BR122022015729B1 - Decodificador de áudio de múltiplos canais e método para fornecer pelo menos dois sinais de áudio de saída com base em uma representação codificada - Google Patents

Decodificador de áudio de múltiplos canais e método para fornecer pelo menos dois sinais de áudio de saída com base em uma representação codificada Download PDF

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BR122022015729B1
BR122022015729B1 BR122022015729-7A BR122022015729A BR122022015729B1 BR 122022015729 B1 BR122022015729 B1 BR 122022015729B1 BR 122022015729 A BR122022015729 A BR 122022015729A BR 122022015729 B1 BR122022015729 B1 BR 122022015729B1
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signal
channel audio
residual
decorrelated
audio decoder
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BR122022015729-7A
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Portuguese (pt)
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BR122022015729A2 (enExample
BR122022015729A8 (pt
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Sascha DICK
Christian Helmrich
Johannes Hilpert
Andreas Holzer
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Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V.
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Publication of BR122022015729A8 publication Critical patent/BR122022015729A8/pt
Publication of BR122022015729B1 publication Critical patent/BR122022015729B1/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
    • G10L19/008—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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • G10L19/04—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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S1/00—Two-channel systems
    • H04S1/007—Two-channel systems in which the audio signals are in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • 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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/07—Synergistic effects of band splitting and sub-band processing

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Human Computer Interaction (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Analysis (AREA)
  • Theoretical Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
BR122022015729-7A 2013-07-22 2014-07-17 Decodificador de áudio de múltiplos canais e método para fornecer pelo menos dois sinais de áudio de saída com base em uma representação codificada BR122022015729B1 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP13177375.6 2013-07-22
EP13177375 2013-07-22
EP13189309.1 2013-10-18
EP13189309.1A EP2830053A1 (en) 2013-07-22 2013-10-18 Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal
PCT/EP2014/065416 WO2015011020A1 (en) 2013-07-22 2014-07-17 Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal

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BR122022015729A2 BR122022015729A2 (enExample) 2017-07-25
BR122022015729A8 BR122022015729A8 (pt) 2022-11-29
BR122022015729B1 true BR122022015729B1 (pt) 2023-03-14

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BR122022015729-7A BR122022015729B1 (pt) 2013-07-22 2014-07-17 Decodificador de áudio de múltiplos canais e método para fornecer pelo menos dois sinais de áudio de saída com base em uma representação codificada
BR122022015747-5A BR122022015747B1 (pt) 2013-07-22 2014-07-17 Decodificador e codificador de áudio de múltiplos canais, método para fornecer pelo menos dois sinais de áudio de saída com base em uma representação codificada e método para fornecer uma representação codificada de um sinal de áudio de múltiplos canais
BR112016001248-8A BR112016001248B1 (pt) 2013-07-22 2014-07-17 Decodificador de áudio de múltiplos canais e método para fornecer pelo menos dois sinais de áudio de saída com base em uma representação codificada

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BR112016001248-8A BR112016001248B1 (pt) 2013-07-22 2014-07-17 Decodificador de áudio de múltiplos canais e método para fornecer pelo menos dois sinais de áudio de saída com base em uma representação codificada

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US (4) US10839812B2 (enExample)
EP (5) EP2830053A1 (enExample)
JP (5) JP6253776B2 (enExample)
KR (2) KR101893016B1 (enExample)
CN (2) CN105556596B (enExample)
AR (1) AR097013A1 (enExample)
AU (3) AU2014295212B2 (enExample)
BR (3) BR122022015729B1 (enExample)
CA (2) CA2974271C (enExample)
ES (3) ES2701812T3 (enExample)
MX (3) MX361809B (enExample)
MY (2) MY192214A (enExample)
PL (3) PL3425633T3 (enExample)
PT (2) PT3425633T (enExample)
RU (1) RU2676233C2 (enExample)
SG (3) SG11201600403VA (enExample)
TW (1) TWI566234B (enExample)
WO (1) WO2015011020A1 (enExample)
ZA (1) ZA201601081B (enExample)

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