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WO2008102207A3 - Method of estimating noise levels in a communication system - Google Patents

Method of estimating noise levels in a communication system Download PDF

Info

Publication number
WO2008102207A3
WO2008102207A3 PCT/IB2007/004498 IB2007004498W WO2008102207A3 WO 2008102207 A3 WO2008102207 A3 WO 2008102207A3 IB 2007004498 W IB2007004498 W IB 2007004498W WO 2008102207 A3 WO2008102207 A3 WO 2008102207A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
communication system
input values
noise
estimating noise
Prior art date
Application number
PCT/IB2007/004498
Other languages
French (fr)
Other versions
WO2008102207A2 (en
Inventor
Koen Vos
Karsten Vandborg Sorensen
Jon Bergenheim
Original Assignee
Skype Ltd
Koen Vos
Karsten Vandborg Sorensen
Jon Bergenheim
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 Skype Ltd, Koen Vos, Karsten Vandborg Sorensen, Jon Bergenheim filed Critical Skype Ltd
Priority to CA2679476A priority Critical patent/CA2679476C/en
Priority to BRPI0721316-6A2A priority patent/BRPI0721316A2/en
Priority to EP07872475A priority patent/EP2132734B1/en
Priority to DE602007012596T priority patent/DE602007012596D1/en
Priority to JP2009550325A priority patent/JP4927957B2/en
Priority to CN2007800515472A priority patent/CN101641735B/en
Priority to AT07872475T priority patent/ATE498887T1/en
Publication of WO2008102207A2 publication Critical patent/WO2008102207A2/en
Publication of WO2008102207A3 publication Critical patent/WO2008102207A3/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Multimedia (AREA)
  • Noise Elimination (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Dc Digital Transmission (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

A method of estimating noise in data containing voice information and noise comprising the steps of receiving the data as a sequence of input values; transforming the data by applying a first non linear mapping to the input values wherein the derivative function of the mapping decreases in magnitude as the input values increase in magnitude smoothing the transformed data; and transforming the smoothed transformed data by applying a second non linear mapping that is opposite to the first non linear mapping, to determine an estimate of the noise in the inputted data.
PCT/IB2007/004498 2007-02-20 2007-12-20 Method of estimating noise levels in a communication system WO2008102207A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA2679476A CA2679476C (en) 2007-02-20 2007-12-20 Method of estimating noise levels in a communication system
BRPI0721316-6A2A BRPI0721316A2 (en) 2007-02-20 2007-12-20 Noise estimation method and device for estimating data noise containing voice and noise information
EP07872475A EP2132734B1 (en) 2007-02-20 2007-12-20 Method of estimating noise levels in a communication system
DE602007012596T DE602007012596D1 (en) 2007-02-20 2007-12-20 METHOD FOR ESTIMATING NOISE LEVELS IN A COMMUNICATION SYSTEM
JP2009550325A JP4927957B2 (en) 2007-02-20 2007-12-20 Method for evaluating noise level in a communication system
CN2007800515472A CN101641735B (en) 2007-02-20 2007-12-20 Method of estimating noise levels in a communication system
AT07872475T ATE498887T1 (en) 2007-02-20 2007-12-20 METHOD FOR ESTIMATING NOISE LEVELS IN A COMMUNICATIONS SYSTEM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0703275.8A GB0703275D0 (en) 2007-02-20 2007-02-20 Method of estimating noise levels in a communication system
GB0703275.8 2007-02-20

Publications (2)

Publication Number Publication Date
WO2008102207A2 WO2008102207A2 (en) 2008-08-28
WO2008102207A3 true WO2008102207A3 (en) 2008-10-30

Family

ID=37908947

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/004498 WO2008102207A2 (en) 2007-02-20 2007-12-20 Method of estimating noise levels in a communication system

Country Status (10)

