CA2169424A1 - Method and apparatus for noise reduction by filtering based on a maximum signal-to-noise ratio and an estimated noise level - Google Patents

Method and apparatus for noise reduction by filtering based on a maximum signal-to-noise ratio and an estimated noise level

Info

Publication number
CA2169424A1
CA2169424A1 CA002169424A CA2169424A CA2169424A1 CA 2169424 A1 CA2169424 A1 CA 2169424A1 CA 002169424 A CA002169424 A CA 002169424A CA 2169424 A CA2169424 A CA 2169424A CA 2169424 A1 CA2169424 A1 CA 2169424A1
Authority
CA
Canada
Prior art keywords
noise
level
estimated
reducing
frequency spectrum
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
CA002169424A
Other languages
French (fr)
Other versions
CA2169424C (en
Inventor
Joseph Chan
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Publication of CA2169424A1 publication Critical patent/CA2169424A1/en
Application granted granted Critical
Publication of CA2169424C publication Critical patent/CA2169424C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G10L2021/02163—Only one microphone
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0232—Processing in the frequency domain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique

Abstract

A method for reducing the noise in an speech signal by removing the noise from an input speech signal is disclosed. The noise reducing method includes converting the input speech signal into a frequency spectrum, determining filter characteristics based upon a first value obtained on the basis of the ratio of a level of the frequency spectrum to an estimated level of the noise spectrum contained in the frequency spectrum and a second value as found from the maximum value of the ratio of the frame- based signal level of the frequency spectrum to the estimated noise level and the estimated noise level, and reducing the noise in the input speech signal by filtering responsive to the filter characteristics. A corresponding apparatus for reducing the noise is also disclosed.
CA002169424A 1995-02-17 1996-02-13 Method and apparatus for noise reduction by filtering based on a maximum signal-to-noise ratio and an estimated noise level Expired - Lifetime CA2169424C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP02933695A JP3484801B2 (en) 1995-02-17 1995-02-17 Method and apparatus for reducing noise of audio signal
JPP07-029336 1995-02-17

Publications (2)

Publication Number Publication Date
CA2169424A1 true CA2169424A1 (en) 1996-08-18
CA2169424C CA2169424C (en) 2007-07-10

Family

ID=12273403

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002169424A Expired - Lifetime CA2169424C (en) 1995-02-17 1996-02-13 Method and apparatus for noise reduction by filtering based on a maximum signal-to-noise ratio and an estimated noise level

Country Status (17)

