EP2747075A2 - Aktive Geräuschunterdrückung mit geschlossenem Regelkreis, z.B. für Thermodrucker - Google Patents

Aktive Geräuschunterdrückung mit geschlossenem Regelkreis, z.B. für Thermodrucker Download PDF

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Publication number
EP2747075A2
EP2747075A2 EP13196126.0A EP13196126A EP2747075A2 EP 2747075 A2 EP2747075 A2 EP 2747075A2 EP 13196126 A EP13196126 A EP 13196126A EP 2747075 A2 EP2747075 A2 EP 2747075A2
Authority
EP
European Patent Office
Prior art keywords
signal
noise
printer
compensated
distance
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.)
Withdrawn
Application number
EP13196126.0A
Other languages
English (en)
French (fr)
Other versions
EP2747075A3 (de
Inventor
Zhiyong Liu
Ter Liang Tong
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.)
Intermec IP Corp
Original Assignee
Intermec IP Corp
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 US13/725,257 external-priority patent/US20130163773A1/en
Application filed by Intermec IP Corp filed Critical Intermec IP Corp
Publication of EP2747075A2 publication Critical patent/EP2747075A2/de
Publication of EP2747075A3 publication Critical patent/EP2747075A3/de
Withdrawn legal-status Critical Current

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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
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • 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
    • G10K11/17857—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
    • G10K2210/105—Appliances, e.g. washing machines or dishwashers
    • G10K2210/1052—Copiers or other image-forming apparatus, e.g. laser printer
    • 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
    • G10K2210/3021—Eigenfrequencies; Eigenvalues, e.g. used to identify most significant couplings between actuators and sensors
    • 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
    • G10K2210/3025—Determination of spectrum characteristics, e.g. FFT

Definitions

  • the resonance frequencies are those frequencies at which a system tends to vibrate at much larger amplitudes compared to other frequencies.
  • a resonance frequency generally occurs in a system when the corresponding wavelength of a sound source is proportional to the length of at least one of the dimensions of the system.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
EP13196126.0A 2012-12-21 2013-12-06 Aktive Geräuschunterdrückung mit geschlossenem Regelkreis, z.B. für Thermodrucker Withdrawn EP2747075A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/725,257 US20130163773A1 (en) 2011-12-23 2012-12-21 Closed-loop active noise reduction system, such as for a thermal printer

Publications (2)

Publication Number Publication Date
EP2747075A2 true EP2747075A2 (de) 2014-06-25
EP2747075A3 EP2747075A3 (de) 2016-06-22

Family

ID=49917426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13196126.0A Withdrawn EP2747075A3 (de) 2012-12-21 2013-12-06 Aktive Geräuschunterdrückung mit geschlossenem Regelkreis, z.B. für Thermodrucker

Country Status (1)

Country Link
EP (1) EP2747075A3 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108944749A (zh) * 2017-05-19 2018-12-07 比亚迪股份有限公司 车辆降噪装置及方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6232994B1 (en) * 1998-09-29 2001-05-15 Intermec Ip Corp. Noise cancellation system for a thermal printer
JP4387987B2 (ja) * 2004-06-11 2009-12-24 株式会社オクテック 微小構造体の検査装置、微小構造体の検査方法および微小構造体の検査プログラム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108944749A (zh) * 2017-05-19 2018-12-07 比亚迪股份有限公司 车辆降噪装置及方法

Also Published As

Publication number Publication date
EP2747075A3 (de) 2016-06-22

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