DE69705211T2 - Verfahren und vorrichtung für aktive kontrolle von,von strömungsleitungen ausgestrahlten,geraüsch - Google Patents

Verfahren und vorrichtung für aktive kontrolle von,von strömungsleitungen ausgestrahlten,geraüsch

Info

Publication number
DE69705211T2
DE69705211T2 DE69705211T DE69705211T DE69705211T2 DE 69705211 T2 DE69705211 T2 DE 69705211T2 DE 69705211 T DE69705211 T DE 69705211T DE 69705211 T DE69705211 T DE 69705211T DE 69705211 T2 DE69705211 T2 DE 69705211T2
Authority
DE
Germany
Prior art keywords
emissed
noise
active control
flow pipes
pipes
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 - Fee Related
Application number
DE69705211T
Other languages
English (en)
Other versions
DE69705211D1 (de
Inventor
Philip Joseph
Arthur Nelson
John Fisher
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.)
Qinetiq Ltd
Original Assignee
UK Secretary of State for Defence
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
Priority claimed from GBGB9605739.3A external-priority patent/GB9605739D0/en
Priority claimed from GBGB9618864.4A external-priority patent/GB9618864D0/en
Application filed by UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Application granted granted Critical
Publication of DE69705211D1 publication Critical patent/DE69705211D1/de
Publication of DE69705211T2 publication Critical patent/DE69705211T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G10K11/1781—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
    • 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
    • G10K2210/10—Applications
    • G10K2210/111—Directivity control or beam pattern
    • 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
    • G10K2210/10—Applications
    • G10K2210/119—Radiation control, e.g. control of sound radiated by vibrating structures
    • 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
    • G10K2210/3051—Sampling, e.g. variable rate, synchronous, decimated or interpolated
    • 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
    • G10K2210/507—Flow or turbulence

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Pipe Accessories (AREA)
DE69705211T 1996-03-19 1997-03-10 Verfahren und vorrichtung für aktive kontrolle von,von strömungsleitungen ausgestrahlten,geraüsch Expired - Fee Related DE69705211T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9605739.3A GB9605739D0 (en) 1996-03-19 1996-03-19 Method for active control of sound radiated from DULD
GBGB9618864.4A GB9618864D0 (en) 1996-09-10 1996-09-10 Method for the active control of sound radiated from flow ducts
PCT/GB1997/000624 WO1997035300A1 (en) 1996-03-19 1997-03-10 Method and apparatus for the active control of sound radiated from flow ducts

Publications (2)

Publication Number Publication Date
DE69705211D1 DE69705211D1 (de) 2001-07-19
DE69705211T2 true DE69705211T2 (de) 2001-10-11

Family

ID=26308956

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69705211T Expired - Fee Related DE69705211T2 (de) 1996-03-19 1997-03-10 Verfahren und vorrichtung für aktive kontrolle von,von strömungsleitungen ausgestrahlten,geraüsch

Country Status (4)

Country Link
EP (1) EP0888607B1 (de)
DE (1) DE69705211T2 (de)
ES (1) ES2157557T3 (de)
WO (1) WO1997035300A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040594A1 (de) * 2007-01-24 2008-07-31 Brahms, Martin, Dipl.-Ing. Verfahren zur Temperierung eines Multifunktionsgehäuses
DE102015226048B4 (de) 2015-12-18 2020-07-16 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Ermittlung und/oder Anpassung des von einer Abgasanlage emittierten Schalls und Steuereinheit dafür

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044203A (en) * 1972-11-24 1977-08-23 National Research Development Corporation Active control of sound waves
US4171465A (en) * 1978-08-08 1979-10-16 National Research Development Corporation Active control of sound waves
FR2632473B1 (fr) * 1988-06-01 1990-09-07 Saint Louis Inst Dispositifs d'attenuation active de vibrations, notamment de bruit, disposes en serie
US5423658A (en) * 1993-11-01 1995-06-13 General Electric Company Active noise control using noise source having adaptive resonant frequency tuning through variable ring loading

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040594A1 (de) * 2007-01-24 2008-07-31 Brahms, Martin, Dipl.-Ing. Verfahren zur Temperierung eines Multifunktionsgehäuses
DE102015226048B4 (de) 2015-12-18 2020-07-16 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Ermittlung und/oder Anpassung des von einer Abgasanlage emittierten Schalls und Steuereinheit dafür

Also Published As

Publication number Publication date
EP0888607A1 (de) 1999-01-07
DE69705211D1 (de) 2001-07-19
WO1997035300A1 (en) 1997-09-25
EP0888607B1 (de) 2001-06-13
ES2157557T3 (es) 2001-08-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: QINETIQ LTD., LONDON, GB

8339 Ceased/non-payment of the annual fee