BR112015031178A2 - aparelho e método para gerar um formato espectral adaptativo de ruído de conforto - Google Patents

aparelho e método para gerar um formato espectral adaptativo de ruído de conforto

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Publication number
BR112015031178A2
BR112015031178A2 BR112015031178A BR112015031178A BR112015031178A2 BR 112015031178 A2 BR112015031178 A2 BR 112015031178A2 BR 112015031178 A BR112015031178 A BR 112015031178A BR 112015031178 A BR112015031178 A BR 112015031178A BR 112015031178 A2 BR112015031178 A2 BR 112015031178A2
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BR
Brazil
Prior art keywords
audio signal
received
current frame
coefficients
receiving interface
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BR112015031178A
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English (en)
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BR112015031178B1 (pt
Inventor
Helmrich Christian
Markovic Goran
Lecomte Jérémie
Schnabel Michael
Sperschneider Ralph
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Fraunhofer Ges Forschung
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Publication of BR112015031178A2 publication Critical patent/BR112015031178A2/pt
Publication of BR112015031178B1 publication Critical patent/BR112015031178B1/pt

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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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/002—Dynamic bit allocation
    • 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
    • G10L19/012—Comfort noise or silence coding
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] 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
    • G10L19/04—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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • G10L19/12—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
    • G10L19/04—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
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—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 spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0002—Codebook adaptations
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0016—Codebook for LPC parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mathematical Physics (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

resumo da patente de invenção para: “aparelho e método para gerar um formato espectral adaptativo de ruído de conforto”. aparelho para decodificar um sinal de áudio codificado para obter um sinal de áudio reconstruído é fornecido. o aparelho compreende uma interface de recebimento (1110) para receber um ou mais quadros, um gerador de coeficiente (1120) e um reconstrutor de sinal (1130). o gerador de coeficiente (1120) está configurado para determinar, se um quadro atual dentre os um ou mais quadros for recebido pela interface de recebimento (1110) e se o quadro atual que é recebido pela interface de recebimento (1110) não estiver corrompido, um ou mais primeiros coeficientes de sinal de áudio que são compostos pelo quadro atual, em que os ditos um ou mais primeiros coeficientes de sinal de áudio indicam uma característica do sinal de áudio codificado, e um ou mais coeficientes de ruído que indicam um ruído de fundo do sinal de áudio codificado. além disso, o gerador de coeficiente (1120) está configurado para gerar um ou mais segundos coeficientes de sinal de áudio, dependendo dos um ou mais primeiros coeficientes de sinal de áudio e dependendo dos um ou mais coeficientes de ruído, se o quadro atual não for recebido pela interface de recebimento (1110) ou se o quadro atual que é recebido pela interface de recebimento (1110) estiver corrompido. o reconstrutor de sinal de áudio (1130) está configurado para reconstruir uma primeira porção do sinal de áudio reconstruído dependendo dos um ou mais primeiros coeficientes de sinal de áudio, se o quadro atual for recebido pela interface de recebimento (1110) e se o quadro atual que é recebido pela interface de recebimento (1110) não estiver corrompido. além disso, o reconstrutor de sinal de áudio (1130) está configurado para reconstruir uma segunda porção do sinal de áudio reconstruído dependendo dos um ou mais segundos coeficientes de sinal de áudio, se o quadro atual não for recebido pela interface de recebimento (1110) ou se o quadro atual que é recebido pela interface de recebimento (1110) estiver corrompido.
BR112015031178-4A 2013-06-21 2014-06-23 Aparelho e método para gerar um formato espectral adaptativo de ruído de conforto BR112015031178B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP13173154 2013-06-21
EP13173154.9 2013-06-21
EP14166998 2014-05-05
EP14166998.6 2014-05-05
PCT/EP2014/063173 WO2014202786A1 (en) 2013-06-21 2014-06-23 Apparatus and method for generating an adaptive spectral shape of comfort noise

Publications (2)

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BR112015031178A2 true BR112015031178A2 (pt) 2017-07-25
BR112015031178B1 BR112015031178B1 (pt) 2022-03-22

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BR112015031606-9A BR112015031606B1 (pt) 2013-06-21 2014-06-23 Aparelho e método para desvanecimento de sinal aperfeiçoado em diferentes domínios durante ocultação de erros
BR112015031177-6A BR112015031177B1 (pt) 2013-06-21 2014-06-23 Aparelho e método que realizam um desvanecimento de um espectro de mdct em ruído branco antes da aplicação de fdns
BR112015031343-4A BR112015031343B1 (pt) 2013-06-21 2014-06-23 Aparelho e método que realizam conceitos aperfeiçoados para tcx ltp
BR112015031180-6A BR112015031180B1 (pt) 2013-06-21 2014-06-23 Aparelho e método para gerar um formato espectral adaptativo de ruído de conforto
BR112015031178-4A BR112015031178B1 (pt) 2013-06-21 2014-06-23 Aparelho e método para gerar um formato espectral adaptativo de ruído de conforto

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BR112015031606-9A BR112015031606B1 (pt) 2013-06-21 2014-06-23 Aparelho e método para desvanecimento de sinal aperfeiçoado em diferentes domínios durante ocultação de erros
BR112015031177-6A BR112015031177B1 (pt) 2013-06-21 2014-06-23 Aparelho e método que realizam um desvanecimento de um espectro de mdct em ruído branco antes da aplicação de fdns
BR112015031343-4A BR112015031343B1 (pt) 2013-06-21 2014-06-23 Aparelho e método que realizam conceitos aperfeiçoados para tcx ltp
BR112015031180-6A BR112015031180B1 (pt) 2013-06-21 2014-06-23 Aparelho e método para gerar um formato espectral adaptativo de ruído de conforto

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US (15) US9978377B2 (pt)
EP (5) EP3011558B1 (pt)
JP (5) JP6214071B2 (pt)
KR (5) KR101785227B1 (pt)
CN (9) CN110289005B (pt)
AU (5) AU2014283123B2 (pt)
BR (5) BR112015031606B1 (pt)
CA (5) CA2914869C (pt)
ES (5) ES2635555T3 (pt)
HK (5) HK1224009A1 (pt)
MX (5) MX351363B (pt)
MY (5) MY182209A (pt)
PL (5) PL3011561T3 (pt)
PT (5) PT3011557T (pt)
RU (5) RU2665279C2 (pt)
SG (5) SG11201510519RA (pt)
TW (5) TWI564884B (pt)
WO (5) WO2014202788A1 (pt)
ZA (1) ZA201600310B (pt)

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