DE69830816D1 - Mehrstufige Audiodekodierung - Google Patents

Mehrstufige Audiodekodierung

Info

Publication number
DE69830816D1
DE69830816D1 DE69830816T DE69830816T DE69830816D1 DE 69830816 D1 DE69830816 D1 DE 69830816D1 DE 69830816 T DE69830816 T DE 69830816T DE 69830816 T DE69830816 T DE 69830816T DE 69830816 D1 DE69830816 D1 DE 69830816D1
Authority
DE
Germany
Prior art keywords
audio decoding
level audio
level
decoding
audio
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
DE69830816T
Other languages
English (en)
Other versions
DE69830816T2 (de
Inventor
Toshiyuki Nomura
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 DE69830816D1 publication Critical patent/DE69830816D1/de
Publication of DE69830816T2 publication Critical patent/DE69830816T2/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
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G10L19/107—Sparse pulse excitation, e.g. by using algebraic codebook

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Analysis (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DE69830816T 1997-04-04 1998-04-02 Mehrstufige Audiodekodierung Expired - Lifetime DE69830816T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9086663A JP3063668B2 (ja) 1997-04-04 1997-04-04 音声符号化装置及び復号装置
JP8666397 1997-04-04

Publications (2)

Publication Number Publication Date
DE69830816D1 true DE69830816D1 (de) 2005-08-18
DE69830816T2 DE69830816T2 (de) 2006-04-20

Family

ID=13893282

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69830816T Expired - Lifetime DE69830816T2 (de) 1997-04-04 1998-04-02 Mehrstufige Audiodekodierung
DE69837296T Expired - Lifetime DE69837296T2 (de) 1997-04-04 1998-04-02 Verfahren und Vorrichtung zur Audiokodierung mittels einer mehrstufigen Mehrimpulsanregung

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69837296T Expired - Lifetime DE69837296T2 (de) 1997-04-04 1998-04-02 Verfahren und Vorrichtung zur Audiokodierung mittels einer mehrstufigen Mehrimpulsanregung

Country Status (5)

Country Link
US (1) US6192334B1 (de)
EP (2) EP0869477B1 (de)
JP (1) JP3063668B2 (de)
CA (1) CA2233146C (de)
DE (2) DE69830816T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2252170A1 (en) 1998-10-27 2000-04-27 Bruno Bessette A method and device for high quality coding of wideband speech and audio signals
WO2000069007A1 (en) * 1999-05-06 2000-11-16 Sandia Corporation Fuel cell and membrane
US6236960B1 (en) * 1999-08-06 2001-05-22 Motorola, Inc. Factorial packing method and apparatus for information coding
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
JP4789430B2 (ja) * 2004-06-25 2011-10-12 パナソニック株式会社 音声符号化装置、音声復号化装置、およびこれらの方法
US8265929B2 (en) * 2004-12-08 2012-09-11 Electronics And Telecommunications Research Institute Embedded code-excited linear prediction speech coding and decoding apparatus and method
BRPI0520115B1 (pt) * 2005-03-09 2018-07-17 Ericsson Telefon Ab L M métodos para codificar e para decodificar sinais de áudio e codificador e decodificador para sinais de áudio
US8000967B2 (en) 2005-03-09 2011-08-16 Telefonaktiebolaget Lm Ericsson (Publ) Low-complexity code excited linear prediction encoding
JP5403949B2 (ja) * 2007-03-02 2014-01-29 パナソニック株式会社 符号化装置および符号化方法
JP4871894B2 (ja) * 2007-03-02 2012-02-08 パナソニック株式会社 符号化装置、復号装置、符号化方法および復号方法
BRPI0808198A8 (pt) * 2007-03-02 2017-09-12 Panasonic Corp Dispositivo de codificação e método de codificação
US7889103B2 (en) * 2008-03-13 2011-02-15 Motorola Mobility, Inc. Method and apparatus for low complexity combinatorial coding of signals
US20110035214A1 (en) * 2008-04-09 2011-02-10 Panasonic Corporation Encoding device and encoding method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4890327A (en) * 1987-06-03 1989-12-26 Itt Corporation Multi-rate digital voice coder apparatus
SE463691B (sv) 1989-05-11 1991-01-07 Ericsson Telefon Ab L M Foerfarande att utplacera excitationspulser foer en lineaerprediktiv kodare (lpc) som arbetar enligt multipulsprincipen
US5060269A (en) * 1989-05-18 1991-10-22 General Electric Company Hybrid switched multi-pulse/stochastic speech coding technique
US5091945A (en) * 1989-09-28 1992-02-25 At&T Bell Laboratories Source dependent channel coding with error protection
US4980916A (en) * 1989-10-26 1990-12-25 General Electric Company Method for improving speech quality in code excited linear predictive speech coding
US5307441A (en) * 1989-11-29 1994-04-26 Comsat Corporation Wear-toll quality 4.8 kbps speech codec
US5097507A (en) * 1989-12-22 1992-03-17 General Electric Company Fading bit error protection for digital cellular multi-pulse speech coder
JP3114197B2 (ja) 1990-11-02 2000-12-04 日本電気株式会社 音声パラメータ符号化方法
US5138661A (en) * 1990-11-13 1992-08-11 General Electric Company Linear predictive codeword excited speech synthesizer
US5127053A (en) * 1990-12-24 1992-06-30 General Electric Company Low-complexity method for improving the performance of autocorrelation-based pitch detectors
EP0657874B1 (de) * 1993-12-10 2001-03-14 Nec Corporation Stimmkodierer und Verfahren zum Suchen von Kodebüchern
JP3024467B2 (ja) 1993-12-10 2000-03-21 日本電気株式会社 音声符号化装置
AU696092B2 (en) * 1995-01-12 1998-09-03 Digital Voice Systems, Inc. Estimation of excitation parameters

Also Published As

Publication number Publication date
EP1473710B1 (de) 2007-03-07
EP0869477B1 (de) 2005-07-13
EP0869477A2 (de) 1998-10-07
JPH10282997A (ja) 1998-10-23
JP3063668B2 (ja) 2000-07-12
US6192334B1 (en) 2001-02-20
EP0869477A3 (de) 1999-04-21
DE69830816T2 (de) 2006-04-20
EP1473710A1 (de) 2004-11-03
CA2233146A1 (en) 1998-10-04
CA2233146C (en) 2002-02-19
DE69837296D1 (de) 2007-04-19
DE69837296T2 (de) 2007-11-08

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Legal Events

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