BRPI0510270A - método e codificador para codificar um quadro em um sistema de comunicação, e, terminal - Google Patents

método e codificador para codificar um quadro em um sistema de comunicação, e, terminal

Info

Publication number
BRPI0510270A
BRPI0510270A BRPI0510270-7A BRPI0510270A BRPI0510270A BR PI0510270 A BRPI0510270 A BR PI0510270A BR PI0510270 A BRPI0510270 A BR PI0510270A BR PI0510270 A BRPI0510270 A BR PI0510270A
Authority
BR
Brazil
Prior art keywords
frame
encoding
parameters
encoder
communication system
Prior art date
Application number
BRPI0510270-7A
Other languages
English (en)
Inventor
Jari M Makinen
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 BRPI0510270A publication Critical patent/BRPI0510270A/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
    • G10L19/04—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
    • 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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

MéTODO E CODIFICADOR PARA CODIFICAR UM QUADRO EM UM SISTEMA DE COMUNICAçãO, E, TERMINAL Método para codificar um quadro no codificador de um sistema de comunicação, o método compreendendo os passos de: calcular o primeiro grupo de parâmetros associados com o quadro, onde o primeiro grupo de parâmetros compreende os parâmetros do banco de filtros; selecionar, no primeiro estágio, um de uma pluralidade de métodos de codificação baseado no primeiro grupo de parâmetros de um dos modos para codificação; calcular o segundo grupo de parâmetros associados com o quadro; selecionar, no segundo estágio, um de uma pluralidade de métodos de codificação baseado no resultado do primeiro estágio de seleção e no segundo grupo de parâmetros de um dos modos para codificação; e codificar o quadro usando o método de excitação de codificação selecionado do segundo estágio.
BRPI0510270-7A 2004-04-21 2005-04-19 método e codificador para codificar um quadro em um sistema de comunicação, e, terminal BRPI0510270A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0408856.3A GB0408856D0 (en) 2004-04-21 2004-04-21 Signal encoding
PCT/IB2005/001033 WO2005104095A1 (en) 2004-04-21 2005-04-19 Signal encoding

Publications (1)

Publication Number Publication Date
BRPI0510270A true BRPI0510270A (pt) 2007-10-30

Family

ID=32344124

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0510270-7A BRPI0510270A (pt) 2004-04-21 2005-04-19 método e codificador para codificar um quadro em um sistema de comunicação, e, terminal

Country Status (18)

Country Link
US (1) US8244525B2 (pt)
EP (1) EP1738355B1 (pt)
JP (1) JP2007534020A (pt)
KR (2) KR20080103113A (pt)
CN (1) CN1969319B (pt)
AT (1) ATE483230T1 (pt)
AU (1) AU2005236596A1 (pt)
BR (1) BRPI0510270A (pt)
CA (1) CA2562877A1 (pt)
DE (1) DE602005023848D1 (pt)
ES (1) ES2349554T3 (pt)
GB (1) GB0408856D0 (pt)
HK (1) HK1104369A1 (pt)
MX (1) MXPA06011957A (pt)
RU (1) RU2006139793A (pt)
TW (1) TWI275253B (pt)
WO (1) WO2005104095A1 (pt)
ZA (1) ZA200609627B (pt)

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Also Published As

Publication number Publication date
EP1738355A1 (en) 2007-01-03
KR20080103113A (ko) 2008-11-26
KR20070001276A (ko) 2007-01-03
EP1738355B1 (en) 2010-09-29
TW200605518A (en) 2006-02-01
TWI275253B (en) 2007-03-01
JP2007534020A (ja) 2007-11-22
ATE483230T1 (de) 2010-10-15
US8244525B2 (en) 2012-08-14
US20050240399A1 (en) 2005-10-27
CA2562877A1 (en) 2005-11-03
CN1969319B (zh) 2011-09-21
CN1969319A (zh) 2007-05-23
GB0408856D0 (en) 2004-05-26
WO2005104095A1 (en) 2005-11-03
HK1104369A1 (en) 2008-01-11
RU2006139793A (ru) 2008-05-27
AU2005236596A1 (en) 2005-11-03
ES2349554T3 (es) 2011-01-05
ZA200609627B (en) 2008-09-25
MXPA06011957A (es) 2006-12-15
DE602005023848D1 (de) 2010-11-11

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