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EP0598120A4 - Noise control apparatus. - Google Patents

Noise control apparatus.

Info

Publication number
EP0598120A4
EP0598120A4 EP19920910577 EP92910577A EP0598120A4 EP 0598120 A4 EP0598120 A4 EP 0598120A4 EP 19920910577 EP19920910577 EP 19920910577 EP 92910577 A EP92910577 A EP 92910577A EP 0598120 A4 EP0598120 A4 EP 0598120A4
Authority
EP
European Patent Office
Prior art keywords
noise
cycle
signal
convertor
transmission characteristics
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.)
Granted
Application number
EP19920910577
Other languages
French (fr)
Other versions
EP0598120B1 (en
EP0598120A1 (en
Inventor
Masaaki Nagami
Kazuya Sako
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.)
Denso Ten Ltd
Original Assignee
Denso Ten Ltd
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 JP3127632A external-priority patent/JPH0772837B2/en
Priority claimed from JP3195449A external-priority patent/JPH0719157B2/en
Application filed by Denso Ten Ltd filed Critical Denso Ten Ltd
Publication of EP0598120A1 publication Critical patent/EP0598120A1/en
Publication of EP0598120A4 publication Critical patent/EP0598120A4/en
Application granted granted Critical
Publication of EP0598120B1 publication Critical patent/EP0598120B1/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
    • G10K11/17821—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 input signals only
    • G10K11/17823—Reference signals, e.g. ambient acoustic environment
    • 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
    • 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
    • G10K2210/107—Combustion, e.g. burner noise control of jet engines
    • 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
    • G10K2210/3031—Hardware, e.g. architecture
    • 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
    • G10K2210/3042—Parallel processing
    • 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
    • G10K2210/50—Miscellaneous
    • G10K2210/511—Narrow band, e.g. implementations for single frequency cancellation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Exhaust Silencers (AREA)

Abstract

A noise control apparatus for eliminating noise capable of responding to abruptly changing noise frequency. The apparatus includes adaptive filtering means (6) for receiving a noise signal and controlling a filter coefficient on the basis on an error signal of an acoustoelectrical convertor (2) to produce a compensation signal for eliminating the noise to the convertor (3); transmission characteristics simulation means (4) for simulating transmission characteristics of a closed-loop system including the adaptive filtering means (6) and the acoustoelectrical convertor (3); difference signal operation means (5) for generating a noise signal from the difference between the error signal of the convertor (2) and the compensation signal sent from the adaptive filtering means (6) through the transmission characteristics simulation means (4); cycle detection unit (7) for detecting a noise cycle of a noise generation source (1), cycle adjustment unit (8) for changing the cycle of the noise signal of the difference signal operation means (5) in accordance with the change of the noise cycle, and cycle detection control means (10) for changing the filter coefficient in accordance with an estimated quantity of the noise cycle.
EP92910577A 1991-05-30 1992-05-26 Noise control apparatus Expired - Lifetime EP0598120B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP3127632A JPH0772837B2 (en) 1991-05-30 1991-05-30 Noise cycle controller
JP127632/91 1991-05-30
JP3195449A JPH0719157B2 (en) 1991-08-05 1991-08-05 Noise control device
JP195449/91 1991-08-05
PCT/JP1992/000680 WO1992022054A1 (en) 1991-05-30 1992-05-26 Noise control apparatus

Publications (3)

Publication Number Publication Date
EP0598120A1 EP0598120A1 (en) 1994-05-25
EP0598120A4 true EP0598120A4 (en) 1994-07-27
EP0598120B1 EP0598120B1 (en) 1998-10-07

Family

ID=26463538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92910577A Expired - Lifetime EP0598120B1 (en) 1991-05-30 1992-05-26 Noise control apparatus

Country Status (4)

Country Link
EP (1) EP0598120B1 (en)
CA (1) CA2086926C (en)
DE (1) DE69227252T2 (en)
WO (1) WO1992022054A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404409A (en) * 1991-07-31 1995-04-04 Fujitsu Ten Limited Adaptive filtering means for an automatic sound controlling apparatus
US5388080A (en) * 1993-04-27 1995-02-07 Hughes Aircraft Company Non-integer sample delay active noise canceller
EP0814456A3 (en) * 1996-06-17 1998-10-07 Lord Corporation Active noise or vibration control (ANVC) system and method including enhanced reference signals
DE10317502A1 (en) * 2003-04-16 2004-11-18 Daimlerchrysler Ag Evaluation method e.g. for analysis of sounds signals, evaluating sound signal, through band pass filter with sound signal is in frequency range of first band-pass filter
KR101840205B1 (en) * 2016-09-02 2018-05-04 현대자동차주식회사 Sound control apparatus, vehicle and method of controlling thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62164400A (en) * 1986-01-14 1987-07-21 Hitachi Plant Eng & Constr Co Ltd Electronic silencer system
JPH0727389B2 (en) * 1987-08-28 1995-03-29 日立プラント建設株式会社 Electronic silencing system
US4837834A (en) * 1988-05-04 1989-06-06 Nelson Industries, Inc. Active acoustic attenuation system with differential filtering
JPH0241954A (en) * 1988-08-03 1990-02-13 Kanto Auto Works Ltd Device for reducing sound confined in vehicle
JP2598483B2 (en) * 1988-09-05 1997-04-09 日立プラント建設株式会社 Electronic silencing system
JPH02218296A (en) * 1989-02-20 1990-08-30 Nissan Motor Co Ltd Controller for noise in vehicle
JP2864532B2 (en) * 1989-05-22 1999-03-03 いすゞ自動車株式会社 Vehicle interior noise reduction device
JPH0727391B2 (en) * 1989-07-19 1995-03-29 富士通テン株式会社 Noise reduction device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
No further relevant documents disclosed *
See also references of WO9222054A1 *

Also Published As

Publication number Publication date
CA2086926C (en) 1996-09-17
CA2086926A1 (en) 1992-12-01
DE69227252T2 (en) 1999-03-25
EP0598120B1 (en) 1998-10-07
DE69227252D1 (en) 1998-11-12
WO1992022054A1 (en) 1992-12-10
EP0598120A1 (en) 1994-05-25

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