BRPI0520115A2 - métodos para codificar e para decodificar sinais de áudio e codificador e decodificador para sinais de áudio - Google Patents

métodos para codificar e para decodificar sinais de áudio e codificador e decodificador para sinais de áudio

Info

Publication number
BRPI0520115A2
BRPI0520115A2 BRPI0520115-2A BRPI0520115A BRPI0520115A2 BR PI0520115 A2 BRPI0520115 A2 BR PI0520115A2 BR PI0520115 A BRPI0520115 A BR PI0520115A BR PI0520115 A2 BRPI0520115 A2 BR PI0520115A2
Authority
BR
Brazil
Prior art keywords
audio signals
signals
signal
encoding
excitation signals
Prior art date
Application number
BRPI0520115-2A
Other languages
English (en)
Inventor
Anisse Taleb
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BRPI0520115A2 publication Critical patent/BRPI0520115A2/pt
Publication of BRPI0520115B1 publication Critical patent/BRPI0520115B1/pt

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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
    • 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)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

MéTODOS PARA CODIFICAR E PARA DECODIFICAR SINAIS DE áUDIO E CODIFICADOR E DECODIFICADOR PARA SINAIS DE áUDIO. Informação (k~ m~) sobre sinais de excitação de um primeiro sinal (S~ m~(n)) codificado por CELP é usada para derivar um conjunto limitado (10') de sinais de excitação candidatos para um segundo sinal correlacionado (S~ s~(n)). Preferivelmente, localizações de pulso dos sinais de excitação do primeiro sinal codificado (S~ m~(n)) são usadas para determinar o conjunto (10') de sinais de excitação candidatos. Mais preferivelmente, as localizações de pulso do conjunto de sinais de excitação candidatos são posicionadas na vizinhança das localizações de pulso dos sinais de excitação do primeiro sinal codificado (S~ m~(n)). O primeiro e segundo sinais (S~ m~(n), S~ s~(n)) podem ser sinais multicanal de um sinal de voz ou áudio comum. Entretanto, o primeiro e segundo sinais (S~ m~(n), S~ s~(n))podem também ser idênticos, onde a codificação do segundo sinal (S~ s~(n)) pode ser utilizada para recodificação a uma taxa de bit mais baixa.
BRPI0520115A 2005-03-09 2005-03-09 métodos para codificar e para decodificar sinais de áudio e codificador e decodificador para sinais de áudio BRPI0520115B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE2005/000349 WO2006096099A1 (en) 2005-03-09 2005-03-09 Low-complexity code excited linear prediction encoding

Publications (2)

Publication Number Publication Date
BRPI0520115A2 true BRPI0520115A2 (pt) 2009-09-15
BRPI0520115B1 BRPI0520115B1 (pt) 2018-07-17

Family

ID=36953623

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0520115A BRPI0520115B1 (pt) 2005-03-09 2005-03-09 métodos para codificar e para decodificar sinais de áudio e codificador e decodificador para sinais de áudio

Country Status (8)

Country Link
EP (1) EP1859441B1 (pt)
JP (1) JP5174651B2 (pt)
KR (1) KR101235425B1 (pt)
CN (1) CN101138022B (pt)
AT (1) ATE513290T1 (pt)
BR (1) BRPI0520115B1 (pt)
TW (1) TW200639801A (pt)
WO (1) WO2006096099A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2827327B1 (en) * 2007-04-29 2020-07-29 Huawei Technologies Co., Ltd. Method for Excitation Pulse Coding
CN102299760B (zh) 2010-06-24 2014-03-12 华为技术有限公司 脉冲编解码方法及脉冲编解码器

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3139602B2 (ja) * 1995-03-24 2001-03-05 日本電信電話株式会社 音響信号符号化方法及び復号化方法
JPH1097295A (ja) * 1996-09-24 1998-04-14 Nippon Telegr & Teleph Corp <Ntt> 音響信号符号化方法及び復号化方法
JP3622365B2 (ja) * 1996-09-26 2005-02-23 ヤマハ株式会社 音声符号化伝送方式
US7024355B2 (en) * 1997-01-27 2006-04-04 Nec Corporation Speech coder/decoder
JP3329216B2 (ja) * 1997-01-27 2002-09-30 日本電気株式会社 音声符号化装置及び音声復号装置
JP3063668B2 (ja) * 1997-04-04 2000-07-12 日本電気株式会社 音声符号化装置及び復号装置
JP3134817B2 (ja) * 1997-07-11 2001-02-13 日本電気株式会社 音声符号化復号装置
US6161086A (en) * 1997-07-29 2000-12-12 Texas Instruments Incorporated Low-complexity speech coding with backward and inverse filtered target matching and a tree structured mutitap adaptive codebook search
SE521225C2 (sv) * 1998-09-16 2003-10-14 Ericsson Telefon Ab L M Förfarande och anordning för CELP-kodning/avkodning
JP3343082B2 (ja) * 1998-10-27 2002-11-11 松下電器産業株式会社 Ｃｅｌｐ型音声符号化装置
US6539349B1 (en) * 2000-02-15 2003-03-25 Lucent Technologies Inc. Constraining pulse positions in CELP vocoding
JP2004302259A (ja) * 2003-03-31 2004-10-28 Matsushita Electric Ind Co Ltd 音響信号の階層符号化方法および階層復号化方法

Also Published As

Publication number Publication date
BRPI0520115B1 (pt) 2018-07-17
WO2006096099A1 (en) 2006-09-14
EP1859441A1 (en) 2007-11-28
KR20070116869A (ko) 2007-12-11
JP2008533522A (ja) 2008-08-21
JP5174651B2 (ja) 2013-04-03
CN101138022B (zh) 2011-08-10
ATE513290T1 (de) 2011-07-15
KR101235425B1 (ko) 2013-02-20
CN101138022A (zh) 2008-03-05
EP1859441B1 (en) 2011-06-15
TW200639801A (en) 2006-11-16

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B06T Formal requirements before examination [chapter 6.20 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B15K Others concerning applications: alteration of classification

Ipc: G10L 19/008 (2013.01), G10L 19/10 (2013.01)

B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

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