SE9804311D0 - A method and a device for actively reducing the sound level in a region of a space - Google Patents

A method and a device for actively reducing the sound level in a region of a space

Info

Publication number
SE9804311D0
SE9804311D0 SE9804311A SE9804311A SE9804311D0 SE 9804311 D0 SE9804311 D0 SE 9804311D0 SE 9804311 A SE9804311 A SE 9804311A SE 9804311 A SE9804311 A SE 9804311A SE 9804311 D0 SE9804311 D0 SE 9804311D0
Authority
SE
Sweden
Prior art keywords
level
sensors
space
control
region
Prior art date
Application number
SE9804311A
Other languages
Swedish (sv)
Other versions
SE9804311L (en
SE513754C2 (en
Inventor
Siv Leth
William G Halvorsen
Patrick Barney
Original Assignee
Saab Ab
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 Saab Ab filed Critical Saab Ab
Priority to SE9804311A priority Critical patent/SE513754C2/en
Publication of SE9804311D0 publication Critical patent/SE9804311D0/en
Priority to AU20147/00A priority patent/AU2014700A/en
Priority to PCT/SE1999/002218 priority patent/WO2000036590A1/en
Priority to EP99963776A priority patent/EP1147512A1/en
Publication of SE9804311L publication Critical patent/SE9804311L/en
Publication of SE513754C2 publication Critical patent/SE513754C2/en

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
    • G10K11/17881—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
    • 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
    • G10K11/17813—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 characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • 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
    • G10K2210/128—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
    • G10K2210/10—Applications
    • G10K2210/128—Vehicles
    • G10K2210/1282—Automobiles
    • 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
    • G10K2210/3023—Estimation of noise, e.g. on error signals
    • G10K2210/30232—Transfer functions, e.g. impulse response
    • 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
    • G10K2210/3055—Transfer function of the acoustic system
    • 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
    • G10K2210/3221—Headrests, seats or the like, for personal ANC systems

Abstract

The invention concerns a method and a device for actively reducing the level of a primary field of sound or vibration in a space (2). Control sensors (7) sense a parameter related to said level. Actuators (6) produce a secondary field of sound or vibration interfering with said primary field. A first transfer function matrix defines for each control sensor the level of the parameter caused by the actuator excitation. Monitor sensors (16) sense said parameter related to the level of the primary field. A second transfer matrix defines for each monitor sensor (16) the level caused by actuator excitation. A control unit (10) controls the actuators (6) by the relation between the first transfer matrix and the second transfer matrix, the control sensors (7) and the monitor sensors (16), and a residual vector of the actual level of the control sensors.
SE9804311A 1998-12-14 1998-12-14 Method and apparatus for actively reducing the level of a primary field of sound or vibration in a space SE513754C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9804311A SE513754C2 (en) 1998-12-14 1998-12-14 Method and apparatus for actively reducing the level of a primary field of sound or vibration in a space
AU20147/00A AU2014700A (en) 1998-12-14 1999-11-29 A method of and a device for actively reducing the level of a primary field of sound or vibration in a space
PCT/SE1999/002218 WO2000036590A1 (en) 1998-12-14 1999-11-29 A method of and a device for actively reducing the level of a primary field of sound or vibration in a space
EP99963776A EP1147512A1 (en) 1998-12-14 1999-11-29 A method of and a device for actively reducing the level of a primary field of sound or vibration in a space

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9804311A SE513754C2 (en) 1998-12-14 1998-12-14 Method and apparatus for actively reducing the level of a primary field of sound or vibration in a space

Publications (3)

Publication Number Publication Date
SE9804311D0 true SE9804311D0 (en) 1998-12-14
SE9804311L SE9804311L (en) 2000-06-15
SE513754C2 SE513754C2 (en) 2000-10-30

Family

ID=20413645

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9804311A SE513754C2 (en) 1998-12-14 1998-12-14 Method and apparatus for actively reducing the level of a primary field of sound or vibration in a space

Country Status (4)

Country Link
EP (1) EP1147512A1 (en)
AU (1) AU2014700A (en)
SE (1) SE513754C2 (en)
WO (1) WO2000036590A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918636B1 (en) * 2007-07-10 2009-10-23 Eads Europ Aeronautic Defence AIRCRAFT WITH IMPROVED ACOUSTIC COMFORT

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5245552A (en) * 1990-10-31 1993-09-14 The Boeing Company Method and apparatus for actively reducing multiple-source repetitive vibrations
JP3094517B2 (en) * 1991-06-28 2000-10-03 日産自動車株式会社 Active noise control device
US5347586A (en) * 1992-04-28 1994-09-13 Westinghouse Electric Corporation Adaptive system for controlling noise generated by or emanating from a primary noise source
US6002778A (en) * 1996-08-07 1999-12-14 Lord Corporation Active structural control system and method including active vibration absorbers (AVAS)

Also Published As

Publication number Publication date
AU2014700A (en) 2000-07-03
WO2000036590A1 (en) 2000-06-22
SE9804311L (en) 2000-06-15
SE513754C2 (en) 2000-10-30
EP1147512A1 (en) 2001-10-24

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Legal Events

Date Code Title Description
NUG Patent has lapsed