DE69425226D1 - Sprachdekoder zur Erzeugung von Hintergrundgeräuschen - Google Patents

Sprachdekoder zur Erzeugung von Hintergrundgeräuschen

Info

Publication number
DE69425226D1
DE69425226D1 DE69425226T DE69425226T DE69425226D1 DE 69425226 D1 DE69425226 D1 DE 69425226D1 DE 69425226 T DE69425226 T DE 69425226T DE 69425226 T DE69425226 T DE 69425226T DE 69425226 D1 DE69425226 D1 DE 69425226D1
Authority
DE
Germany
Prior art keywords
background noise
speech decoder
generating background
generating
speech
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
DE69425226T
Other languages
English (en)
Other versions
DE69425226T2 (de
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
Application granted granted Critical
Publication of DE69425226D1 publication Critical patent/DE69425226D1/de
Publication of DE69425226T2 publication Critical patent/DE69425226T2/de
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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/012—Comfort noise or silence coding
DE69425226T 1993-12-10 1994-12-07 Sprachdekoder zur Erzeugung von Hintergrundgeräuschen Expired - Lifetime DE69425226T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5310521A JP2616549B2 (ja) 1993-12-10 1993-12-10 音声復号装置

Publications (2)

Publication Number Publication Date
DE69425226D1 true DE69425226D1 (de) 2000-08-17
DE69425226T2 DE69425226T2 (de) 2001-03-01

Family

ID=18006236

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69425226T Expired - Lifetime DE69425226T2 (de) 1993-12-10 1994-12-07 Sprachdekoder zur Erzeugung von Hintergrundgeräuschen

Country Status (5)

Country Link
US (1) US5677985A (de)
EP (1) EP0657872B1 (de)
JP (1) JP2616549B2 (de)
CA (1) CA2137416C (de)
DE (1) DE69425226T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3157116B2 (ja) * 1996-03-29 2001-04-16 三菱電機株式会社 音声符号化伝送システム
GB2312360B (en) * 1996-04-12 2001-01-24 Olympus Optical Co Voice signal coding apparatus
JPH1091194A (ja) * 1996-09-18 1998-04-10 Sony Corp 音声復号化方法及び装置
GB2338630B (en) * 1998-06-20 2000-07-26 Motorola Ltd Speech decoder and method of operation
US6240386B1 (en) * 1998-08-24 2001-05-29 Conexant Systems, Inc. Speech codec employing noise classification for noise compensation
SE9903553D0 (sv) 1999-01-27 1999-10-01 Lars Liljeryd Enhancing percepptual performance of SBR and related coding methods by adaptive noise addition (ANA) and noise substitution limiting (NSL)
GB2356538A (en) * 1999-11-22 2001-05-23 Mitel Corp Comfort noise generation for open discontinuous transmission systems
SE0001926D0 (sv) 2000-05-23 2000-05-23 Lars Liljeryd Improved spectral translation/folding in the subband domain
JP2002149200A (ja) * 2000-08-31 2002-05-24 Matsushita Electric Ind Co Ltd 音声処理装置及び音声処理方法
JP3566197B2 (ja) * 2000-08-31 2004-09-15 松下電器産業株式会社 雑音抑圧装置及び雑音抑圧方法
US8605911B2 (en) 2001-07-10 2013-12-10 Dolby International Ab Efficient and scalable parametric stereo coding for low bitrate audio coding applications
SE0202159D0 (sv) 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
US7469206B2 (en) 2001-11-29 2008-12-23 Coding Technologies Ab Methods for improving high frequency reconstruction
SE0202770D0 (sv) 2002-09-18 2002-09-18 Coding Technologies Sweden Ab Method for reduction of aliasing introduces by spectral envelope adjustment in real-valued filterbanks
JP4282520B2 (ja) * 2004-03-24 2009-06-24 シャープ株式会社 信号処理方法、信号出力装置、信号処理装置、画像処理装置、及び画像形成装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58171095A (ja) * 1982-03-31 1983-10-07 富士通株式会社 雑音抑圧方式
DE69029120T2 (de) * 1989-04-25 1997-04-30 Toshiba Kawasaki Kk Stimmenkodierer
US5307441A (en) * 1989-11-29 1994-04-26 Comsat Corporation Wear-toll quality 4.8 kbps speech codec
JP3256215B2 (ja) * 1990-02-22 2002-02-12 日本電気株式会社 音声符号化装置
DE69133296T2 (de) * 1990-02-22 2004-01-29 Nec Corp Sprachcodierer
JP2518765B2 (ja) * 1991-05-31 1996-07-31 国際電気株式会社 音声符号化通信方式及びその装置
JP3167385B2 (ja) * 1991-10-28 2001-05-21 日本電信電話株式会社 音声信号伝送方法

Also Published As

Publication number Publication date
EP0657872A2 (de) 1995-06-14
EP0657872A3 (de) 1997-06-11
CA2137416C (en) 1998-11-24
JPH07160294A (ja) 1995-06-23
DE69425226T2 (de) 2001-03-01
CA2137416A1 (en) 1995-06-11
US5677985A (en) 1997-10-14
EP0657872B1 (de) 2000-07-12
JP2616549B2 (ja) 1997-06-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition