CA2086926A1 - Noise sound controller - Google Patents

Noise sound controller

Info

Publication number
CA2086926A1
CA2086926A1 CA2086926A CA2086926A CA2086926A1 CA 2086926 A1 CA2086926 A1 CA 2086926A1 CA 2086926 A CA2086926 A CA 2086926A CA 2086926 A CA2086926 A CA 2086926A CA 2086926 A1 CA2086926 A1 CA 2086926A1
Authority
CA
Canada
Prior art keywords
period
noise
differential signal
calculation means
sound wave
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
CA2086926A
Other languages
French (fr)
Other versions
CA2086926C (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
Individual
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 Individual filed Critical Individual
Publication of CA2086926A1 publication Critical patent/CA2086926A1/en
Application granted granted Critical
Publication of CA2086926C publication Critical patent/CA2086926C/en
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
    • 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 sound controller being capable of following a sudden change in a noise period, includes a differential signal calculation means 5 that calculates a differential signal between an output from a sound wave-electric signal converter 2 and an output from an adaptive filtering means 6, a transfer characteristics simulation means 4 that is inserted between the adaptive filtering means 6 and the differential signal calculation means 5, and simulates transfer characteristics of a system from the adaptive filtering means 6 to the differential signal calculation means passing through the electric signal-sound wave converter 3 and the sound wave-electric signal converter 2, a period-detecting unit 7 that detects the noise period of noise from a noise source 1, a period-adjusting unit 8 that varies the period of an output signal from the differential signal calculation means 5 depending upon an amount of change in the noise period, and a period detect/control means (10) that changes filter coefficients of the adaptlve filtering mens 6 depending on estimated change in the noise period.
CA002086926A 1991-05-30 1992-05-26 Noise sound controller Expired - Fee Related CA2086926C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3127632A JPH0772837B2 (en) 1991-05-30 1991-05-30 Noise cycle controller
JP3-127632 1991-05-30
JP3195449A JPH0719157B2 (en) 1991-08-05 1991-08-05 Noise control device
JP3-195449 1991-08-05

Publications (2)

Publication Number Publication Date
CA2086926A1 true CA2086926A1 (en) 1992-12-01
CA2086926C CA2086926C (en) 1996-09-17

Family

ID=26463538

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002086926A Expired - Fee Related CA2086926C (en) 1991-05-30 1992-05-26 Noise sound controller

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

Also Published As

Publication number Publication date
DE69227252T2 (en) 1999-03-25
EP0598120A1 (en) 1994-05-25
CA2086926C (en) 1996-09-17
EP0598120B1 (en) 1998-10-07
WO1992022054A1 (en) 1992-12-10
EP0598120A4 (en) 1994-07-27
DE69227252D1 (en) 1998-11-12

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20100526