DE69937131D1 - Rauschverminderungssystem für Audiosignale - Google Patents

Rauschverminderungssystem für Audiosignale

Info

Publication number
DE69937131D1
DE69937131D1 DE69937131T DE69937131T DE69937131D1 DE 69937131 D1 DE69937131 D1 DE 69937131D1 DE 69937131 T DE69937131 T DE 69937131T DE 69937131 T DE69937131 T DE 69937131T DE 69937131 D1 DE69937131 D1 DE 69937131D1
Authority
DE
Germany
Prior art keywords
noise reduction
audio signals
reduction system
audio
signals
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 - Lifetime
Application number
DE69937131T
Other languages
English (en)
Other versions
DE69937131T2 (de
Inventor
Masayuki Tsuji
Masahiro Tsujishita
Kenichi Taura
Masayuki Ishida
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 DE69937131D1 publication Critical patent/DE69937131D1/de
Publication of DE69937131T2 publication Critical patent/DE69937131T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1646—Circuits adapted for the reception of stereophonic signals
    • H04B1/1661—Reduction of noise by manipulation of the baseband composite stereophonic signal or the decoded left and right channels
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
DE69937131T 1998-07-17 1999-05-24 Rauschverminderungssystem für Audiosignale Expired - Lifetime DE69937131T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20294898 1998-07-17
JP20294898A JP3675179B2 (ja) 1998-07-17 1998-07-17 オーディオ信号の雑音除去装置

Publications (2)

Publication Number Publication Date
DE69937131D1 true DE69937131D1 (de) 2007-10-31
DE69937131T2 DE69937131T2 (de) 2008-06-19

Family

ID=16465824

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69937131T Expired - Lifetime DE69937131T2 (de) 1998-07-17 1999-05-24 Rauschverminderungssystem für Audiosignale

Country Status (4)