Country Link
US (1) US6032114A (en)
EP (1) EP0727769B1 (en)
JP (1) JP3484801B2 (en)
KR (1) KR100414841B1 (en)
CN (1) CN1140869A (en)
AT (1) ATE209389T1 (en)
AU (1) AU696187B2 (en)
BR (1) BR9600761A (en)
CA (1) CA2169424C (en)
DE (1) DE69617069T2 (en)
ES (1) ES2163585T3 (en)
MY (1) MY121575A (en)
PL (1) PL184098B1 (en)
RU (1) RU2127454C1 (en)
SG (1) SG52253A1 (en)
TR (1) TR199600132A2 (en)
TW (1) TW297970B (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3484757B2 (en) * 1994-05-13 2004-01-06 ソニー株式会社 Noise reduction method and noise section detection method for voice signal
JP3591068B2 (en) * 1995-06-30 2004-11-17 ソニー株式会社 Noise reduction method for audio signal
CN1166160C (en) * 1996-05-31 2004-09-08 皇家菲利浦电子有限公司 Arrangement for suppressing interfering component of input signal
EP0992978A4 (en) * 1998-03-30 2002-01-16 Mitsubishi Electric Corp Noise reduction device and a noise reduction method
JP3454206B2 (en) 1999-11-10 2003-10-06 三菱電機株式会社 Noise suppression device and noise suppression method
AU2002241476A1 (en) * 2000-11-22 2002-07-24 Defense Group Inc. Noise filtering utilizing non-gaussian signal statistics
US6985859B2 (en) * 2001-03-28 2006-01-10 Matsushita Electric Industrial Co., Ltd. Robust word-spotting system using an intelligibility criterion for reliable keyword detection under adverse and unknown noisy environments
JP3457293B2 (en) * 2001-06-06 2003-10-14 三菱電機株式会社 Noise suppression device and noise suppression method
JP3427381B2 (en) * 2001-06-20 2003-07-14 富士通株式会社 Noise cancellation method and apparatus
US6985709B2 (en) * 2001-06-22 2006-01-10 Intel Corporation Noise dependent filter
WO2003001173A1 (en) * 2001-06-22 2003-01-03 Rti Tech Pte Ltd A noise-stripping device
DE60238127D1 (en) * 2001-09-20 2010-12-09 Honeywell Inc VISUAL DISPLAY OF UNINSTALLED CONTROL PANEL FUNCTIONS
AU2003209821B2 (en) * 2002-03-13 2006-11-16 Hear Ip Pty Ltd A method and system for controlling potentially harmful signals in a signal arranged to convey speech
AUPS102902A0 (en) * 2002-03-13 2002-04-11 Hearworks Pty Ltd A method and system for reducing potentially harmful noise in a signal arranged to convey speech
RU2206960C1 (en) * 2002-06-24 2003-06-20 Общество с ограниченной ответственностью "Центр речевых технологий" Method and device for data signal noise suppression
US7016651B1 (en) * 2002-12-17 2006-03-21 Marvell International Ltd. Apparatus and method for measuring signal quality of a wireless communications link
US6909759B2 (en) * 2002-12-19 2005-06-21 Texas Instruments Incorporated Wireless receiver using noise levels for postscaling an equalized signal having temporal diversity
US6920193B2 (en) * 2002-12-19 2005-07-19 Texas Instruments Incorporated Wireless receiver using noise levels for combining signals having spatial diversity
US7065166B2 (en) 2002-12-19 2006-06-20 Texas Instruments Incorporated Wireless receiver and method for determining a representation of noise level of a signal
GB2398913B (en) * 2003-02-27 2005-08-17 Motorola Inc Noise estimation in speech recognition
CN100417043C (en) * 2003-08-05 2008-09-03 华邦电子股份有限公司 Automatic gain controller and its control method
JP4519169B2 (en) * 2005-02-02 2010-08-04 富士通株式会社 Signal processing method and signal processing apparatus
JP4836720B2 (en) * 2006-09-07 2011-12-14 株式会社東芝 Noise suppressor
GB2450886B (en) * 2007-07-10 2009-12-16 Motorola Inc Voice activity detector and a method of operation
RU2470385C2 (en) * 2008-03-05 2012-12-20 Войсэйдж Корпорейшн System and method of enhancing decoded tonal sound signal
JP5012995B2 (en) * 2008-03-24 2012-08-29 株式会社Ｊｖｃケンウッド Audio signal processing apparatus and audio signal processing method
KR101475864B1 (en) 2008-11-13 2014-12-23 삼성전자 주식회사 Apparatus and method for eliminating noise
KR101615766B1 (en) * 2008-12-19 2016-05-12 엘지전자 주식회사 Impulsive noise detector, method of detecting impulsive noise and impulsive noise remover system
FR2944640A1 (en) * 2009-04-17 2010-10-22 France Telecom METHOD AND DEVICE FOR OBJECTIVE EVALUATION OF THE VOICE QUALITY OF A SPEECH SIGNAL TAKING INTO ACCOUNT THE CLASSIFICATION OF THE BACKGROUND NOISE CONTAINED IN THE SIGNAL.
CN103354937B (en) * 2011-02-10 2015-07-29 杜比实验室特许公司 Comprise the aftertreatment of the medium filtering of noise suppression gain
US9173025B2 (en) 2012-02-08 2015-10-27 Dolby Laboratories Licensing Corporation Combined suppression of noise, echo, and out-of-location signals
US8712076B2 (en) 2012-02-08 2014-04-29 Dolby Laboratories Licensing Corporation Post-processing including median filtering of noise suppression gains
US9231740B2 (en) 2013-07-12 2016-01-05 Intel Corporation Transmitter noise in system budget
US10504538B2 (en) 2017-06-01 2019-12-10 Sorenson Ip Holdings, Llc Noise reduction by application of two thresholds in each frequency band in audio signals
CN107786709A (en) * 2017-11-09 2018-03-09 广东欧珀移动通信有限公司 Call noise-reduction method, device, terminal device and computer-readable recording medium
CN111199174A (en) * 2018-11-19 2020-05-26 北京京东尚科信息技术有限公司 Information processing method, device, system and computer readable storage medium
CN111477237B (en) * 2019-01-04 2022-01-07 北京京东尚科信息技术有限公司 Audio noise reduction method and device and electronic equipment
CN111429930B (en) * 2020-03-16 2023-02-28 云知声智能科技股份有限公司 Noise reduction model processing method and system based on adaptive sampling rate
CN113035222B (en) * 2021-02-26 2023-10-27 北京安声浩朗科技有限公司 Voice noise reduction method and device, filter determination method and voice interaction equipment

