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MX2011009660A - Codificacion estereo avanzada basada en una combinacion de codificacion izquierda/derecha o media/lateral seleccionable de manera adaptable y de codificacion estereo parametrica. - Google Patents

Codificacion estereo avanzada basada en una combinacion de codificacion izquierda/derecha o media/lateral seleccionable de manera adaptable y de codificacion estereo parametrica.

Info

Publication number
MX2011009660A
MX2011009660A MX2011009660A MX2011009660A MX2011009660A MX 2011009660 A MX2011009660 A MX 2011009660A MX 2011009660 A MX2011009660 A MX 2011009660A MX 2011009660 A MX2011009660 A MX 2011009660A MX 2011009660 A MX2011009660 A MX 2011009660A
Authority
MX
Mexico
Prior art keywords
stereo
stereo coding
signal
encoding
mid
Prior art date
Application number
MX2011009660A
Other languages
English (en)
Inventor
Kristofer Kjoerling
Heiko Purnhagen
Pontus Carlsson
Original Assignee
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=42562759&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX2011009660(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dolby Int Ab filed Critical Dolby Int Ab
Publication of MX2011009660A publication Critical patent/MX2011009660A/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
    • G10L19/002—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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/005—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo five- or more-channel type, e.g. virtual surround
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/02—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo four-channel type, e.g. in which rear channel signals are derived from two-channel stereo signals
    • 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
    • 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
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • 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
    • H04S2420/03—Application of parametric coding in stereophonic audio systems

Landscapes

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

Abstract

La solicitud es concerniente con sistema de codificador y descodificador de audio. Una modalidad del sistema de codificador comprende una etapa de mezcla descendente para generar una señal de mezcla descendente y una señal residual basada en una señal estéreo. Además, el sistema de codificador comprende una etapa de determinación de parámetros para determinar parámetros estéreo paramétricos, tales como diferencia de intensidad de inter-canal y una correlación cruzada del inter-canal. Preferiblemente, los parámetros estéreo paramétricos son variantes en tiempo y frecuencia. Además, el sistema de codificador comprende una etapa de transformada. La etapa de transformada genera una pseudo-señal estéreo izquierda/derecha al efectuar una transformada basada en la señal de mezcla descendente y la señal residual. La pseudo-señal estéreo es procesada por un codificador estéreo perceptual. Para codificación estéreo, la codificación izquierda/derecha o codificación media/lateral es seleccionable. Preferiblemente, la selección entre codificación estéreo izquierda/derecha y codificación estéreo media/lateral es variante en tiempo y frecuencia.
MX2011009660A 2009-03-17 2010-03-05 Codificacion estereo avanzada basada en una combinacion de codificacion izquierda/derecha o media/lateral seleccionable de manera adaptable y de codificacion estereo parametrica. MX2011009660A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US16070709P 2009-03-17 2009-03-17
US21948409P 2009-06-23 2009-06-23
PCT/EP2010/052866 WO2010105926A2 (en) 2009-03-17 2010-03-05 Advanced stereo coding based on a combination of adaptively selectable left/right or mid/side stereo coding and of parametric stereo coding

Publications (1)

Publication Number Publication Date
MX2011009660A true MX2011009660A (es) 2011-09-30

Family

ID=42562759

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2011009660A MX2011009660A (es) 2009-03-17 2010-03-05 Codificacion estereo avanzada basada en una combinacion de codificacion izquierda/derecha o media/lateral seleccionable de manera adaptable y de codificacion estereo parametrica.

Country Status (12)

Country Link
US (15) US9082395B2 (es)
EP (2) EP2626855B1 (es)
JP (1) JP5214058B2 (es)
KR (2) KR101367604B1 (es)
CN (2) CN102388417B (es)
AU (1) AU2010225051B2 (es)
BR (4) BR122019023924B1 (es)
CA (5) CA2754671C (es)
ES (2) ES2519415T3 (es)
MX (1) MX2011009660A (es)
RU (3) RU2520329C2 (es)
WO (1) WO2010105926A2 (es)

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