JP4438280B2 - トランスコーダ及び符号変換方法 - Google Patents

トランスコーダ及び符号変換方法 Download PDF

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Publication number
JP4438280B2
JP4438280B2 JP2002317204A JP2002317204A JP4438280B2 JP 4438280 B2 JP4438280 B2 JP 4438280B2 JP 2002317204 A JP2002317204 A JP 2002317204A JP 2002317204 A JP2002317204 A JP 2002317204A JP 4438280 B2 JP4438280 B2 JP 4438280B2
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JP
Japan
Prior art keywords
signal
unit
gain
code
output
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Expired - Fee Related
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JP2002317204A
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English (en)
Japanese (ja)
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JP2004151424A (ja
Inventor
一範 小澤
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
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NEC Corp
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Filing date
Publication date
Priority to JP2002317204A priority Critical patent/JP4438280B2/ja
Application filed by NEC Corp filed Critical NEC Corp
Priority to AU2003271119A priority patent/AU2003271119A1/en
Priority to KR1020057007432A priority patent/KR100715014B1/ko
Priority to CA002504174A priority patent/CA2504174A1/fr
Priority to CNB2003801022915A priority patent/CN100498933C/zh
Priority to PCT/JP2003/012859 priority patent/WO2004040552A1/fr
Priority to DE60321712T priority patent/DE60321712D1/de
Priority to EP03751372A priority patent/EP1564723B1/fr
Publication of JP2004151424A publication Critical patent/JP2004151424A/ja
Priority to US11/118,346 priority patent/US7486719B2/en
Priority to HK05109774A priority patent/HK1077913A1/xx
Application granted granted Critical
Publication of JP4438280B2 publication Critical patent/JP4438280B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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

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  • 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)
JP2002317204A 2002-10-31 2002-10-31 トランスコーダ及び符号変換方法 Expired - Fee Related JP4438280B2 (ja)

Priority Applications (10)

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
EP03751372A EP1564723B1 (fr) 2002-10-31 2003-10-08 Transcodeur et procede de conversion par codeur
CA002504174A CA2504174A1 (fr) 2002-10-31 2003-10-08 Transcodeur et procede de conversion par codeur
CNB2003801022915A CN100498933C (zh) 2002-10-31 2003-10-08 代码转换机及代码转换方法
PCT/JP2003/012859 WO2004040552A1 (fr) 2002-10-31 2003-10-08 Transcodeur et procede de conversion par codeur
DE60321712T DE60321712D1 (de) 2002-10-31 2003-10-08 Transkoder und kodierkonvertierungsverfahren
AU2003271119A AU2003271119A1 (en) 2002-10-31 2003-10-08 Transcoder and coder conversion method
KR1020057007432A KR100715014B1 (ko) 2002-10-31 2003-10-08 트랜스코더 및 부호변환방법
US11/118,346 US7486719B2 (en) 2002-10-31 2005-05-02 Transcoder and code conversion method
HK05109774A HK1077913A1 (en) 2002-10-31 2005-11-03 Transcoder and coder conversion method

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
JP2004151424A JP2004151424A (ja) 2004-05-27
JP4438280B2 true JP4438280B2 (ja) 2010-03-24

Family

ID=32211714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002317204A Expired - Fee Related JP4438280B2 (ja) 2002-10-31 2002-10-31 トランスコーダ及び符号変換方法

Country Status (9)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007064256A2 (fr) * 2005-11-30 2007-06-07 Telefonaktiebolaget Lm Ericsson (Publ) Conversion efficace d'un flux vocal
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

Also Published As

Publication number Publication date
EP1564723B1 (fr) 2008-06-18
EP1564723A1 (fr) 2005-08-17
HK1077913A1 (en) 2006-02-24
KR20050061579A (ko) 2005-06-22
EP1564723A4 (fr) 2005-12-21
CA2504174A1 (fr) 2004-05-13
CN100498933C (zh) 2009-06-10
AU2003271119A1 (en) 2004-05-25
WO2004040552A1 (fr) 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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