Country Link
US (1) US6690805B1 (de)
EP (1) EP0973269B1 (de)
JP (1) JP3675179B2 (de)
DE (1) DE69937131T2 (de)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001016171A (ja) * 1999-06-29 2001-01-19 Sanyo Electric Co Ltd ノイズ除去回路
US7551743B1 (en) * 1999-07-15 2009-06-23 Mitsubishi Denki Kabushiki Kaisha Noise reduction apparatus and audio output apparatus
US7613529B1 (en) * 2000-09-09 2009-11-03 Harman International Industries, Limited System for eliminating acoustic feedback
JP3773817B2 (ja) * 2001-07-13 2006-05-10 三洋電機株式会社 ノイズキャンセラ
DE10139248C2 (de) * 2001-08-09 2003-11-27 Harman Becker Automotive Sys Verfahren zur Unterdrückung von Störungen im Empfangssignal eines Stereorundfunkempfängers sowie Stereorundfunkempfänger
US7103122B2 (en) * 2001-08-23 2006-09-05 Pioneer Corporation Noise canceller
GB0202386D0 (en) * 2002-02-01 2002-03-20 Cedar Audio Ltd Method and apparatus for audio signal processing
WO2003079721A1 (en) * 2002-03-13 2003-09-25 Harman International Industries, Incorporated Audio feedback processing system
US20070004356A1 (en) * 2002-12-16 2007-01-04 Koninklijke Philips Electronics N.V. Noise suppression in an fm receiver
US8718298B2 (en) * 2003-12-19 2014-05-06 Lear Corporation NVH dependent parallel compression processing for automotive audio systems
JP4218573B2 (ja) 2004-04-12 2009-02-04 ソニー株式会社 ノイズ低減方法及び装置
JP4606264B2 (ja) 2005-07-19 2011-01-05 三洋電機株式会社 ノイズキャンセラ
JP4765118B2 (ja) * 2006-04-13 2011-09-07 オンセミコンダクター・トレーディング・リミテッド ノイズキャンセラ及びそれを用いたａｍ受信装置
JP5352952B2 (ja) * 2006-11-07 2013-11-27 ソニー株式会社 デジタルフィルタ回路、デジタルフィルタプログラムおよびノイズキャンセリングシステム
JP5056157B2 (ja) * 2007-05-18 2012-10-24 ソニー株式会社 ノイズ低減回路
CN101802905B (zh) * 2007-09-21 2012-09-26 富士通株式会社 有源消声装置以及有源消声装置的控制方法
JP2010182382A (ja) * 2009-02-06 2010-08-19 Toshiba Corp デジタルオーディオ信号補間装置、及びデジタルオーディオ信号補間方法
JP2010249939A (ja) * 2009-04-13 2010-11-04 Sony Corp ノイズ低減装置、ノイズ判定方法
GB2472992A (en) * 2009-08-25 2011-03-02 Zarlink Semiconductor Inc Reduction of clicking sounds in audio data streams
JP2011188467A (ja) * 2010-02-15 2011-09-22 Fujitsu Ten Ltd 放送受信装置及び、放送受信装置の雑音有無判断方法
JP2011199825A (ja) * 2010-02-23 2011-10-06 Fujitsu Ten Ltd 放送受信装置及び、放送受信装置の雑音成分検出方法
JP2012027186A (ja) * 2010-07-22 2012-02-09 Sony Corp 音声信号処理装置、音声信号処理方法及びプログラム
EP2487801B1 (de) * 2011-02-10 2018-09-05 Nxp B.V. Verfahren und Vorrichtung zur Verminderung oder Entfernung von Klickgeräuschen
EP2709324B1 (de) 2012-09-13 2014-11-12 Nxp B.V. Mehrpfad-Interferenzunterdrückung
US9357163B2 (en) * 2012-09-20 2016-05-31 Viavi Solutions Inc. Characterizing ingress noise
KR102006734B1 (ko) * 2012-09-21 2019-08-02 삼성전자 주식회사 음성 신호의 처리 방법 및 무선 통신 단말
KR102182251B1 (ko) * 2013-10-25 2020-11-24 현대모비스 주식회사 디지털 오디오의 팝 노이즈 제거 장치 및 방법
US9613628B2 (en) 2015-07-01 2017-04-04 Gopro, Inc. Audio decoder for wind and microphone noise reduction in a microphone array system
FR3049132B1 (fr) * 2016-03-18 2018-03-23 Continental Automotive France Procede pour limiter le bruit radio, notamment dans la bande fm, par interpolation polynomiale

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1562891A (en) * 1977-02-22 1980-03-19 Toko Inc Noise cancelling systems for fm receivers
US4574390A (en) 1983-03-26 1986-03-04 Victor Company Of Japan, Limited Noise reduction for stereophonic FM signals by high-speed sampling and linear interpolation
JPS61202537A (ja) 1985-03-06 1986-09-08 Clarion Co Ltd Ｆｍステレオ受信機におけるステレオ雑音低減回路
JPH0681064B2 (ja) 1986-09-30 1994-10-12 パイオニア株式会社 Ｆｍ受信機におけるパルス性雑音除去装置
US5357544A (en) * 1992-07-21 1994-10-18 Texas Instruments, Incorporated Devices, systems, and methods for composite signal decoding
TW237587B (de) * 1993-03-19 1995-01-01 Philips Electronics Nv
JPH08149098A (ja) * 1994-11-16 1996-06-07 Mitsubishi Electric Corp 雑音除去装置

Also Published As

Publication number Publication date
JP3675179B2 (ja) 2005-07-27
EP0973269A2 (de) 2000-01-19
EP0973269B1 (de) 2007-09-19
US6690805B1 (en) 2004-02-10
JP2000036768A (ja) 2000-02-02
DE69937131T2 (de) 2008-06-19
EP0973269A3 (de) 2002-04-17

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Legal Events

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8364 No opposition during term of opposition