DE60308890D1 - Kodeumsetzungsverfahren und -vorrichtung - Google Patents

Kodeumsetzungsverfahren und -vorrichtung

Info

Publication number
DE60308890D1
DE60308890D1 DE60308890T DE60308890T DE60308890D1 DE 60308890 D1 DE60308890 D1 DE 60308890D1 DE 60308890 T DE60308890 T DE 60308890T DE 60308890 T DE60308890 T DE 60308890T DE 60308890 D1 DE60308890 D1 DE 60308890D1
Authority
DE
Germany
Prior art keywords
coding method
coding
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
DE60308890T
Other languages
English (en)
Other versions
DE60308890T2 (de
Inventor
Atsushi Murashima
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 DE60308890D1 publication Critical patent/DE60308890D1/de
Publication of DE60308890T2 publication Critical patent/DE60308890T2/de
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
    • 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
    • G10L19/04—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 using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/173—Transcoding, i.e. converting between two coded representations avoiding cascaded coding-decoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE60308890T 2002-10-23 2003-10-20 Kode-umsetzungsverfahren Expired - Lifetime DE60308890T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002307733 2002-10-23
JP2002307733A JP2004151123A (ja) 2002-10-23 2002-10-23 符号変換方法、符号変換装置、プログラム及びその記憶媒体
PCT/JP2003/013347 WO2004038696A1 (ja) 2002-10-23 2003-10-20 符号変換方法とそのための符号変換装置

Publications (2)

Publication Number Publication Date
DE60308890D1 true DE60308890D1 (de) 2006-11-16
DE60308890T2 DE60308890T2 (de) 2007-05-24

Family

ID=32170946

Family Applications (2)

Application Number Title Priority Date Filing Date
DE60329129T Expired - Lifetime DE60329129D1 (de) 2002-10-23 2003-10-20 Kodeumsetzungsverfahren und Kodeumsetzungsgerät dafür
DE60308890T Expired - Lifetime DE60308890T2 (de) 2002-10-23 2003-10-20 Kode-umsetzungsverfahren

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE60329129T Expired - Lifetime DE60329129D1 (de) 2002-10-23 2003-10-20 Kodeumsetzungsverfahren und Kodeumsetzungsgerät dafür

Country Status (8)

Country Link
US (1) US20060149537A1 (de)
EP (2) EP1560201B1 (de)
JP (1) JP2004151123A (de)
CN (1) CN100524460C (de)
AU (1) AU2003273043A1 (de)
DE (2) DE60329129D1 (de)
HK (1) HK1077389A1 (de)
WO (1) WO2004038696A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4304360B2 (ja) * 2002-05-22 2009-07-29 日本電気株式会社 音声符号化復号方式間の符号変換方法および装置とその記憶媒体
EP2980797A1 (de) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audiodecodierer, Verfahren und Computerprogramm mit Zero-Input-Response zur Erzeugung eines sanften Übergangs

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69232202T2 (de) * 1991-06-11 2002-07-25 Qualcomm Inc Vocoder mit veraendlicher bitrate
JPH08146997A (ja) * 1994-11-21 1996-06-07 Hitachi Ltd 符号変換装置および符号変換システム
US5732389A (en) * 1995-06-07 1998-03-24 Lucent Technologies Inc. Voiced/unvoiced classification of speech for excitation codebook selection in celp speech decoding during frame erasures
US5867814A (en) * 1995-11-17 1999-02-02 National Semiconductor Corporation Speech coder that utilizes correlation maximization to achieve fast excitation coding, and associated coding method
JP3071388B2 (ja) * 1995-12-19 2000-07-31 国際電気株式会社 可変レート音声符号化方式
JPH1031499A (ja) * 1996-07-16 1998-02-03 Nippon Telegr & Teleph Corp <Ntt> 音声情報符号化・復号化装置および通信装置
US5995923A (en) * 1997-06-26 1999-11-30 Nortel Networks Corporation Method and apparatus for improving the voice quality of tandemed vocoders
JP3754819B2 (ja) * 1998-03-24 2006-03-15 株式会社日立国際電気 音声通信方法及び音声通信装置
US6260009B1 (en) * 1999-02-12 2001-07-10 Qualcomm Incorporated CELP-based to CELP-based vocoder packet translation
JP3365360B2 (ja) * 1999-07-28 2003-01-08 日本電気株式会社 音声信号復号方法および音声信号符号化復号方法とその装置
US7031926B2 (en) * 2000-10-23 2006-04-18 Nokia Corporation Spectral parameter substitution for the frame error concealment in a speech decoder
JP2002202799A (ja) * 2000-10-30 2002-07-19 Fujitsu Ltd 音声符号変換装置
JP4231987B2 (ja) * 2001-06-15 2009-03-04 日本電気株式会社 音声符号化復号方式間の符号変換方法、その装置、そのプログラム及び記憶媒体
JP4108317B2 (ja) * 2001-11-13 2008-06-25 日本電気株式会社 符号変換方法及び装置とプログラム並びに記憶媒体
TWI237916B (en) * 2002-05-13 2005-08-11 Sun Bridge Corp Cordless device system
JP4304360B2 (ja) * 2002-05-22 2009-07-29 日本電気株式会社 音声符号化復号方式間の符号変換方法および装置とその記憶媒体
US7231345B2 (en) * 2002-07-24 2007-06-12 Nec Corporation Method and apparatus for transcoding between different speech encoding/decoding systems
KR20050122240A (ko) * 2003-04-08 2005-12-28 닛본 덴끼 가부시끼가이샤 부호 변환 방법 및 장치
WO2004095424A1 (ja) * 2003-04-22 2004-11-04 Nec Corporation 符号変換方法及び装置とプログラム並びに記録媒体
JP4793539B2 (ja) * 2005-03-29 2011-10-12 日本電気株式会社 符号変換方法及び装置とプログラム並びにその記憶媒体

Also Published As

Publication number Publication date
US20060149537A1 (en) 2006-07-06
EP1717796A3 (de) 2008-08-06
DE60308890T2 (de) 2007-05-24
CN100524460C (zh) 2009-08-05
EP1560201A1 (de) 2005-08-03
EP1717796B1 (de) 2009-09-02
EP1560201A4 (de) 2006-01-18
CN1705979A (zh) 2005-12-07
AU2003273043A1 (en) 2004-05-13
EP1717796A2 (de) 2006-11-02
JP2004151123A (ja) 2004-05-27
HK1077389A1 (en) 2006-02-10
EP1560201B1 (de) 2006-10-04
DE60329129D1 (de) 2009-10-15
WO2004038696A1 (ja) 2004-05-06

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