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60140399A (en) * 1983-12-28 1985-07-25 松下電器産業株式会社 Noise remover
US4630304A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic background noise estimator for a noise suppression system
US4628529A (en) * 1985-07-01 1986-12-09 Motorola, Inc. Noise suppression system
US4630305A (en) * 1985-07-01 1986-12-16 Motorola, Inc. Automatic gain selector for a noise suppression system
IL84948A0 (en) * 1987-12-25 1988-06-30 D S P Group Israel Ltd Noise reduction system
US5007094A (en) * 1989-04-07 1991-04-09 Gte Products Corporation Multipulse excited pole-zero filtering approach for noise reduction
US5212764A (en) * 1989-04-19 1993-05-18 Ricoh Company, Ltd. Noise eliminating apparatus and speech recognition apparatus using the same
US5097510A (en) * 1989-11-07 1992-03-17 Gs Systems, Inc. Artificial intelligence pattern-recognition-based noise reduction system for speech processing
CA2032765C (en) * 1989-12-21 1995-12-12 Hidetaka Yoshikawa Variable rate encoding and communicating apparatus
AU633673B2 (en) * 1990-01-18 1993-02-04 Matsushita Electric Industrial Co., Ltd. Signal processing device
JP2797616B2 (en) * 1990-03-16 1998-09-17 松下電器産業株式会社 Noise suppression device
CA2040025A1 (en) * 1990-04-09 1991-10-10 Hideki Satoh Speech detection apparatus with influence of input level and noise reduced
EP0459362B1 (en) * 1990-05-28 1997-01-08 Matsushita Electric Industrial Co., Ltd. Voice signal processor
DE4137404C2 (en) * 1991-11-14 1997-07-10 Philips Broadcast Television S Method of reducing noise
FI92535C (en) * 1992-02-14 1994-11-25 Nokia Mobile Phones Ltd Noise reduction system for speech signals
JPH05344010A (en) * 1992-06-08 1993-12-24 Mitsubishi Electric Corp Noise reduction device for radio communication equipment
JPH06140949A (en) * 1992-10-27 1994-05-20 Mitsubishi Electric Corp Noise reduction device
US5479560A (en) * 1992-10-30 1995-12-26 Technology Research Association Of Medical And Welfare Apparatus Formant detecting device and speech processing apparatus
WO1995002288A1 (en) * 1993-07-07 1995-01-19 Picturetel Corporation Reduction of background noise for speech enhancement
US5617472A (en) * 1993-12-28 1997-04-01 Nec Corporation Noise suppression of acoustic signal in telephone set
JP3484757B2 (en) * 1994-05-13 2004-01-06 ソニー株式会社 Noise reduction method and noise section detection method for voice signal
US5544250A (en) * 1994-07-18 1996-08-06 Motorola Noise suppression system and method therefor

Also Published As

Publication number Publication date
ATE209389T1 (en) 2001-12-15
RU2127454C1 (en) 1999-03-10
SG52253A1 (en) 1998-09-28
DE69617069D1 (en) 2002-01-03
EP0727769A2 (en) 1996-08-21
CA2169424C (en) 2007-07-10
US6032114A (en) 2000-02-29
CN1140869A (en) 1997-01-22
EP0727769B1 (en) 2001-11-21
EP0727769A3 (en) 1998-04-29
PL184098B1 (en) 2002-08-30
TW297970B (en) 1997-02-11
KR960032294A (en) 1996-09-17
KR100414841B1 (en) 2004-03-10
DE69617069T2 (en) 2002-07-11
JP3484801B2 (en) 2004-01-06
AU4444496A (en) 1996-08-29
MY121575A (en) 2006-02-28
JPH08221093A (en) 1996-08-30
BR9600761A (en) 1997-12-23
AU696187B2 (en) 1998-09-03
TR199600132A2 (en) 1996-10-21
ES2163585T3 (en) 2002-02-01
PL312845A1 (en) 1996-08-19

Similar Documents

Publication Publication Date Title
CA2169424A1 (en) Method and apparatus for noise reduction by filtering based on a maximum signal-to-noise ratio and an estimated noise level
CA2169422A1 (en) Method and apparatus for reducing noise in speech signal
RU96102867A (en) METHOD FOR DECREASING NOISE AND DEVICE FOR ITS IMPLEMENTATION
RU96102854A (en) METHOD AND DEVICE FOR NOISE REDUCTION IN SPEECH SIGNAL
EP0764937A3 (en) Method for speech detection in a high-noise environment
WO2002019319A1 (en) Speech processing device and speech processing method
MY131662A (en) Noise reducing method,noise reducing apparatus and telephone set.
CA2210490A1 (en) Spectral subtraction noise suppression method
HK1057639A1 (en) Noise reduction method and device
CA2262787A1 (en) Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form
WO1999001942A3 (en) A method of noise reduction in speech signals and an apparatus for performing the method
CA2141316A1 (en) Method and Apparatus for Reducing an Undesirable Characteristic of a Spectral Estimate of a Noise Signal Between Occurrences of Voice Signals
CA2207866A1 (en) Method and apparatus for measuring the noise content of transmitted speech
EP0957471A3 (en) Measuring process for loudness quality assessment of audio signals
US6314394B1 (en) Adaptive signal separation system and method
MY118280A (en) Apparatus for compensating a frequency characteristic of a reproduction audio signal
CA2225985A1 (en) Spectrum feature parameter extracting system based on frequency weight estimation function
JPH0727398B2 (en) Constant variable perceptual weighting filter
TH34128B (en) Methods and tools for reducing noise in speech signals.
TH45398A (en) Methods and tools for reducing noise in speech signals.
CA2585240A1 (en) Lossless coding method for waveform data
JPH04251299A (en) Speech section detecting means
JPH0488400A (en) Voice recognizer for mounting on vehicle
KR970058106A (en) DTMF signal receiver and method
TH22758A (en) Methods and machines for noise reduction by filtering based on the highest signal-to-noise ratio and projected noise level.

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20160215