Country Link
US (1) US8838444B2 (en)
EP (1) EP2132734B1 (en)
JP (1) JP4927957B2 (en)
CN (1) CN101641735B (en)
AT (1) ATE498887T1 (en)
BR (1) BRPI0721316A2 (en)
CA (1) CA2679476C (en)
DE (1) DE602007012596D1 (en)
GB (1) GB0703275D0 (en)
WO (1) WO2008102207A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009078093A1 (en) * 2007-12-18 2009-06-25 Fujitsu Limited Non-speech section detecting method and non-speech section detecting device
US8977242B1 (en) 2009-04-06 2015-03-10 Wendell Brown Method and apparatus for content presentation in association with a telephone call
GB0919672D0 (en) 2009-11-10 2009-12-23 Skype Ltd Noise suppression
US9589580B2 (en) 2011-03-14 2017-03-07 Cochlear Limited Sound processing based on a confidence measure
JP5732976B2 (en) * 2011-03-31 2015-06-10 沖電気工業株式会社 Speech segment determination device, speech segment determination method, and program
KR101788484B1 (en) 2013-06-21 2017-10-19 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. Audio decoding with reconstruction of corrupted or not received frames using tcx ltp
US20170365255A1 (en) * 2016-06-15 2017-12-21 Adam Kupryjanow Far field automatic speech recognition pre-processing
US10104464B2 (en) 2016-08-25 2018-10-16 Bragi GmbH Wireless earpiece and smart glasses system and method
US10200780B2 (en) 2016-08-29 2019-02-05 Bragi GmbH Method and apparatus for conveying battery life of wireless earpiece
US11490858B2 (en) 2016-08-31 2022-11-08 Bragi GmbH Disposable sensor array wearable device sleeve system and method
EP3573058B1 (en) * 2018-05-23 2021-02-24 Harman Becker Automotive Systems GmbH Dry sound and ambient sound separation

Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1607938A1 (en) * 2004-06-15 2005-12-21 Microsoft Corporation Gain-constrained noise suppression

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JPH07193548A (en) * 1993-12-25 1995-07-28 Sony Corp Noise reduction processing method
CN1178204C (en) * 1996-11-07 2004-12-01 松下电器产业株式会社 Sound source vector generation device, sound encoding device, and sound decoding device
FR2768544B1 (en) * 1997-09-18 1999-11-19 Matra Communication VOICE ACTIVITY DETECTION METHOD
US6826528B1 (en) * 1998-09-09 2004-11-30 Sony Corporation Weighted frequency-channel background noise suppressor
US6718301B1 (en) * 1998-11-11 2004-04-06 Starkey Laboratories, Inc. System for measuring speech content in sound
SE9903553D0 (en) * 1999-01-27 1999-10-01 Lars Liljeryd Enhancing conceptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
DE19948308C2 (en) * 1999-10-06 2002-05-08 Cortologic Ag Method and device for noise suppression in speech transmission
US20020041678A1 (en) * 2000-08-18 2002-04-11 Filiz Basburg-Ertem Method and apparatus for integrated echo cancellation and noise reduction for fixed subscriber terminals
US6873732B2 (en) * 2001-07-09 2005-03-29 Xerox Corporation Method and apparatus for resolving perspective distortion in a document image and for calculating line sums in images
US20030187637A1 (en) * 2002-03-29 2003-10-02 At&T Automatic feature compensation based on decomposition of speech and noise
US7242762B2 (en) * 2002-06-24 2007-07-10 Freescale Semiconductor, Inc. Monitoring and control of an adaptive filter in a communication system
KR20040044217A (en) * 2002-11-19 2004-05-28 주식회사 인티스 Apparatus and Method for Voice Quality Enhancement in Digital Communications
JP2007535193A (en) 2003-07-16 2007-11-29 スカイプ・リミテッド Peer-to-peer telephone system and method
TWI233590B (en) * 2003-09-26 2005-06-01 Ind Tech Res Inst Energy feature extraction method for noisy speech recognition
KR20060094078A (en) * 2003-10-16 2006-08-28 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Voice motion detection device and method
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EP1607938A1 (en) * 2004-06-15 2005-12-21 Microsoft Corporation Gain-constrained noise suppression

Also Published As

Publication number Publication date
DE602007012596D1 (en) 2011-03-31
US8838444B2 (en) 2014-09-16
EP2132734A2 (en) 2009-12-16
CN101641735A (en) 2010-02-03
EP2132734B1 (en) 2011-02-16
JP4927957B2 (en) 2012-05-09
CA2679476A1 (en) 2008-08-28
ATE498887T1 (en) 2011-03-15
BRPI0721316A2 (en) 2014-02-18
US20080201137A1 (en) 2008-08-21
JP2010519583A (en) 2010-06-03
WO2008102207A2 (en) 2008-08-28
CA2679476C (en) 2015-11-24
CN101641735B (en) 2012-01-25
GB0703275D0 (en) 2007-03-28

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