DE69721628D1 - Schaltung, Vorrichtung und Verfahren zur Verminderung des Rauschens - Google Patents

Schaltung, Vorrichtung und Verfahren zur Verminderung des Rauschens

Info

Publication number
DE69721628D1
DE69721628D1 DE69721628T DE69721628T DE69721628D1 DE 69721628 D1 DE69721628 D1 DE 69721628D1 DE 69721628 T DE69721628 T DE 69721628T DE 69721628 T DE69721628 T DE 69721628T DE 69721628 D1 DE69721628 D1 DE 69721628D1
Authority
DE
Germany
Prior art keywords
circuit
reducing noise
noise
reducing
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 - Fee Related
Application number
DE69721628T
Other languages
English (en)
Other versions
DE69721628T2 (de
Inventor
Takashi Shiono
Mutsumi Yoshinaga
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Application granted granted Critical
Publication of DE69721628D1 publication Critical patent/DE69721628D1/de
Publication of DE69721628T2 publication Critical patent/DE69721628T2/de
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
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • 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
    • G10K2210/108—Communication systems, e.g. where useful sound is kept and noise is cancelled
    • G10K2210/1081—Earphones, e.g. for telephones, ear protectors or headsets
    • 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
    • G10K2210/3012—Algorithms
    • 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
    • G10K2210/3213—Automatic gain control [AGC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
DE69721628T 1996-04-26 1997-01-29 Schaltung, Vorrichtung und Verfahren zur Verminderung des Rauschens Expired - Fee Related DE69721628T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10699796 1996-04-26
JP10699796A JP3325770B2 (ja) 1996-04-26 1996-04-26 ノイズ低減回路及びノイズ低減装置及びノイズ低減方法

Publications (2)

Publication Number Publication Date
DE69721628D1 true DE69721628D1 (de) 2003-06-12
DE69721628T2 DE69721628T2 (de) 2004-03-25

Family

ID=14447868

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69721628T Expired - Fee Related DE69721628T2 (de) 1996-04-26 1997-01-29 Schaltung, Vorrichtung und Verfahren zur Verminderung des Rauschens

Country Status (4)

Country Link
US (1) US5796850A (de)
EP (1) EP0803860B1 (de)
JP (1) JP3325770B2 (de)
DE (1) DE69721628T2 (de)

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FR2754405B1 (fr) * 1996-10-08 1998-12-18 Dolphin Integration Sa Montage a faible bruit d'un amplificateur
DE69823392T2 (de) * 1998-10-02 2004-09-02 Thomson Licensing S.A., Boulogne Verstärker mit reduzierter erholzeit für störimpulse
US8014724B2 (en) 1999-10-21 2011-09-06 Broadcom Corporation System and method for signal limiting
US7933555B2 (en) * 1999-10-21 2011-04-26 Broadcom Corporation System and method for reducing phase noise
US20050254663A1 (en) * 1999-11-16 2005-11-17 Andreas Raptopoulos Electronic sound screening system and method of accoustically impoving the environment
US6424282B1 (en) 2001-03-09 2002-07-23 Sony Corporation Method and apparatus for noise compensation in digital to analog converters
US7277722B2 (en) * 2001-06-27 2007-10-02 Intel Corporation Reducing undesirable audio signals
US20040114536A1 (en) * 2002-10-16 2004-06-17 O'rourke Aidan Method for communicating information on fast and slow paths
US8965727B2 (en) * 2005-05-20 2015-02-24 Omniphase Research Laboratories, Inc. Intelligent low noise design
KR100638337B1 (ko) * 2005-09-05 2006-10-24 주식회사 비손하이테크 주변소음 제거장치 및 방법과 이를 구비한 이동통신 단말기
KR100667852B1 (ko) 2006-01-13 2007-01-11 삼성전자주식회사 휴대용 레코더 기기의 잡음 제거 장치 및 그 방법
TWI317240B (en) * 2006-07-05 2009-11-11 Asustek Comp Inc Anti-pop circuit
JP2008244721A (ja) * 2007-03-27 2008-10-09 Clarion Co Ltd 音声混合回路
US7764528B2 (en) 2007-09-26 2010-07-27 Honeywell International Inc. AC to DC conversion circuit
EP2790182B1 (de) * 2009-04-28 2017-01-11 Bose Corporation Tonabhängige ANR-Signalverarbeitungseinstellung
US8532310B2 (en) 2010-03-30 2013-09-10 Bose Corporation Frequency-dependent ANR reference sound compression
US9838784B2 (en) 2009-12-02 2017-12-05 Knowles Electronics, Llc Directional audio capture
US8473287B2 (en) 2010-04-19 2013-06-25 Audience, Inc. Method for jointly optimizing noise reduction and voice quality in a mono or multi-microphone system
US8538035B2 (en) 2010-04-29 2013-09-17 Audience, Inc. Multi-microphone robust noise suppression
US8781137B1 (en) 2010-04-27 2014-07-15 Audience, Inc. Wind noise detection and suppression
US8447596B2 (en) 2010-07-12 2013-05-21 Audience, Inc. Monaural noise suppression based on computational auditory scene analysis
DE102011003470A1 (de) 2011-02-01 2012-08-02 Sennheiser Electronic Gmbh & Co. Kg Headset und Hörer
US8805312B2 (en) 2011-04-06 2014-08-12 Texas Instruments Incorporated Methods, circuits, systems and apparatus providing audio sensitivity enhancement in a wireless receiver, power management and other performances
WO2013144422A1 (en) * 2012-03-30 2013-10-03 Nokia Corporation A method and apparatus for filtering an audio signal
US9681211B2 (en) * 2013-07-12 2017-06-13 Infineon Technologies Ag System and method for a microphone amplifier
US9536540B2 (en) 2013-07-19 2017-01-03 Knowles Electronics, Llc Speech signal separation and synthesis based on auditory scene analysis and speech modeling
US9357295B2 (en) * 2013-10-22 2016-05-31 Infineon Technologies Ag System and method for a transducer interface
JP6173180B2 (ja) * 2013-11-15 2017-08-02 株式会社オーディオテクニカ マイクロホン及びマイクロホン装置
WO2015195963A1 (en) 2014-06-20 2015-12-23 Icon Health & Fitness, Inc. Noise cancelling mechanism in a treadmill
US9978388B2 (en) 2014-09-12 2018-05-22 Knowles Electronics, Llc Systems and methods for restoration of speech components
US9820042B1 (en) 2016-05-02 2017-11-14 Knowles Electronics, Llc Stereo separation and directional suppression with omni-directional microphones
CN111565343A (zh) * 2020-05-18 2020-08-21 歌尔科技有限公司 一种数字降噪的音频补偿方法、系统、装置及耳机
CN112216264A (zh) * 2020-09-11 2021-01-12 深圳拓邦股份有限公司 扫地机降噪方法、装置、扫地机及计算机可读存储介质

