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WO2009038013A1 - Noise removal system, noise removal method, and noise removal program - Google Patents

Noise removal system, noise removal method, and noise removal program Download PDF

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Publication number
WO2009038013A1
WO2009038013A1 PCT/JP2008/066402 JP2008066402W WO2009038013A1 WO 2009038013 A1 WO2009038013 A1 WO 2009038013A1 JP 2008066402 W JP2008066402 W JP 2008066402W WO 2009038013 A1 WO2009038013 A1 WO 2009038013A1
Authority
WO
WIPO (PCT)
Prior art keywords
audio
estimated
noise removal
estimated audio
noise
Prior art date
Application number
PCT/JP2008/066402
Other languages
French (fr)
Japanese (ja)
Inventor
Masanori Tsujikawa
Ryosuke Isotani
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to JP2009533120A priority Critical patent/JP5344251B2/en
Publication of WO2009038013A1 publication Critical patent/WO2009038013A1/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Noise Elimination (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Provided is a noise removal system which can accurately remove a noise. The noise removal system includes: noise estimation means which estimates a noise contained in an input signal; first estimated audio derivation means which acquires a first estimated audio by correcting the input signal so as to remove the estimated noise from the input signal; audio model storage means which stores an audio model expressing an audio; second estimated audio derivation means which acquires a second estimated audio by correcting the first estimated audio by using an audio model; multiplication means which multiplies the first estimated audio by a weighting coefficient for the first estimated audio and multiplies the second estimated audio by a weighting coefficient for the second estimated audio; and third estimated audio derivation means which adds the first estimated audio multiplied by the weighting coefficient for the first estimated audio and the second estimated audio multiplied by the weighting coefficient for the second estimated audio so as to obtain a third estimated audio.
PCT/JP2008/066402 2007-09-21 2008-09-11 Noise removal system, noise removal method, and noise removal program WO2009038013A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009533120A JP5344251B2 (en) 2007-09-21 2008-09-11 Noise removal system, noise removal method, and noise removal program

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007245817 2007-09-21
JP2007-245817 2007-09-21

Publications (1)

Publication Number Publication Date
WO2009038013A1 true WO2009038013A1 (en) 2009-03-26

Family

ID=40467830

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/066402 WO2009038013A1 (en) 2007-09-21 2008-09-11 Noise removal system, noise removal method, and noise removal program

Country Status (2)

Country Link
JP (1) JP5344251B2 (en)
WO (1) WO2009038013A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012215715A (en) * 2011-03-31 2012-11-08 Fujitsu Ltd Noise estimation device and noise estimation program
JP2013081156A (en) * 2011-09-21 2013-05-02 Panasonic Corp Noise canceler
JP2013186258A (en) * 2012-03-07 2013-09-19 Internatl Business Mach Corp <Ibm> Noise reduction method, program, and apparatus
JP2014139658A (en) * 2012-12-20 2014-07-31 Toshiba Corp Signal processing device, signal processing method and program
JP2015084264A (en) * 2013-10-25 2015-04-30 株式会社大入 Two-dimensional grayscale image creation method and device related on audio, manufacturing method of two-dimensional grayscale image print related on audio, acoustic waveform reproduction method and device, and acoustic waveform noise removal method and device
WO2016207978A1 (en) * 2015-06-23 2016-12-29 株式会社大入 Method and device for manufacturing book with audio, and method and device for reproducing acoustic waveform
CN114093379A (en) * 2021-12-15 2022-02-25 荣耀终端有限公司 Noise elimination method and device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09258768A (en) * 1996-03-25 1997-10-03 Mitsubishi Electric Corp Under-noise voice recognizing device and under-noise voice recognizing method
JP2002140096A (en) * 2000-06-02 2002-05-17 Canon Inc Signal processing system
JP2003140700A (en) * 2001-11-05 2003-05-16 Nec Corp Method and device for noise removal
JP2006201287A (en) * 2005-01-18 2006-08-03 Advanced Telecommunication Research Institute International Noise suppressor and speech recognition system
JP2007033920A (en) * 2005-07-27 2007-02-08 Nec Corp System, method, and program for noise suppression
JP2007156364A (en) * 2005-12-08 2007-06-21 Nippon Telegr & Teleph Corp <Ntt> Device and method for voice recognition, program thereof, and recording medium thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09258768A (en) * 1996-03-25 1997-10-03 Mitsubishi Electric Corp Under-noise voice recognizing device and under-noise voice recognizing method
JP2002140096A (en) * 2000-06-02 2002-05-17 Canon Inc Signal processing system
JP2003140700A (en) * 2001-11-05 2003-05-16 Nec Corp Method and device for noise removal
JP2006201287A (en) * 2005-01-18 2006-08-03 Advanced Telecommunication Research Institute International Noise suppressor and speech recognition system
JP2007033920A (en) * 2005-07-27 2007-02-08 Nec Corp System, method, and program for noise suppression
JP2007156364A (en) * 2005-12-08 2007-06-21 Nippon Telegr & Teleph Corp <Ntt> Device and method for voice recognition, program thereof, and recording medium thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012215715A (en) * 2011-03-31 2012-11-08 Fujitsu Ltd Noise estimation device and noise estimation program
JP2013081156A (en) * 2011-09-21 2013-05-02 Panasonic Corp Noise canceler
JP2013186258A (en) * 2012-03-07 2013-09-19 Internatl Business Mach Corp <Ibm> Noise reduction method, program, and apparatus
JP2014139658A (en) * 2012-12-20 2014-07-31 Toshiba Corp Signal processing device, signal processing method and program
JP2015084264A (en) * 2013-10-25 2015-04-30 株式会社大入 Two-dimensional grayscale image creation method and device related on audio, manufacturing method of two-dimensional grayscale image print related on audio, acoustic waveform reproduction method and device, and acoustic waveform noise removal method and device
WO2016207978A1 (en) * 2015-06-23 2016-12-29 株式会社大入 Method and device for manufacturing book with audio, and method and device for reproducing acoustic waveform
CN114093379A (en) * 2021-12-15 2022-02-25 荣耀终端有限公司 Noise elimination method and device
CN114093379B (en) * 2021-12-15 2022-06-21 北京荣耀终端有限公司 Noise elimination method and device

Also Published As

Publication number Publication date
JP5344251B2 (en) 2013-11-20
JPWO2009038013A1 (en) 2011-01-06

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