BRPI0906619A2 - métodos para codificar áudio de multicanal, para codificar um fluxo de áudio de multicanal de taxa de bit variável sem perda e para iniciar decodificação de um fluxo de bit de áudio de multicanal de taxa de bit variável, um ou mais meios legíveis por computador, um ou mais dispositivos semicondutores, e, decodificador de áudio de multicanal - Google Patents

métodos para codificar áudio de multicanal, para codificar um fluxo de áudio de multicanal de taxa de bit variável sem perda e para iniciar decodificação de um fluxo de bit de áudio de multicanal de taxa de bit variável, um ou mais meios legíveis por computador, um ou mais dispositivos semicondutores, e, decodificador de áudio de multicanal Download PDF

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Publication number
BRPI0906619A2
BRPI0906619A2 BRPI0906619A BRPI0906619A BRPI0906619A2 BR PI0906619 A2 BRPI0906619 A2 BR PI0906619A2 BR PI0906619 A BRPI0906619 A BR PI0906619A BR PI0906619 A BRPI0906619 A BR PI0906619A BR PI0906619 A2 BRPI0906619 A2 BR PI0906619A2
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BR
Brazil
Prior art keywords
multichannel audio
bit rate
variable bit
encoding
lossless
Prior art date
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BRPI0906619A
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English (en)
Inventor
Fejzo Zoran
Original Assignee
Dts Inc
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.)
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Publication date
Application filed by Dts Inc filed Critical Dts Inc
Publication of BRPI0906619A2 publication Critical patent/BRPI0906619A2/pt
Publication of BRPI0906619B1 publication Critical patent/BRPI0906619B1/pt

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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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching
    • 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)
  • 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)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

métodos para codificar áudio de multicanal, para decodificar um fluxo de áudio de multicanal de taxa de bit variável sem perda e para iniciar decodificação de um fluxo de bit de áudio de multicanal de taxa debit variável, um ou mais meios legíveis por computador,um ou mais dispositivos semicondutores, e, decodificador de áudio de multicanal um codec de áudio sem perda codifica/decodifica um fluxo de bits de taxa de bit variável (vbr) sem perda com capacidade de ponto de acesso aleatório (rap) para iniciar decodificação sem perda a um segmento especificado dentro de um quadro e/ou capacidade de múltiplos conjuntos de parâmetro de predição (mpps) dividido para diminuir efeitos transientes. isto é realizado com uma técnica de segmentação adaptável que fixa pontos de começo de segmento baseado em constrangimentos impostos pela existência de um rap desejado e/ou transiente detectado no quadro e seleciona uma duração ótima de segmento em cada quadro para reduzir carga útil de quadro codificado sujeito a um constrangimento de carga útil de segmento codificado rap e mpps são particularmente aplicáveis para melhorar desempenho global para durações de quadro mais longas.
BRPI0906619-5A 2008-01-30 2009-01-09 Métodos para codificar áudio de multicanal, para decodificar um fluxo de áudio de multicanal de taxa de bit variável sem perda e para iniciar decodificação de um fluxo de bit de áudio de multicanal de taxa de bit variável, um ou mais meios legíveis por computador, um ou mais dispositivos semicondutores, e, decodificador de áudio de multicanal BRPI0906619B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/011,899 US7930184B2 (en) 2004-08-04 2008-01-30 Multi-channel audio coding/decoding of random access points and transients
US12/011899 2008-01-30
PCT/US2009/000124 WO2009097076A1 (en) 2008-01-30 2009-01-09 Lossless multi-channel audio codec using adaptive segmentation with random access point (rap) and multiple prediction parameter set (mpps) capability

Publications (2)

Publication Number Publication Date
BRPI0906619A2 true BRPI0906619A2 (pt) 2019-10-01
BRPI0906619B1 BRPI0906619B1 (pt) 2022-05-10

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BRPI0906619-5A BRPI0906619B1 (pt) 2008-01-30 2009-01-09 Métodos para codificar áudio de multicanal, para decodificar um fluxo de áudio de multicanal de taxa de bit variável sem perda e para iniciar decodificação de um fluxo de bit de áudio de multicanal de taxa de bit variável, um ou mais meios legíveis por computador, um ou mais dispositivos semicondutores, e, decodificador de áudio de multicanal

Country Status (17)

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US (1) US7930184B2 (pt)
EP (2) EP3435375B1 (pt)
JP (1) JP5356413B2 (pt)
KR (1) KR101612969B1 (pt)
CN (1) CN101933009B (pt)
AU (1) AU2009209444B2 (pt)
BR (1) BRPI0906619B1 (pt)
CA (1) CA2711632C (pt)
ES (2) ES2700139T3 (pt)
HK (1) HK1147132A1 (pt)
IL (1) IL206785A (pt)
MX (1) MX2010007624A (pt)
NZ (2) NZ586566A (pt)
PL (2) PL2250572T3 (pt)
RU (1) RU2495502C2 (pt)
TW (1) TWI474316B (pt)
WO (1) WO2009097076A1 (pt)

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RU2010135724A (ru) 2012-03-10
CA2711632C (en) 2018-08-07
TW200935401A (en) 2009-08-16
US7930184B2 (en) 2011-04-19
CA2711632A1 (en) 2009-08-06
EP3435375B1 (en) 2020-03-11
AU2009209444A1 (en) 2009-08-06
EP2250572A4 (en) 2014-01-08
CN101933009B (zh) 2014-07-02
PL2250572T3 (pl) 2019-02-28
CN101933009A (zh) 2010-12-29
EP2250572A1 (en) 2010-11-17
AU2009209444B2 (en) 2014-03-27
JP5356413B2 (ja) 2013-12-04
JP2011516902A (ja) 2011-05-26
HK1147132A1 (en) 2011-07-29
BRPI0906619B1 (pt) 2022-05-10
ES2700139T3 (es) 2019-02-14
EP3435375A1 (en) 2019-01-30
ES2792116T3 (es) 2020-11-10
PL3435375T3 (pl) 2020-11-02
MX2010007624A (es) 2010-09-10
TWI474316B (zh) 2015-02-21
NZ586566A (en) 2012-08-31
EP2250572B1 (en) 2018-09-19
IL206785A0 (en) 2010-12-30
KR101612969B1 (ko) 2016-04-15
IL206785A (en) 2014-04-30
NZ597101A (en) 2012-09-28
KR20100106579A (ko) 2010-10-01
US20080215317A1 (en) 2008-09-04
WO2009097076A1 (en) 2009-08-06
RU2495502C2 (ru) 2013-10-10

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