AR080842A1 - Codificador de audio, decodificador de audio y metodos relacionados para el procesamiento de senales de audio multicanal utilizando prediccion compleja - Google Patents

Codificador de audio, decodificador de audio y metodos relacionados para el procesamiento de senales de audio multicanal utilizando prediccion compleja

Info

Publication number
AR080842A1
AR080842A1 ARP110101166A ARP110101166A AR080842A1 AR 080842 A1 AR080842 A1 AR 080842A1 AR P110101166 A ARP110101166 A AR P110101166A AR P110101166 A ARP110101166 A AR P110101166A AR 080842 A1 AR080842 A1 AR 080842A1
Authority
AR
Argentina
Prior art keywords
signal
audio
combination
complex
decoder
Prior art date
Application number
ARP110101166A
Other languages
English (en)
Original Assignee
Fraunhofer Ges Forschung
Dolby Int Ab
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, Dolby Int Ab filed Critical Fraunhofer Ges Forschung
Publication of AR080842A1 publication Critical patent/AR080842A1/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
    • G10L19/04—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
    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation

Landscapes

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

Abstract

Un codificador de audio y un decodificador de audio están basados en una combinacion de dos canales de audio (201, 202) para obtener una primera senal de combinacion (204) como una senal central y una senal residual (205), la cual se puede obtener utilizando una senal lateral previsible proveniente de la senal central. La primera senal de combinacion y la senal residual de prediccion están codificadas (209) y escritas (212) en una corriente de datos (213) junto con la informacion de prediccion (206) obtenida por un optimizador (207) en base a un objetivo de optimizacion (208). Un decodificador utiliza la senal residual de prediccion, la primera senal de combinacion y la informacion de prediccion para obtener una primera senal de canal decodificada y una segunda senal de canal decodificada. En un ejemplo de codificador o en un ejemplo de decodificador, una transformada real-a-imaginaria se puede aplicar para estimar la parte imaginaria del espectro de la primera senal de combinacion. Para calcular la senal de prediccion utilizada en la obtencion de la senal residual de prediccion, la primera senal de combinacion de valor real se multiplica por una porcion real de la informacion de prediccion compleja y la parte imaginaria estimada de la primera senal de combinacion se multiplica por una porcion imaginaria de la informacion de prediccion compleja.
ARP110101166A 2010-04-09 2011-04-07 Codificador de audio, decodificador de audio y metodos relacionados para el procesamiento de senales de audio multicanal utilizando prediccion compleja AR080842A1 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US32268810P 2010-04-09 2010-04-09
US36390610P 2010-07-13 2010-07-13
EP10169432A EP2375409A1 (en) 2010-04-09 2010-07-13 Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction

Publications (1)

Publication Number Publication Date
AR080842A1 true AR080842A1 (es) 2012-05-09

Family

ID=43828187

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP110101166A AR080842A1 (es) 2010-04-09 2011-04-07 Codificador de audio, decodificador de audio y metodos relacionados para el procesamiento de senales de audio multicanal utilizando prediccion compleja

Country Status (18)

Country Link
US (1) US8655670B2 (es)
EP (8) EP2375409A1 (es)
JP (1) JP5705964B2 (es)
KR (1) KR101425155B1 (es)
CN (1) CN103098126B (es)
AR (1) AR080842A1 (es)
AU (1) AU2011238010B2 (es)
CA (1) CA2804907C (es)
ES (3) ES2701456T3 (es)
HK (1) HK1180823A1 (es)
MX (1) MX2012011603A (es)
MY (1) MY160467A (es)
PL (7) PL2947656T3 (es)
RU (1) RU2577195C2 (es)
SG (1) SG184815A1 (es)
TW (1) TWI444990B (es)
WO (1) WO2011124473A1 (es)
ZA (1) ZA201208364B (es)

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Also Published As

Publication number Publication date
SG184815A1 (en) 2012-11-29
EP2947653B1 (en) 2018-10-31
TWI444990B (zh) 2014-07-11
EP2947655B1 (en) 2018-10-24
EP2947655A1 (en) 2015-11-25
PL2947652T3 (pl) 2019-04-30
EP2543038B1 (en) 2015-08-26
KR20130014561A (ko) 2013-02-07
CA2804907C (en) 2016-05-31
US8655670B2 (en) 2014-02-18
EP2947652A1 (en) 2015-11-25
WO2011124473A1 (en) 2011-10-13
JP2013528822A (ja) 2013-07-11
EP2543038A1 (en) 2013-01-09
CA2804907A1 (en) 2011-10-13
AU2011238010A1 (en) 2012-11-08
EP2375409A1 (en) 2011-10-12
TW201205557A (en) 2012-02-01
CN103098126A (zh) 2013-05-08
ES2701862T3 (es) 2019-02-26
MX2012011603A (es) 2012-11-30
EP2947656A1 (en) 2015-11-25
EP2947654A1 (en) 2015-11-25
PL2947654T3 (pl) 2019-04-30
RU2012147587A (ru) 2014-05-20
AU2011238010B2 (en) 2014-01-16
KR101425155B1 (ko) 2014-08-01
PL2947657T3 (pl) 2019-04-30
US20130030819A1 (en) 2013-01-31
EP2947653A1 (en) 2015-11-25
EP2947657B1 (en) 2018-10-24
HK1180823A1 (en) 2013-10-25
CN103098126B (zh) 2015-07-22
EP2947657A1 (en) 2015-11-25
ES2552839T3 (es) 2015-12-02
EP2947656B1 (en) 2018-09-19
PL2947656T3 (pl) 2019-03-29
ES2701456T3 (es) 2019-02-22
MY160467A (en) 2017-03-15
PL2947655T3 (pl) 2019-04-30
PL2543038T3 (pl) 2016-01-29
ZA201208364B (en) 2013-07-31
EP2947654B1 (en) 2018-10-17
RU2577195C2 (ru) 2016-03-10
PL2947653T3 (pl) 2019-04-30
JP5705964B2 (ja) 2015-04-22
EP2947652B1 (en) 2018-11-14

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