BRPI0520729A2 - método para codificar sinais de áudio; codificador para codificar sinais de áudio; decodificador para decodificar sinais de áudio; sistema para compressão digital de áudio; produto programa de computador para codificar sinais de áudio; produto programa de computador; e produto programa de computador para decodificar fluxo contìnuo de bits - Google Patents

método para codificar sinais de áudio; codificador para codificar sinais de áudio; decodificador para decodificar sinais de áudio; sistema para compressão digital de áudio; produto programa de computador para codificar sinais de áudio; produto programa de computador; e produto programa de computador para decodificar fluxo contìnuo de bits

Info

Publication number
BRPI0520729A2
BRPI0520729A2 BRPI0520729-0A BRPI0520729A BRPI0520729A2 BR PI0520729 A2 BRPI0520729 A2 BR PI0520729A2 BR PI0520729 A BRPI0520729 A BR PI0520729A BR PI0520729 A2 BRPI0520729 A2 BR PI0520729A2
Authority
BR
Brazil
Prior art keywords
audio signals
computer program
program product
encoding
encoding audio
Prior art date
Application number
BRPI0520729-0A
Other languages
English (en)
Inventor
Mikko Tammi
Original Assignee
Nokia 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 Nokia Corp filed Critical Nokia Corp
Publication of BRPI0520729A2 publication Critical patent/BRPI0520729A2/pt
Publication of BRPI0520729A8 publication Critical patent/BRPI0520729A8/pt
Publication of BRPI0520729B1 publication Critical patent/BRPI0520729B1/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
    • G10L19/02—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
    • 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
    • G10L19/0204—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 using subband decomposition
    • G10L19/0208—Subband vocoders
    • 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
    • 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
    • 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)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

MéTODO PARA CODIFICAR SINAIS DE áUDIO; CODIFICADOR PARA CODIFICAR SINAIS DE áUDIO; DECODIFICADOR PARA DECODIFICAR SINAIS DE áUDIO; SISTEMA PARA COMPRESSãO DIGITAL DE áUDIO; PRODUTO PROGRAMA DE COMPUTADOR PARA CODIFICAR SINAIS DE áUDIO; PRODUTO PROGRAMA DE COMPUTADOR; E PRODUTO PROGRAMA DE COMPUTADOR PARA DECODIFICAR FLUXO CONTìNUO DE BITS. Trata-se da codificação e decodificação de áudio. A fim de melhorar os sinais de áudio codificados, é provido dividir o sinal de áudio em pelo menos uma banda de baixa freqúéncia e uma banda de alta freqúência, dividir a banda de alta frequência em pelo menos dois sinais de sub-banda de alta freqúência, e gerar parâmetros que referem-se pelo menos às seções de sinal de banda de baixa freqúência que casam melhor com os sinais de sub-banda de baixa freqúência.
BRPI0520729-0A 2005-11-04 2005-11-04 Método para a codificação e decodificação de sinais de áudio, codificador para codificação e decodificador para decodificar sinais de áudio e sistema para compressão de áudio digital. BRPI0520729B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2005/003293 WO2007052088A1 (en) 2005-11-04 2005-11-04 Audio compression

Publications (3)

Publication Number Publication Date
BRPI0520729A2 true BRPI0520729A2 (pt) 2009-05-26
BRPI0520729A8 BRPI0520729A8 (pt) 2016-03-22
BRPI0520729B1 BRPI0520729B1 (pt) 2019-04-02

Family

ID=35883664

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0520729-0A BRPI0520729B1 (pt) 2005-11-04 2005-11-04 Método para a codificação e decodificação de sinais de áudio, codificador para codificação e decodificador para decodificar sinais de áudio e sistema para compressão de áudio digital.

Country Status (8)

Country Link
US (1) US8326638B2 (pt)
EP (1) EP1943643B1 (pt)
JP (1) JP4950210B2 (pt)
KR (1) KR100958144B1 (pt)
CN (1) CN101297356B (pt)
AU (1) AU2005337961B2 (pt)
BR (1) BRPI0520729B1 (pt)
WO (1) WO2007052088A1 (pt)

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Also Published As

Publication number Publication date
EP1943643B1 (en) 2019-10-09
AU2005337961B2 (en) 2011-04-21
JP4950210B2 (ja) 2012-06-13
WO2007052088A1 (en) 2007-05-10
KR100958144B1 (ko) 2010-05-18
CN101297356A (zh) 2008-10-29
JP2009515212A (ja) 2009-04-09
US20090271204A1 (en) 2009-10-29
BRPI0520729A8 (pt) 2016-03-22
EP1943643A1 (en) 2008-07-16
CN101297356B (zh) 2011-11-09
US8326638B2 (en) 2012-12-04
BRPI0520729B1 (pt) 2019-04-02
KR20080059279A (ko) 2008-06-26
AU2005337961A1 (en) 2007-05-10

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B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11N Dismissal: publication cancelled [chapter 11.14 patent gazette]

Free format text: REFERENTE A RPI 2060 DE 29/06/2010.

B25A Requested transfer of rights approved

Owner name: NOKIA TECHNOLOGIES OY (FI)

B15K Others concerning applications: alteration of classification

Ipc: G10L 19/02 (2013.01), G10L 21/02 (2013.01)

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

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B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

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B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2853 DE 09-09-2025 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.