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MX2009002795A - Codificacion y decodificacion de objetos de audio. - Google Patents

Codificacion y decodificacion de objetos de audio.

Info

Publication number
MX2009002795A
MX2009002795A MX2009002795A MX2009002795A MX2009002795A MX 2009002795 A MX2009002795 A MX 2009002795A MX 2009002795 A MX2009002795 A MX 2009002795A MX 2009002795 A MX2009002795 A MX 2009002795A MX 2009002795 A MX2009002795 A MX 2009002795A
Authority
MX
Mexico
Prior art keywords
audio objects
encoding
encoder
audio
decoder
Prior art date
Application number
MX2009002795A
Other languages
English (en)
Inventor
Dirk J Breebaart
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of MX2009002795A publication Critical patent/MX2009002795A/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
    • 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
    • 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
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • 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

Landscapes

  • 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)
  • Theoretical Computer Science (AREA)
  • Stereophonic System (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Se describe un sistema de audio que comprende un codificador (209) que codifica objetos de audio en un unidad de codificación (403) que genera una señal de audio de mezcla descendente y datos paramétricos que representan la pluralidad de objetos de audio. La señal de audio de mezcla descendente y datos paramétricos son transmitidos a un decodificador (215) que comprende una unidad de decodificación (301) que genera réplicas aproximadas de los objetos de audio y una unidad de renderización (303) que genera una señal de salida de los objetos de audio. El decodificador (215) contiene además un procesador (501) para generar datos de modificación de codificación que son enviados al codificador (209). El codificador (209) modifica después la codificación de los objetos de audio, y en particular modifica los datos paramétricos, en respuesta a los datos de modificación de codificación. El enfoque permite que la manipulación de los objetos de audio sea controlada por el decodificador (215) pero llevada a cabo completa o parcialmente por el codificador (209). Así, la manipulación puede efectuarse en los objetos de audio independientes reales en lugar de en réplicas aproximadas proporcionando de esta manera desempeño mejorado.
MX2009002795A 2006-09-18 2007-09-17 Codificacion y decodificacion de objetos de audio. MX2009002795A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06120819 2006-09-18
EP06123799 2006-11-10
PCT/IB2007/053748 WO2008035275A2 (en) 2006-09-18 2007-09-17 Encoding and decoding of audio objects

Publications (1)

Publication Number Publication Date
MX2009002795A true MX2009002795A (es) 2009-04-01

Family

ID=39079648

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2009002795A MX2009002795A (es) 2006-09-18 2007-09-17 Codificacion y decodificacion de objetos de audio.

Country Status (12)

Country Link
US (1) US8271290B2 (es)
EP (1) EP2067138B1 (es)
JP (1) JP5281575B2 (es)
KR (1) KR101396140B1 (es)
CN (1) CN101517637B (es)
AT (1) ATE499677T1 (es)
BR (1) BRPI0716854B1 (es)
DE (1) DE602007012730D1 (es)
MX (1) MX2009002795A (es)
PL (1) PL2067138T3 (es)
RU (1) RU2460155C2 (es)
WO (1) WO2008035275A2 (es)

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Also Published As

Publication number Publication date
KR101396140B1 (ko) 2014-05-20
CN101517637A (zh) 2009-08-26
ATE499677T1 (de) 2011-03-15
CN101517637B (zh) 2012-08-15
US20090326960A1 (en) 2009-12-31
RU2460155C2 (ru) 2012-08-27
BRPI0716854A2 (pt) 2013-10-01
JP2010503887A (ja) 2010-02-04
RU2009114741A (ru) 2010-10-27
JP5281575B2 (ja) 2013-09-04
BRPI0716854B1 (pt) 2020-09-15
BRPI0716854A8 (pt) 2019-01-15
US8271290B2 (en) 2012-09-18
EP2067138A2 (en) 2009-06-10
WO2008035275A2 (en) 2008-03-27
EP2067138B1 (en) 2011-02-23
DE602007012730D1 (de) 2011-04-07
WO2008035275A3 (en) 2008-05-29
PL2067138T3 (pl) 2011-07-29
KR20090080945A (ko) 2009-07-27

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