BRPI0410130A - sistemas e métodos melhorados de codificação de áudio usando acoplamento de componente espectral e regeneração de componente espectral - Google Patents

sistemas e métodos melhorados de codificação de áudio usando acoplamento de componente espectral e regeneração de componente espectral

Info

Publication number
BRPI0410130A
BRPI0410130A BRPI0410130-8A BRPI0410130A BRPI0410130A BR PI0410130 A BRPI0410130 A BR PI0410130A BR PI0410130 A BRPI0410130 A BR PI0410130A BR PI0410130 A BRPI0410130 A BR PI0410130A
Authority
BR
Brazil
Prior art keywords
signal
spectral components
spectral component
coupling
spectral
Prior art date
Application number
BRPI0410130-8A
Other languages
English (en)
Inventor
Robert Loring Andersen
Michael Mead Truman
Philip Anthony Williams
Stephen Decker Vernon
Original Assignee
Dolby Lab Licensing Corp
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 Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of BRPI0410130A publication Critical patent/BRPI0410130A/pt
Publication of BRPI0410130B1 publication Critical patent/BRPI0410130B1/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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders

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

Abstract

"SISTEMAS E MéTODOS MELHORADOS DE CODIFICAçãO DE áUDIO USANDO ACOPLAMENTO DE COMPONENTE ESPECTRAL E REGENERAçãO DE COMPONENTE ESPECTRAL". A presente invenção refere-se a um codificador de áudio descarta componentes espectrais de um sinal de entrada e usa um acoplamento de sinal para a redução das exigências de capacidade de informação de um sinal codificado. Um acoplamento de canal representa componentes espectrais selecionados de múltiplos canais de sinais em uma forma compósita. Um decodificador de áudio sintetiza componentes espectrais para substituição dos componentes espectrais descartados, e gera componentes espectrais para sinais de canal individuais a partir do sinal de canal acoplado. O codificador provê fatores de escala no sinal codificado que melhoram a eficiência do decodificador para a geração de sinais de saída que substancialmente preservam a energia espectral dos sinais de entrada originais.
BRPI0410130-8A 2003-05-08 2004-04-30 "método e codificador para codificação de sinais de áudio de entrada, e método e decodificador para a decodificação de um sinal codificado" BRPI0410130B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/434,449 2003-05-08
US10/434,449 US7318035B2 (en) 2003-05-08 2003-05-08 Audio coding systems and methods using spectral component coupling and spectral component regeneration
PCT/US2004/013217 WO2004102532A1 (en) 2003-05-08 2004-04-30 Improved audio coding systems and methods using spectral component coupling and spectral component regeneration

Publications (2)

Publication Number Publication Date
BRPI0410130A true BRPI0410130A (pt) 2006-05-16
BRPI0410130B1 BRPI0410130B1 (pt) 2018-06-05

Family

ID=33416693

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0410130-8A BRPI0410130B1 (pt) 2003-05-08 2004-04-30 "método e codificador para codificação de sinais de áudio de entrada, e método e decodificador para a decodificação de um sinal codificado"

Country Status (19)

Country Link
US (1) US7318035B2 (pt)
EP (5) EP3757994B1 (pt)
JP (1) JP4782685B2 (pt)
KR (1) KR101085477B1 (pt)
CN (1) CN100394476C (pt)
AU (1) AU2004239655B2 (pt)
BR (1) BRPI0410130B1 (pt)
CA (1) CA2521601C (pt)
DK (1) DK1620845T3 (pt)
ES (2) ES2664397T3 (pt)
HU (1) HUE045759T2 (pt)
IL (1) IL171287A (pt)
MX (1) MXPA05011979A (pt)
MY (1) MY138877A (pt)
PL (1) PL1620845T3 (pt)
PT (1) PT2535895T (pt)
SI (1) SI2535895T1 (pt)
TW (1) TWI324762B (pt)
WO (1) WO2004102532A1 (pt)

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HUE045759T2 (hu) 2020-01-28
IL171287A (en) 2009-09-22
EP2535895A1 (en) 2012-12-19
CN1781141A (zh) 2006-05-31
SI2535895T1 (sl) 2019-12-31
TWI324762B (en) 2010-05-11
US20040225505A1 (en) 2004-11-11
CA2521601C (en) 2013-08-20
PT2535895T (pt) 2019-10-24
EP1620845B1 (en) 2018-02-28
MY138877A (en) 2009-08-28
CA2521601A1 (en) 2004-11-25
KR101085477B1 (ko) 2011-11-21
ES2664397T3 (es) 2018-04-19
EP4057282A1 (en) 2022-09-14
CN100394476C (zh) 2008-06-11
US7318035B2 (en) 2008-01-08
EP3093844B1 (en) 2020-10-21
EP1620845A1 (en) 2006-02-01
EP3093844A1 (en) 2016-11-16
ES2832606T3 (es) 2021-06-10
EP4057282B1 (en) 2023-08-09
WO2004102532A1 (en) 2004-11-25
JP4782685B2 (ja) 2011-09-28
KR20060014386A (ko) 2006-02-15
MXPA05011979A (es) 2006-02-02
EP3757994B1 (en) 2022-04-27
BRPI0410130B1 (pt) 2018-06-05
PL1620845T3 (pl) 2018-06-29
AU2004239655A1 (en) 2004-11-25
AU2004239655B2 (en) 2009-06-25
JP2007501441A (ja) 2007-01-25
TW200504683A (en) 2005-02-01
EP3757994A1 (en) 2020-12-30
DK1620845T3 (en) 2018-05-07
EP2535895B1 (en) 2019-09-11

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