DE69423703D1 - Noise reduction device for pre-processing and / or post-processing of speech signals - Google Patents

Noise reduction device for pre-processing and / or post-processing of speech signals

Info

Publication number
DE69423703D1
DE69423703D1 DE69423703T DE69423703T DE69423703D1 DE 69423703 D1 DE69423703 D1 DE 69423703D1 DE 69423703 T DE69423703 T DE 69423703T DE 69423703 T DE69423703 T DE 69423703T DE 69423703 D1 DE69423703 D1 DE 69423703D1
Authority
DE
Germany
Prior art keywords
processing
post
noise reduction
reduction device
speech 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
DE69423703T
Other languages
German (de)
Other versions
DE69423703T2 (en
Inventor
Kazunori Ozawa
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Publication of DE69423703D1 publication Critical patent/DE69423703D1/en
Application granted granted Critical
Publication of DE69423703T2 publication Critical patent/DE69423703T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility

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)
  • Filters That Use Time-Delay Elements (AREA)
DE1994623703 1993-11-29 1994-11-29 Noise reduction device for pre-processing and / or post-processing of speech signals Expired - Lifetime DE69423703T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29717693A JP2739811B2 (en) 1993-11-29 1993-11-29 Noise suppression method

Publications (2)

Publication Number Publication Date
DE69423703D1 true DE69423703D1 (en) 2000-05-04
DE69423703T2 DE69423703T2 (en) 2000-07-27

Family

ID=17843166

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1994623703 Expired - Lifetime DE69423703T2 (en) 1993-11-29 1994-11-29 Noise reduction device for pre-processing and / or post-processing of speech signals

Country Status (3)

Country Link
EP (1) EP0655731B1 (en)
JP (1) JP2739811B2 (en)
DE (1) DE69423703T2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3591068B2 (en) * 1995-06-30 2004-11-17 ソニー株式会社 Noise reduction method for audio signal
US7225001B1 (en) * 2000-04-24 2007-05-29 Telefonaktiebolaget Lm Ericsson (Publ) System and method for distributed noise suppression
KR101235830B1 (en) * 2007-12-06 2013-02-21 한국전자통신연구원 Apparatus for enhancing quality of speech codec and method therefor
US8768406B2 (en) * 2010-08-11 2014-07-01 Bone Tone Communications Ltd. Background sound removal for privacy and personalization use
JP6759898B2 (en) 2016-09-08 2020-09-23 富士通株式会社 Utterance section detection device, utterance section detection method, and computer program for utterance section detection

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU633673B2 (en) * 1990-01-18 1993-02-04 Matsushita Electric Industrial Co., Ltd. Signal processing device
EP0459364B1 (en) * 1990-05-28 1996-08-14 Matsushita Electric Industrial Co., Ltd. Noise signal prediction system
JPH05188994A (en) * 1992-01-07 1993-07-30 Sony Corp Noise suppression device

Also Published As

Publication number Publication date
EP0655731B1 (en) 2000-03-29
JPH07152395A (en) 1995-06-16
JP2739811B2 (en) 1998-04-15
EP0655731A2 (en) 1995-05-31
DE69423703T2 (en) 2000-07-27
EP0655731A3 (en) 1997-05-28

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