BRPI0802614A2 - métodos e aparelhos para codificação e decodificação de sinais de áudio baseados em objeto - Google Patents

métodos e aparelhos para codificação e decodificação de sinais de áudio baseados em objeto Download PDF

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Publication number
BRPI0802614A2
BRPI0802614A2 BRPI0802614-9A BRPI0802614A BRPI0802614A2 BR PI0802614 A2 BRPI0802614 A2 BR PI0802614A2 BR PI0802614 A BRPI0802614 A BR PI0802614A BR PI0802614 A2 BRPI0802614 A2 BR PI0802614A2
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Brazil
Prior art keywords
downmix
information
encoding
methods
audio signals
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BRPI0802614-9A
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English (en)
Inventor
Dong Soo Kim
Hee Suk Pang
Jae Hyun Lim
Sung Yong Yoon
Hyun Kook Lee
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Lg Electronics Inc
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Publication of BRPI0802614A2 publication Critical patent/BRPI0802614A2/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
    • G10L19/0018—Speech coding using phonetic or linguistical decoding of the source; Reconstruction using text-to-speech synthesis
    • 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
    • G10L19/04—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

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

Abstract

MéTODOS E APARELHOS PARA CODIFICAçãO E DECODIFICAçAO DE SINAIS DE áUDIO BASEADOS EM OBJETO. São fornecidos um método e aparelho para decodificação de áudio e um método e aparelho para codificação de áudio que podem processar eficientemente sinais de áudio baseados em objeto. O método de decodificação de áudio inclui receber um sinal de mistura descendente, que é obtido por mistura descendente uma pluralidade de sinais de objeto, e informação secundária de objeto, extrair metadados a partir da informação secundária de objeto e exibir uma informação referente a sinais de objeto baseados nos metadados.
BRPI0802614-9A 2007-02-14 2008-02-14 métodos e aparelhos para codificação e decodificação de sinais de áudio baseados em objeto BRPI0802614A2 (pt)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US90108907P 2007-02-14 2007-02-14
US90164207P 2007-02-16 2007-02-16
US90381807P 2007-02-28 2007-02-28
US90768907P 2007-04-13 2007-04-13
US92402707P 2007-04-27 2007-04-27
US94762007P 2007-07-02 2007-07-02
US94837307P 2007-07-06 2007-07-06
PCT/KR2008/000883 WO2008100098A1 (en) 2007-02-14 2008-02-14 Methods and apparatuses for encoding and decoding object-based audio signals

Publications (1)

Publication Number Publication Date
BRPI0802614A2 true BRPI0802614A2 (pt) 2011-08-30

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BRPI0802614-9A BRPI0802614A2 (pt) 2007-02-14 2008-02-14 métodos e aparelhos para codificação e decodificação de sinais de áudio baseados em objeto
BRPI0802613-0A BRPI0802613A2 (pt) 2007-02-14 2008-02-14 métodos e aparelhos para codificação e decodificação de sinais de áudio baseados em objeto

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BRPI0802613-0A BRPI0802613A2 (pt) 2007-02-14 2008-02-14 métodos e aparelhos para codificação e decodificação de sinais de áudio baseados em objeto

Country Status (11)

Country Link
US (7) US8296158B2 (pt)
EP (3) EP2111617B1 (pt)
JP (4) JP2010506232A (pt)
KR (3) KR101049143B1 (pt)
AT (1) ATE526659T1 (pt)
AU (3) AU2008215232B2 (pt)
BR (2) BRPI0802614A2 (pt)
CA (3) CA2645913C (pt)
MX (3) MX2008012986A (pt)
TW (3) TWI431610B (pt)
WO (3) WO2008100099A1 (pt)

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