BRPI0817800A8 - Método e aparelho para a geração de uma camada de melhoramento em um sistema de codificação de áudio - Google Patents

Método e aparelho para a geração de uma camada de melhoramento em um sistema de codificação de áudio

Info

Publication number
BRPI0817800A8
BRPI0817800A8 BRPI0817800A BRPI0817800A BRPI0817800A8 BR PI0817800 A8 BRPI0817800 A8 BR PI0817800A8 BR PI0817800 A BRPI0817800 A BR PI0817800A BR PI0817800 A BRPI0817800 A BR PI0817800A BR PI0817800 A8 BRPI0817800 A8 BR PI0817800A8
Authority
BR
Brazil
Prior art keywords
scaled
audio signal
encoded
encoded audio
coding system
Prior art date
Application number
BRPI0817800A
Other languages
English (en)
Inventor
P Ashley James
Alastair Gibbs Jonathan
Mittal Udar
Original Assignee
Motorola Inc
Motorola Solutions Inc
Motorola Mobility Inc
Motorola Mobility Llc
Google Technology Holdings LLC
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 Motorola Inc, Motorola Solutions Inc, Motorola Mobility Inc, Motorola Mobility Llc, Google Technology Holdings LLC filed Critical Motorola Inc
Publication of BRPI0817800A2 publication Critical patent/BRPI0817800A2/pt
Publication of BRPI0817800A8 publication Critical patent/BRPI0817800A8/pt

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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

MÉTODO E APARELHO PARA A GERAÇÃO DE UMA CAMADA DE MELHORAMENTO EM UM SISTEMA DE CODIFICAÇÃO DE ÁUDIO. Durante uma operação, um sinal de entrada a ser codificado é recebido e codificado para produção de um sinal de áudio codificado. O sinal de áudio codificado então é escalonado com uma pluralidade de sinal de áudio codificado escalonado para a produção de uma pluralidade de sinais de áudio codificados escalonados, cada um tendo um valor de ganho associado e uma pluralidade de valores de erro é determinada existindo entre o sinal de entrada e cada um da pluralidade de sinais de áudio codificados escalonados. Um valor de ganho então é escolhido, que está associado a um sinal de áudio codificado escalonado resultando em um valor de erro baixo existente entre o sinal de entrada e o sinal de áudio codificado escalonado resultando em um valor de erro baixo existente entre o sinal de entrada e o sinal de áudio codificado escalonado. Finalmente, o valor de erro baixo é transmitido juntamente com o valor de ganho como parte de uma camada de melhoramento para o sinal de áudio codificado.
BRPI0817800A 2007-10-25 2008-09-25 Método e aparelho para a geração de uma camada de melhoramento em um sistema de codificação de áudio BRPI0817800A8 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US98256607P 2007-10-25 2007-10-25
US12/187,423 US8209190B2 (en) 2007-10-25 2008-08-07 Method and apparatus for generating an enhancement layer within an audio coding system
PCT/US2008/077693 WO2009055192A1 (en) 2007-10-25 2008-09-25 Method and apparatus for generating an enhancement layer within an audio coding system

Publications (2)

Publication Number Publication Date
BRPI0817800A2 BRPI0817800A2 (pt) 2015-03-24
BRPI0817800A8 true BRPI0817800A8 (pt) 2015-11-03

Family

ID=39930381

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0817800A BRPI0817800A8 (pt) 2007-10-25 2008-09-25 Método e aparelho para a geração de uma camada de melhoramento em um sistema de codificação de áudio

Country Status (8)

Country Link
US (1) US8209190B2 (pt)
EP (1) EP2206112A1 (pt)
KR (1) KR101125429B1 (pt)
CN (1) CN101836252B (pt)
BR (1) BRPI0817800A8 (pt)
MX (1) MX2010004479A (pt)
RU (1) RU2469422C2 (pt)
WO (1) WO2009055192A1 (pt)

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Also Published As

Publication number Publication date
CN101836252A (zh) 2010-09-15
CN101836252B (zh) 2016-06-15
US20090112607A1 (en) 2009-04-30
EP2206112A1 (en) 2010-07-14
RU2010120878A (ru) 2011-11-27
BRPI0817800A2 (pt) 2015-03-24
RU2469422C2 (ru) 2012-12-10
KR101125429B1 (ko) 2012-03-28
US8209190B2 (en) 2012-06-26
MX2010004479A (es) 2010-05-03
WO2009055192A1 (en) 2009-04-30
KR20100063127A (ko) 2010-06-10

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