DE602004014919D1 - Codeumsetzungsverfahren und einrichtung - Google Patents

Codeumsetzungsverfahren und einrichtung

Info

Publication number
DE602004014919D1
DE602004014919D1 DE602004014919T DE602004014919T DE602004014919D1 DE 602004014919 D1 DE602004014919 D1 DE 602004014919D1 DE 602004014919 T DE602004014919 T DE 602004014919T DE 602004014919 T DE602004014919 T DE 602004014919T DE 602004014919 D1 DE602004014919 D1 DE 602004014919D1
Authority
DE
Germany
Prior art keywords
implementing method
code implementing
code
implementing
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
DE602004014919T
Other languages
English (en)
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
Publication of DE602004014919D1 publication Critical patent/DE602004014919D1/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
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

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)
DE602004014919T 2003-04-08 2004-03-31 Codeumsetzungsverfahren und einrichtung Expired - Lifetime DE602004014919D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003104454 2003-04-08
PCT/JP2004/004605 WO2004090869A1 (ja) 2003-04-08 2004-03-31 符号変換方法及び装置

Publications (1)

Publication Number Publication Date
DE602004014919D1 true DE602004014919D1 (de) 2008-08-21

Family

ID=33156853

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004014919T Expired - Lifetime DE602004014919D1 (de) 2003-04-08 2004-03-31 Codeumsetzungsverfahren und einrichtung

Country Status (8)

Country Link
US (1) US7630889B2 (de)
EP (1) EP1617411B1 (de)
JP (1) JP4396524B2 (de)
KR (1) KR20050122240A (de)
CN (1) CN100578616C (de)
CA (1) CA2521445C (de)
DE (1) DE602004014919D1 (de)
WO (1) WO2004090869A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004151123A (ja) * 2002-10-23 2004-05-27 Nec Corp 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
JP4827661B2 (ja) * 2006-08-30 2011-11-30 富士通株式会社 信号処理方法及び装置
EP1903559A1 (de) * 2006-09-20 2008-03-26 Deutsche Thomson-Brandt Gmbh Verfahren und Vorrichtung zur Transkodierung von Tonsignalen
WO2009038170A1 (ja) * 2007-09-21 2009-03-26 Nec Corporation 音声処理装置、音声処理方法、プログラム及び音楽・メロディ配信システム
JPWO2009038158A1 (ja) * 2007-09-21 2011-01-06 日本電気株式会社 音声復号装置、音声復号方法、プログラム及び携帯端末
JPWO2009038115A1 (ja) * 2007-09-21 2011-01-06 日本電気株式会社 音声符号化装置、音声符号化方法及びプログラム
CN101989429B (zh) 2009-07-31 2012-02-01 华为技术有限公司 转码方法、装置、设备以及***

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5467367A (en) * 1991-06-07 1995-11-14 Canon Kabushiki Kaisha Spread spectrum communication apparatus and telephone exchange system
US5694519A (en) * 1992-02-18 1997-12-02 Lucent Technologies, Inc. Tunable post-filter for tandem coders
US5581654A (en) * 1993-05-25 1996-12-03 Sony Corporation Method and apparatus for information encoding and decoding
JP3277699B2 (ja) * 1994-06-13 2002-04-22 ソニー株式会社 信号符号化方法及び装置並びに信号復号化方法及び装置
JP3250376B2 (ja) * 1994-06-13 2002-01-28 ソニー株式会社 情報符号化方法及び装置並びに情報復号化方法及び装置
JP3058028B2 (ja) 1994-10-31 2000-07-04 三菱電機株式会社 画像符号化データ再符号化装置
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
JP2806308B2 (ja) * 1995-06-30 1998-09-30 日本電気株式会社 音声復号化装置
JPH0950298A (ja) * 1995-08-07 1997-02-18 Mitsubishi Electric Corp 音声符号化装置及び音声復号化装置
JP3426871B2 (ja) * 1995-09-18 2003-07-14 株式会社東芝 音声信号のスペクトル形状調整方法および装置
JP2940464B2 (ja) * 1996-03-27 1999-08-25 日本電気株式会社 音声復号化装置
JP3183826B2 (ja) 1996-06-06 2001-07-09 三菱電機株式会社 音声符号化装置及び音声復号化装置
JP3357795B2 (ja) * 1996-08-16 2002-12-16 株式会社東芝 音声符号化方法および装置
JPH10116097A (ja) * 1996-10-11 1998-05-06 Olympus Optical Co Ltd 音声再生装置
JP3282661B2 (ja) * 1997-05-16 2002-05-20 ソニー株式会社 信号処理装置および方法
US6415251B1 (en) * 1997-07-11 2002-07-02 Sony Corporation Subband coder or decoder band-limiting the overlap region between a processed subband and an adjacent non-processed one
JPH11187372A (ja) 1997-12-22 1999-07-09 Kyocera Corp 多地点テレビ会議システム
FI980132A (fi) * 1998-01-21 1999-07-22 Nokia Mobile Phones Ltd Adaptoituva jälkisuodatin
WO1999044291A1 (fr) * 1998-02-26 1999-09-02 Sony Corporation Dispositif et procede de codage, dispositif et procede de decodage, support d'enregistrement de programme et de donnees
US7006787B1 (en) 2000-02-14 2006-02-28 Lucent Technologies Inc. Mobile to mobile digital wireless connection having enhanced voice quality
JP3487250B2 (ja) * 2000-02-28 2004-01-13 日本電気株式会社 符号化音声信号形式変換装置
JP3881157B2 (ja) * 2000-05-23 2007-02-14 株式会社エヌ・ティ・ティ・ドコモ 音声処理方法及び音声処理装置
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

Also Published As

Publication number Publication date
US7630889B2 (en) 2009-12-08
JPWO2004090869A1 (ja) 2006-07-06
CN1784716A (zh) 2006-06-07
KR20050122240A (ko) 2005-12-28
EP1617411B1 (de) 2008-07-09
EP1617411A4 (de) 2007-05-02
JP4396524B2 (ja) 2010-01-13
CN100578616C (zh) 2010-01-06
CA2521445A1 (en) 2004-10-21
CA2521445C (en) 2009-12-22
US20060217980A1 (en) 2006-09-28
WO2004090869A1 (ja) 2004-10-21
EP1617411A1 (de) 2006-01-18

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