en) Noise reduction circuit
GB2083985B (en) Noise reduction circuits
GB2068697B (en) Circuits for noise reduction
GB8508435D0 (en) Noise suppression interface circuits
GB2083987B (en) Noise reduction circuits
GB2083988B (en) Noise reduction circuits
GB8405768D0 (en) Impulse noise reduction
GB8409004D0 (en) Noise reduction circuit
GB8327725D0 (en) Dynamic noise filter
GB8405767D0 (en) Impulse noise reduction
GB2068197B (en) Noise reduction circuits
GB2088665B (en) Noise suppression system
GB2123243B (en) Noise eliminating circuits
GB2059705B (en) Electronic noise suppression
GB2091974B (en) Noise suppression

Legal Events

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

Effective date: 19990818