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US3611145A (en) * 1968-08-05 1971-10-05 Lummus Co Method and apparatus for the suppression of noise in process control systems
US3768028A (en) * 1972-03-22 1973-10-23 Optimation Inc A.c.-d.c. amplifier system
US3821482A (en) * 1973-05-03 1974-06-28 Bell Telephone Labor Inc Noise spectrum equalizer utilizing spectrum inversion
US3940709A (en) * 1974-12-19 1976-02-24 Ampex Corporation Equalization circuit
JPS54111208A (en) * 1978-02-21 1979-08-31 Clarion Co Ltd Noise elimination circuit
NL8303881A (nl) * 1982-12-11 1984-07-02 Schaltbau Gmbh Vermogensversterker voor een schakeling voor aktieve reduktiebeveiliging.
JPS6199451A (ja) * 1984-09-21 1986-05-17 Toshiba Corp 電話機
US4759071A (en) * 1986-08-14 1988-07-19 Richards Medical Company Automatic noise eliminator for hearing aids
JP2786278B2 (ja) * 1989-11-28 1998-08-13 カルソニック株式会社 アクティブ・ノイズ・キャンセラー
US5148117A (en) * 1991-11-25 1992-09-15 American Nucleonics Corporation Adaptive feed-forward method and apparatus for amplifier noise reduction
US5381473A (en) * 1992-10-29 1995-01-10 Andrea Electronics Corporation Noise cancellation apparatus
FR2716313B1 (fr) * 1994-02-11 1996-04-12 Alcatel Mobile Comm France Dispositif de commande de la polarisation d'un amplificateur.
JPH07297900A (ja) * 1994-04-26 1995-11-10 Mitsubishi Electric Corp 騒音対策通話機
JP2697625B2 (ja) * 1994-08-31 1998-01-14 日本電気株式会社 フィードフォワード増幅器
US5642076A (en) * 1995-01-31 1997-06-24 National Semiconductor Corporation No turn-on pop noise amplifier
US5554958A (en) * 1995-04-28 1996-09-10 Hewlett Packard Company Inverting amplifier having a low noise biasing network
US5703529A (en) * 1995-10-13 1997-12-30 National Semiconductor Corporation Amplifier circuit with reduced DC power related transients

Also Published As

Publication number Publication date
EP0803860A3 (de) 1999-10-27
EP0803860B1 (de) 2003-05-07
DE69721628T2 (de) 2004-03-25
EP0803860A2 (de) 1997-10-29
US5796850A (en) 1998-08-18
JP3325770B2 (ja) 2002-09-17
JPH09294038A (ja) 1997-11-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee