BRPI0514650A - formação de envelope temporal para codificação espacial de áudio utilizando filtragem wiener no domìnio da freqüência - Google Patents

formação de envelope temporal para codificação espacial de áudio utilizando filtragem wiener no domìnio da freqüência

Info

Publication number
BRPI0514650A
BRPI0514650A BRPI0514650-0A BRPI0514650A BRPI0514650A BR PI0514650 A BRPI0514650 A BR PI0514650A BR PI0514650 A BRPI0514650 A BR PI0514650A BR PI0514650 A BRPI0514650 A BR PI0514650A
Authority
BR
Brazil
Prior art keywords
temporal envelope
intercanal
wiener filtering
parametric
original
Prior art date
Application number
BRPI0514650-0A
Other languages
English (en)
Inventor
Mark Stuart Vinton
Alan Jeffrey Seefeldt
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
Priority to BR122018077099-6A priority Critical patent/BR122018077099B1/pt
Priority to BR122018077089A priority patent/BR122018077089B8/pt
Publication of BRPI0514650A publication Critical patent/BRPI0514650A/pt
Publication of BRPI0514650B1 publication Critical patent/BRPI0514650B1/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
    • G10L19/008—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
    • G10L19/02—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Abstract

FORMAçãO DE ENVELOPE TEMPORAL PARA CODIFICAçãO ESPACIAL DE áUDIO UTILIZANDO FILTRAGEM WIENER NO DOMìNIO DA FREQüêNCIA A presente invenção refere-se a certos tipos de codificadores de codificação espacial paramétrica utilizam diferenças de amplitude intercanal, diferenças de tempo intercanal e coerência ou correlação intercanal para construir um modelo paramétrico de um campo de som multicanal que é utilizado por um decodificador para construir uma aproximação do campo de som original. Entretanto, tal modelo paramétrico não reconstrói o envelope temporal original dos canais do campo de som, o que foi visto como sendo extremamente importante para alguns sinais de áudio. A presente invenção proporciona a reformatação do envelope temporal de um ou mais dos canais decodificados em um sistema de codificação espacial para melhor corresponder um ou mais envelopes temporais originais.
BRPI0514650-0A 2004-08-25 2005-08-15 Métodos para codificação e decodificação de sinais de áudio, codificador e decodificador de sinais de áudio BRPI0514650B1 (pt)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR122018077099-6A BR122018077099B1 (pt) 2004-08-25 2005-08-15 método para decodificação de sinal de áudio e decodificador de sinal de áudio
BR122018077089A BR122018077089B8 (pt) 2004-08-25 2005-08-15 decodificador de áudio

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US60483604P 2004-08-25 2004-08-25
US60/604,836 2004-08-25
PCT/US2005/029157 WO2006026161A2 (en) 2004-08-25 2005-08-15 Temporal envelope shaping for spatial audio coding using frequency domain wiener filtering

Publications (2)

Publication Number Publication Date
BRPI0514650A true BRPI0514650A (pt) 2008-06-24
BRPI0514650B1 BRPI0514650B1 (pt) 2019-09-24

Family

ID=35636849

Family Applications (3)

Application Number Title Priority Date Filing Date
BR122018077089A BR122018077089B8 (pt) 2004-08-25 2005-08-15 decodificador de áudio
BR122018077099-6A BR122018077099B1 (pt) 2004-08-25 2005-08-15 método para decodificação de sinal de áudio e decodificador de sinal de áudio
BRPI0514650-0A BRPI0514650B1 (pt) 2004-08-25 2005-08-15 Métodos para codificação e decodificação de sinais de áudio, codificador e decodificador de sinais de áudio

Family Applications Before (2)

Application Number Title Priority Date Filing Date
BR122018077089A BR122018077089B8 (pt) 2004-08-25 2005-08-15 decodificador de áudio
BR122018077099-6A BR122018077099B1 (pt) 2004-08-25 2005-08-15 método para decodificação de sinal de áudio e decodificador de sinal de áudio

Country Status (15)

Country Link
US (3) US8255211B2 (pt)
EP (4) EP1784818B1 (pt)
JP (2) JP5038138B2 (pt)
KR (3) KR101139880B1 (pt)
CN (3) CN101006494B (pt)
AU (2) AU2005280392B2 (pt)
BR (3) BR122018077089B8 (pt)
CA (1) CA2589623C (pt)
ES (3) ES2658824T3 (pt)
IL (3) IL181407A (pt)
MX (1) MX2007001948A (pt)
MY (2) MY151318A (pt)
PL (3) PL3940697T3 (pt)
TW (3) TWI498882B (pt)
WO (1) WO2006026161A2 (pt)

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TWI393120B (zh) 2013-04-11
US20080033731A1 (en) 2008-02-07
IL214135A0 (en) 2011-08-31
CN102270453B (zh) 2014-06-18
MY163042A (en) 2017-07-31
EP3279893A1 (en) 2018-02-07
CN102968996B (zh) 2015-06-10
TW201333933A (zh) 2013-08-16
IL181407A (en) 2011-10-31
KR101253699B1 (ko) 2013-04-12
CN101006494A (zh) 2007-07-25
WO2006026161A2 (en) 2006-03-09
TW201316327A (zh) 2013-04-16
EP3940697A1 (en) 2022-01-19
JP2008511040A (ja) 2008-04-10
AU2011200680C1 (en) 2013-03-14
US20080046253A1 (en) 2008-02-21
KR20120006077A (ko) 2012-01-17
AU2005280392B2 (en) 2011-02-24
ES2899286T3 (es) 2022-03-10
MY151318A (en) 2014-05-15
KR20110069179A (ko) 2011-06-22
KR20070051860A (ko) 2007-05-18
PL3279893T3 (pl) 2022-02-07
EP1784818B1 (en) 2017-11-15
IL181407A0 (en) 2007-07-04
CA2589623A1 (en) 2006-03-09
US8255211B2 (en) 2012-08-28
JP5292498B2 (ja) 2013-09-18
EP4036914A1 (en) 2022-08-03
MX2007001948A (es) 2007-04-23
US7945449B2 (en) 2011-05-17
TW200611240A (en) 2006-04-01
BR122018077089B1 (pt) 2020-11-10
EP1784818A2 (en) 2007-05-16
IL201469A0 (en) 2011-07-31
AU2005280392A1 (en) 2006-03-09
EP3940697B1 (en) 2022-06-22
JP5038138B2 (ja) 2012-10-03
IL214135A (en) 2015-10-29
CN102270453A (zh) 2011-12-07
EP4036914B1 (en) 2025-06-18
BR122018077099B1 (pt) 2020-11-10
US20080040103A1 (en) 2008-02-14
KR101139880B1 (ko) 2012-05-02
WO2006026161A3 (en) 2006-05-04
PL1784818T3 (pl) 2018-04-30
EP3279893B1 (en) 2021-09-22
TWI498882B (zh) 2015-09-01
CN102968996A (zh) 2013-03-13
IL201469A (en) 2012-07-31
PL3940697T3 (pl) 2022-08-22
ES2658824T3 (es) 2018-03-12
TWI497485B (zh) 2015-08-21
ES2923661T3 (es) 2022-09-29
BRPI0514650B1 (pt) 2019-09-24
CA2589623C (en) 2014-10-28
AU2011200680B2 (en) 2012-05-24
AU2011200680A1 (en) 2011-03-10
JP2012177939A (ja) 2012-09-13
BR122018077089B8 (pt) 2021-01-05
CN101006494B (zh) 2011-09-07

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