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MX2018009140A - Decodificador de audio multicanal, codificador de audio multicanal, métodos y programa de computadora usando un ajuste en base a señales residuales de una contribución de una señal decorrelacionada. - Google Patents

Decodificador de audio multicanal, codificador de audio multicanal, métodos y programa de computadora usando un ajuste en base a señales residuales de una contribución de una señal decorrelacionada.

Info

Publication number
MX2018009140A
MX2018009140A MX2018009140A MX2018009140A MX2018009140A MX 2018009140 A MX2018009140 A MX 2018009140A MX 2018009140 A MX2018009140 A MX 2018009140A MX 2018009140 A MX2018009140 A MX 2018009140A MX 2018009140 A MX2018009140 A MX 2018009140A
Authority
MX
Mexico
Prior art keywords
channel audio
signal
residual
contribution
methods
Prior art date
Application number
MX2018009140A
Other languages
English (en)
Inventor
Christian Helmrich
Sascha Dick
Johannes Hilpert
Andreas Hölzer
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2018009140A publication Critical patent/MX2018009140A/es

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
    • G10L19/008—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
    • G10L19/20—Vocoders using multiple modes using sound class specific coding, hybrid encoders or object based 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
    • G10L19/16—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Un decodificador de audio multicanal para proveer por lo menos dos señales de audio egresadas sobre la base de una representación codificada está configurado para llevar a cabo una combinación ponderada de una señal de mezcla descendente, una señal decorrelacionada y una señal residual, de manera de obtener una de las señales de audio egresadas. El decodificador de audio multicanal está configurado para determinar un ponderal que describe una contribución de la señal decorrelacionada en la combinación ponderada en función de la señal residual. A codificador de audio multicanal para proveer una representación codificada de una señal de audio multicanal está configurado para obtener una señal de mezcla descendente sobre la base de la señal de audio multicanal, para proveer parámetros que describen dependencias entre los canales de la señal de audio multicanal, y para proveer una señal residual. El codificador de audio multicanal está configurado para variar una cantidad de señal residual incluida en la representación codificada en función de la señal de audio multicanal.
MX2018009140A 2013-07-22 2016-01-14 Decodificador de audio multicanal, codificador de audio multicanal, métodos y programa de computadora usando un ajuste en base a señales residuales de una contribución de una señal decorrelacionada. MX2018009140A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP13177375 2013-07-22
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

Publications (1)

Publication Number Publication Date
MX2018009140A true MX2018009140A (es) 2020-09-17

Family

ID=48808223

Family Applications (3)

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MX2016000513A MX361809B (es) 2013-07-22 2014-07-17 Decodificador de audio multicanal, codificador de audio multicanal, metodos y programa de computadora usando un ajuste en base a señales residuales de una contribucion de una señal decorrelacionada.
MX2023001960A MX2023001960A (es) 2013-07-22 2016-01-14 Decodificador de audio multicanal, codificador de audio multicanal, metodos y programa de computadora usando un ajuste en base a se?ales residuales de una contribucion de una se?al decorrelacionada.
MX2018009140A MX2018009140A (es) 2013-07-22 2016-01-14 Decodificador de audio multicanal, codificador de audio multicanal, métodos y programa de computadora usando un ajuste en base a señales residuales de una contribución de una señal decorrelacionada.

Family Applications Before (2)

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MX2016000513A MX361809B (es) 2013-07-22 2014-07-17 Decodificador de audio multicanal, codificador de audio multicanal, metodos y programa de computadora usando un ajuste en base a señales residuales de una contribucion de una señal decorrelacionada.
MX2023001960A MX2023001960A (es) 2013-07-22 2016-01-14 Decodificador de audio multicanal, codificador de audio multicanal, metodos y programa de computadora usando un ajuste en base a se?ales residuales de una contribucion de una se?al decorrelacionada.

Country Status (19)

Country Link
US (4) US10839812B2 (es)
EP (5) EP2830053A1 (es)
JP (5) JP6253776B2 (es)
KR (2) KR101893016B1 (es)
CN (2) CN105556596B (es)
AR (1) AR097013A1 (es)
AU (3) AU2014295212B2 (es)
BR (3) BR122022015729B1 (es)
CA (2) CA2974271C (es)
ES (3) ES2701812T3 (es)
MX (3) MX361809B (es)
MY (2) MY198121A (es)
PL (3) PL3660844T3 (es)
PT (2) PT3425633T (es)
RU (1) RU2676233C2 (es)
SG (3) SG11201600403VA (es)
TW (1) TWI566234B (es)
WO (1) WO2015011020A1 (es)
ZA (1) ZA201601081B (es)

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