EP1564723A4 - Transkoder und kodierkonvertierungsverfahren - Google Patents

Transkoder und kodierkonvertierungsverfahren

Info

Publication number
EP1564723A4
EP1564723A4 EP03751372A EP03751372A EP1564723A4 EP 1564723 A4 EP1564723 A4 EP 1564723A4 EP 03751372 A EP03751372 A EP 03751372A EP 03751372 A EP03751372 A EP 03751372A EP 1564723 A4 EP1564723 A4 EP 1564723A4
Authority
EP
European Patent Office
Prior art keywords
transcoder
conversion method
coder
coder conversion
conversion
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.)
Granted
Application number
EP03751372A
Other languages
English (en)
French (fr)
Other versions
EP1564723B1 (de
EP1564723A1 (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
Publication of EP1564723A1 publication Critical patent/EP1564723A1/de
Publication of EP1564723A4 publication Critical patent/EP1564723A4/de
Application granted granted Critical
Publication of EP1564723B1 publication Critical patent/EP1564723B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

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)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
EP03751372A 2002-10-31 2003-10-08 Transkoder und kodierkonvertierungsverfahren Expired - Fee Related EP1564723B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2002317204A JP4438280B2 (ja) 2002-10-31 2002-10-31 トランスコーダ及び符号変換方法
JP2002317204 2002-10-31
PCT/JP2003/012859 WO2004040552A1 (ja) 2002-10-31 2003-10-08 トランスコーダ及び符号変換方法

Publications (3)

Publication Number Publication Date
EP1564723A1 EP1564723A1 (de) 2005-08-17
EP1564723A4 true EP1564723A4 (de) 2005-12-21
EP1564723B1 EP1564723B1 (de) 2008-06-18

Family

ID=32211714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03751372A Expired - Fee Related EP1564723B1 (de) 2002-10-31 2003-10-08 Transkoder und kodierkonvertierungsverfahren

Country Status (9)

Country Link
EP (1) EP1564723B1 (de)
JP (1) JP4438280B2 (de)
KR (1) KR100715014B1 (de)
CN (1) CN100498933C (de)
AU (1) AU2003271119A1 (de)
CA (1) CA2504174A1 (de)
DE (1) DE60321712D1 (de)
HK (1) HK1077913A1 (de)
WO (1) WO2004040552A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007064256A2 (en) * 2005-11-30 2007-06-07 Telefonaktiebolaget Lm Ericsson (Publ) Efficient speech stream conversion
DE102008009720A1 (de) * 2008-02-19 2009-08-20 Siemens Enterprise Communications Gmbh & Co. Kg Verfahren und Mittel zur Dekodierung von Hintergrundrauschinformationen
CN104751849B (zh) 2013-12-31 2017-04-19 华为技术有限公司 语音频码流的解码方法及装置
CN107369454B (zh) 2014-03-21 2020-10-27 华为技术有限公司 语音频码流的解码方法及装置
CN105869653B (zh) * 2016-05-31 2019-07-12 华为技术有限公司 话音信号处理方法和相关装置和系统

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3297156B2 (ja) * 1993-08-17 2002-07-02 三菱電機株式会社 音声判別装置
JP3483958B2 (ja) * 1994-10-28 2004-01-06 三菱電機株式会社 広帯域音声復元装置及び広帯域音声復元方法及び音声伝送システム及び音声伝送方法
JP3189614B2 (ja) * 1995-03-13 2001-07-16 松下電器産業株式会社 音声帯域拡大装置
JPH0918347A (ja) * 1995-06-28 1997-01-17 Oki Electric Ind Co Ltd 音声符号化方式変換装置
JP4296622B2 (ja) * 1998-10-26 2009-07-15 ソニー株式会社 エコー消去装置及び方法、並びに音声再生装置
JP4135242B2 (ja) * 1998-12-18 2008-08-20 ソニー株式会社 受信装置及び方法、通信装置及び方法
JP2000206995A (ja) * 1999-01-11 2000-07-28 Sony Corp 受信装置及び方法、通信装置及び方法
US6260009B1 (en) * 1999-02-12 2001-07-10 Qualcomm Incorporated CELP-based to CELP-based vocoder packet translation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JAX P ET AL: "Wideband extension of telephone speech using a hidden Markov model", IEEE WORKSHOP ON SPEECH CODING. PROCEEDINGS. MEETING THE CHALLENGES OF THE NEW MILLENNIUM, 17 September 2000 (2000-09-17), pages 133 - 135, XP002185445 *

Also Published As

Publication number Publication date
JP4438280B2 (ja) 2010-03-24
EP1564723B1 (de) 2008-06-18
EP1564723A1 (de) 2005-08-17
HK1077913A1 (en) 2006-02-24
KR20050061579A (ko) 2005-06-22
CA2504174A1 (en) 2004-05-13
CN100498933C (zh) 2009-06-10
AU2003271119A1 (en) 2004-05-25
WO2004040552A1 (ja) 2004-05-13
JP2004151424A (ja) 2004-05-27
KR100715014B1 (ko) 2007-05-09
DE60321712D1 (de) 2008-07-31
CN1708786A (zh) 2005-12-14

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