ES2157557T3 - METHOD AND APPLIANCE FOR THE ACTIVE CONTROL OF RADIATED SOUND FROM FLOW PIPES. - Google Patents

METHOD AND APPLIANCE FOR THE ACTIVE CONTROL OF RADIATED SOUND FROM FLOW PIPES.

Info

Publication number
ES2157557T3
ES2157557T3 ES97906266T ES97906266T ES2157557T3 ES 2157557 T3 ES2157557 T3 ES 2157557T3 ES 97906266 T ES97906266 T ES 97906266T ES 97906266 T ES97906266 T ES 97906266T ES 2157557 T3 ES2157557 T3 ES 2157557T3
Authority
ES
Spain
Prior art keywords
sound
active control
appliance
radiated
flow 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 - Lifetime
Application number
ES97906266T
Other languages
Spanish (es)
Inventor
Philip Joseph
Philip Arthur Nelson
Michael 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.)
UK Secretary of State for Defence
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 ES2157557T3 publication Critical patent/ES2157557T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

UN METODO PARA EL CONTROL ACTIVO DE UN SONIDO RADIADO POR UN CONDUCTO (1), QUE COMPRENDE UN SONIDO DETECTADO POR UN CONJUNTO (4) DE SENSORES SITUADOS SOBRE LA SUPERFICIE INTERIOR DE UN CONDUCTO DE FLUJO Y QUE CONTROLA UN CONJUNTO (3) DE FUENTES SECUNDARIAS (ALTAVOCES) PARA MINIMIZAR EL SONIDO RADIADO EN EL CAMPO LEJANO. LO ANTERIOR SE REALIZA MEDIANTE EL CONTROL DE LAS FUENTES DE SONIDO PARA MINIMIZAR UN FUNCION DE COSTE. EN FUNCION DE SI LA POTENCIA SONORA TOTAL O LA POTENCIA SONORA DIRIGIDA HACIA LA LINEA LATERAL SE VA A REDUCIR, EL METODO UTILIZA DIFERENTES FUNCIONES DE COSTES.A METHOD FOR THE ACTIVE CONTROL OF A SOUND RADIATED BY A DUCT (1), THAT INCLUDES A SOUND DETECTED BY A SET (4) OF SENSORS LOCATED ON THE INTERIOR SURFACE OF A FLOW DUCT AND CONTROLLING A SET (3) OF SOURCES SECONDARY (SPEAKERS) TO MINIMIZE THE RADIATED SOUND IN THE FAR FAR. THE ABOVE IS CARRIED OUT BY CONTROLING SOUND SOURCES TO MINIMIZE A COST FUNCTION. Depending on whether TOTAL SOUND POWER OR DIRECTED SOUND POWER TOWARDS THE SIDE LINE WILL BE REDUCED, THE METHOD USES DIFFERENT COST FUNCTIONS.

ES97906266T 1996-03-19 1997-03-10 METHOD AND APPLIANCE FOR THE ACTIVE CONTROL OF RADIATED SOUND FROM FLOW PIPES. Expired - Lifetime ES2157557T3 (en)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
ES2157557T3 true ES2157557T3 (en) 2001-08-16

Family

ID=26308956

Family Applications (1)

Application Number Title Priority Date Filing Date
ES97906266T Expired - Lifetime ES2157557T3 (en) 1996-03-19 1997-03-10 METHOD AND APPLIANCE FOR THE ACTIVE CONTROL OF RADIATED SOUND FROM FLOW PIPES.

Country Status (4)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040594A1 (en) * 2007-01-24 2008-07-31 Brahms, Martin, Dipl.-Ing. Method for tempering multifunctional housing, involves arranging temperature sensor in multifunctional housing, and intelligent electronic switch is attached at blower
DE102015226048B4 (en) 2015-12-18 2020-07-16 Bayerische Motoren Werke Aktiengesellschaft Method for determining and / or adapting the sound emitted by an exhaust system and control unit therefor

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 (en) * 1988-06-01 1990-09-07 Saint Louis Inst ACTIVE VIBRATION, ESPECIALLY NOISE, MITIGATION DEVICES
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

Also Published As

Publication number Publication date
EP0888607B1 (en) 2001-06-13
WO1997035300A1 (en) 1997-09-25
DE69705211T2 (en) 2001-10-11
EP0888607A1 (en) 1999-01-07
DE69705211D1 (en) 2001-07-19

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