BRPI0409337A - método e dispositivo para sintetizar um sinal de áudio de saìda com base em um sinal de áudio de entrada, aparelho para fornecer um sinal de áudio de saìda, e, produto de programa de computador - Google Patents

método e dispositivo para sintetizar um sinal de áudio de saìda com base em um sinal de áudio de entrada, aparelho para fornecer um sinal de áudio de saìda, e, produto de programa de computador

Info

Publication number
BRPI0409337A
BRPI0409337A BRPI0409337-2A BRPI0409337A BRPI0409337A BR PI0409337 A BRPI0409337 A BR PI0409337A BR PI0409337 A BRPI0409337 A BR PI0409337A BR PI0409337 A BRPI0409337 A BR PI0409337A
Authority
BR
Brazil
Prior art keywords
audio signal
signal
output audio
input
transformed
Prior art date
Application number
BRPI0409337-2A
Other languages
English (en)
Inventor
Erik G P Schuijers
Marc W T Klein Middelink
Arnoldus W J Oomen
Leon M Van De Kerkhof
Original Assignee
Koninkl Philips Electronics Nv
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=33300979&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI0409337(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BRPI0409337A publication Critical patent/BRPI0409337A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03—Application of parametric coding in stereophonic audio systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

"MéTODO E DISPOSITIVO PARA SINTETIZAR UM SINAL DE áUDIO DE SAìDA COM BASE EM UM SINAL DE áUDIO DE ENTRADA, APARELHO PARA FORNECER UM SINAL DE áUDIO DE SAìDA, E, PRODUTO DE PROGRAMA DE COMPUTADOR". A síntese de um sinal de áudio de saída é provida com base em um sinal de áudio de entrada, o sinal de áudio de entrada compreendendo diversos sinais de sub-banda de entrada, onde pelo menos um sinal de sub-banda de entrada é transformado (T) do domínio de sub-banda para o domínio da freqüência, para obter pelo menos um sinal transformado respectivo, onde o pelo menos um sinal de sub-banda de entrada é retardado e transformado (D,T) para obter pelo menos um sinal retardado transformado respectivo, onde pelo menos dois sinais processados são derivados (P) do pelo menos um sinal transformado e do pelo menos um sinal retardado transformado, onde os sinais processados são submetidos a transformada inversa (T¬ -1¬) do domínio da freqüência para o domínio da sub-banda, para obter respectivos sinais de sub-banda processados, e onde o sinal de áudio de saída é sintetizado a partir dos sinais de sub-banda processados.
BRPI0409337-2A 2003-04-17 2004-04-14 método e dispositivo para sintetizar um sinal de áudio de saìda com base em um sinal de áudio de entrada, aparelho para fornecer um sinal de áudio de saìda, e, produto de programa de computador BRPI0409337A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP03076134 2003-04-17
EP03076166 2003-04-18
PCT/IB2004/050436 WO2004093495A1 (en) 2003-04-17 2004-04-14 Audio signal synthesis

Publications (1)

Publication Number Publication Date
BRPI0409337A true BRPI0409337A (pt) 2006-04-25

Family

ID=33300979

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0409337-2A BRPI0409337A (pt) 2003-04-17 2004-04-14 método e dispositivo para sintetizar um sinal de áudio de saìda com base em um sinal de áudio de entrada, aparelho para fornecer um sinal de áudio de saìda, e, produto de programa de computador

Country Status (12)

Country Link
US (1) US8311809B2 (pt)
EP (1) EP1618763B1 (pt)
JP (1) JP4834539B2 (pt)
KR (2) KR101200776B1 (pt)
CN (2) CN1774957A (pt)
AT (1) ATE355590T1 (pt)
BR (1) BRPI0409337A (pt)
DE (1) DE602004005020T2 (pt)
ES (1) ES2281795T3 (pt)
PL (1) PL1618763T3 (pt)
RU (1) RU2005135650A (pt)
WO (1) WO2004093495A1 (pt)

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Also Published As

Publication number Publication date
PL1618763T3 (pl) 2007-07-31
DE602004005020D1 (de) 2007-04-12
KR101169596B1 (ko) 2012-07-30
JP4834539B2 (ja) 2011-12-14
WO2004093495A1 (en) 2004-10-28
RU2005135650A (ru) 2006-03-20
US8311809B2 (en) 2012-11-13
DE602004005020T2 (de) 2007-10-31
CN1774956A (zh) 2006-05-17
EP1618763B1 (en) 2007-02-28
EP1618763A1 (en) 2006-01-25
CN1774957A (zh) 2006-05-17
KR101200776B1 (ko) 2012-11-13
CN1774956B (zh) 2011-10-05
ES2281795T3 (es) 2007-10-01
KR20050122267A (ko) 2005-12-28
JP2006523859A (ja) 2006-10-19
KR20110044281A (ko) 2011-04-28
US20070112559A1 (en) 2007-05-17
ATE355590T1 (de) 2006-03-15

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